You’ve validated your idea. You know there’s a market. You’re ready to build your SaaS product.
But here’s what nobody tells you: most SaaS products don’t fail because of bad code or weak market fit. They fail because founders build UX problems into the foundation before writing a single line of code.
I’ve spent eight years fixing products for companies like Deutsche Telekom, IQVIA and D.E. Shaw Group. The pattern is always the same: founders make preventable UX decisions early that cost them customers later.
One client’s trial conversion was stuck at 8%. We redesigned onboarding to get users to their first win in 90 seconds instead of walking them through features they didn’t care about yet. Conversion went to 22% in six weeks. Not from adding features. From fixing UX decisions that seemed fine when they were made.
This article covers the UX mistakes founders make before launch and what to do instead. If you’re about to build your first SaaS product, these lessons will save you months of confusion and thousands in lost revenue.
Mistake 1: Treating UX as polish you add later
The trap founders fall into
Most founders think UX happens after features are built. Focus on functionality first, then “make it pretty” before launch. This seems logical.
Here’s the problem: UX isn’t about making things pretty. It’s about making things usable. And usability decisions happen the moment you decide what features to build.
I watched a founder spend six months building a dashboard with 14 navigation options. When users finally saw it, they asked “which one do I click?” The problem wasn’t broken code. It was that UX decisions were made by default, not by design.
What to do instead
Start with UX decisions before you write code. This doesn’t mean hiring a designer or creating pixel-perfect mockups. It means answering these questions first:
What is the one thing users need to accomplish?
What’s preventing them from accomplishing it now?
What’s the fastest path from “I just signed up” to “I got value”?
What can we remove to make that path clearer?
The first-win framework:
Define your product’s “first win” — the moment when a user accomplishes something valuable for the first time. Everything in your MVP should exist to get users to that moment as fast as possible.
For a project management tool, the first win isn’t “user creates an account” or “user explores features.” It’s “user creates their first task and marks it complete.” That’s when they understand the value.
Once you know your first win, count the clicks it takes to get there from signup. If it’s more than five, you’re building UX debt. Every extra step, every piece of information you ask for, every feature you make them learn first — that’s friction you’re choosing to add.
Mistake 2: Assuming users will tell you what’s wrong
Why early feedback misleads you
Your first 10 users will be enthusiastic. They’ll say “this is great!” Then they stop using it.
Founders misinterpret early positive feedback as validation. But your first users — often friends, family or people who love trying new things — represent 2.5% of any market. They tolerate confusion because they enjoy figuring things out. When they say your product is “intuitive,” they mean “I eventually figured it out.” That’s not intuitive. That’s patience.
The dangerous part? These enthusiastic early users won’t tell you when something is confusing. They’ll struggle through it silently. By the time you realize there’s a problem, you’ve built three more features on top of the confusing foundation.
Focus on behavior, not words
Validation checklist for your first 10 users: Track actions, not testimonials:
Do they complete signup without asking for help?
Do they reach their first win without guidance?
Do they come back within 48 hours without a reminder?
Do they use it more than once before you follow up?
If the answer to any of these is “no,” you have a UX problem. The solution isn’t to explain your product better. It’s to fix the UX so explanation isn’t necessary.
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if(!window.MC) {
window.MC = {};
}
window.MC.smsPhoneData = {
defaultCountryCode: ‘US’,
programs: [],
smsProgramDataCountryNames: []
};
function getCountryUnicodeFlag(countryCode) {
return countryCode.toUpperCase().replace(/./g, (char) => String.fromCodePoint(char.charCodeAt(0) + 127397))
};
// HTML sanitization function to prevent XSS
function sanitizeHtml(str) {
if (typeof str !== ‘string’) return ”;
return str
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// URL sanitization function to prevent javascript: and data: URLs
function sanitizeUrl(url) {
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const trimmedUrl = url.trim().toLowerCase();
if (trimmedUrl.startsWith(‘javascript:’) || trimmedUrl.startsWith(‘data:’) || trimmedUrl.startsWith(‘vbscript:’)) {
return ‘#’;
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return url;
}
const getBrowserLanguage = () => {
if (!window?.navigator?.language?.split(‘-‘)[1]) {
return window?.navigator?.language?.toUpperCase();
}
return window?.navigator?.language?.split(‘-‘)[1];
};
function getDefaultCountryProgram(defaultCountryCode, smsProgramData) {
if (!smsProgramData || smsProgramData.length === 0) {
return null;
}
const browserLanguage = getBrowserLanguage();
if (browserLanguage) {
const foundProgram = smsProgramData.find(
(program) => program?.countryCode === browserLanguage,
);
if (foundProgram) {
return foundProgram;
}
}
if (defaultCountryCode) {
const foundProgram = smsProgramData.find(
(program) => program?.countryCode === defaultCountryCode,
);
if (foundProgram) {
return foundProgram;
}
}
return smsProgramData[0];
}
function updateSmsLegalText(countryCode, fieldName) {
if (!countryCode || !fieldName) {
return;
}
const programs = window?.MC?.smsPhoneData?.programs;
if (!programs || !Array.isArray(programs)) {
return;
}
const program = programs.find(program => program?.countryCode === countryCode);
if (!program || !program.requiredTemplate) {
return;
}
const legalTextElement = document.querySelector(‘#legal-text-‘ + fieldName);
if (!legalTextElement) {
return;
}
// Remove HTML tags and clean up the text
const divRegex = new RegExp(‘]*>’, ‘gi’);
const fullAnchorRegex = new RegExp(‘<a.*?', 'g');
const anchorRegex = new RegExp('(.*?)’);
const template = program.requiredTemplate.replace(divRegex, ”);
legalTextElement.textContent=””;
const parts = template.split(/(.*?)/g);
parts.forEach(function(part) {
if (!part) {
return;
}
const anchorMatch = part.match(/(.*?)/);
if (anchorMatch) {
const linkElement = document.createElement(‘a’);
linkElement.href = sanitizeUrl(anchorMatch[1]);
linkElement.target = sanitizeHtml(anchorMatch[2]);
linkElement.textContent = sanitizeHtml(anchorMatch[3]);
legalTextElement.appendChild(linkElement);
} else {
legalTextElement.appendChild(document.createTextNode(part));
}
});
}
function generateDropdownOptions(smsProgramData) {
if (!smsProgramData || smsProgramData.length === 0) {
return ”;
}
return smsProgramData.map(program => {
const flag = getCountryUnicodeFlag(program.countryCode);
const countryName = getCountryName(program.countryCode);
const callingCode = program.countryCallingCode || ”;
// Sanitize all values to prevent XSS
const sanitizedCountryCode = sanitizeHtml(program.countryCode || ”);
const sanitizedCountryName = sanitizeHtml(countryName || ”);
const sanitizedCallingCode = sanitizeHtml(callingCode || ”);
return ” + sanitizedCountryName + ‘ ‘ + sanitizedCallingCode + ”;
}).join(”);
}
function getCountryName(countryCode) {
if (window.MC?.smsPhoneData?.smsProgramDataCountryNames && Array.isArray(window.MC.smsPhoneData.smsProgramDataCountryNames)) {
for (let i = 0; i < window.MC.smsPhoneData.smsProgramDataCountryNames.length; i++) {
if (window.MC.smsPhoneData.smsProgramDataCountryNames[i].code === countryCode) {
return window.MC.smsPhoneData.smsProgramDataCountryNames[i].name;
}
}
}
return countryCode;
}
function getDefaultPlaceholder(countryCode) {
if (!countryCode || typeof countryCode !== 'string') {
return '+1 000 000 0000'; // Default US placeholder
}
var mockPlaceholders = [
{
countryCode: 'US',
placeholder: '+1 000 000 0000',
helpText: 'Include the US country code +1 before the phone number',
},
{
countryCode: 'GB',
placeholder: '+44 0000 000000',
helpText: 'Include the GB country code +44 before the phone number',
},
{
countryCode: 'CA',
placeholder: '+1 000 000 0000',
helpText: 'Include the CA country code +1 before the phone number',
},
{
countryCode: 'AU',
placeholder: '+61 000 000 000',
helpText: 'Include the AU country code +61 before the phone number',
},
{
countryCode: 'DE',
placeholder: '+49 000 0000000',
helpText: 'Fügen Sie vor der Telefonnummer die DE-Ländervorwahl +49 ein',
},
{
countryCode: 'FR',
placeholder: '+33 0 00 00 00 00',
helpText: 'Incluez le code pays FR +33 avant le numéro de téléphone',
},
{
countryCode: 'ES',
placeholder: '+34 000 000 000',
helpText: 'Incluya el código de país ES +34 antes del número de teléfono',
},
{
countryCode: 'NL',
placeholder: '+31 0 00000000',
helpText: 'Voeg de NL-landcode +31 toe vóór het telefoonnummer',
},
{
countryCode: 'BE',
placeholder: '+32 000 00 00 00',
helpText: 'Incluez le code pays BE +32 avant le numéro de téléphone',
},
{
countryCode: 'CH',
placeholder: '+41 00 000 00 00',
helpText: 'Fügen Sie vor der Telefonnummer die CH-Ländervorwahl +41 ein',
},
{
countryCode: 'AT',
placeholder: '+43 000 000 0000',
helpText: 'Fügen Sie vor der Telefonnummer die AT-Ländervorwahl +43 ein',
},
{
countryCode: 'IE',
placeholder: '+353 00 000 0000',
helpText: 'Include the IE country code +353 before the phone number',
},
{
countryCode: 'IT',
placeholder: '+39 000 000 0000',
helpText: 'Includere il prefisso internazionale IT +39 prima del numero di telefono',
},
];
const selectedPlaceholder = mockPlaceholders.find(function(item) {
return item && item.countryCode === countryCode;
});
return selectedPlaceholder ? selectedPlaceholder.placeholder : mockPlaceholders[0].placeholder;
}
function updatePlaceholder(countryCode, fieldName) {
if (!countryCode || !fieldName) {
return;
}
const phoneInput = document.querySelector('#mce-' + fieldName);
if (!phoneInput) {
return;
}
const placeholder = getDefaultPlaceholder(countryCode);
if (placeholder) {
phoneInput.placeholder = placeholder;
}
}
function updateCountryCodeInstruction(countryCode, fieldName) {
updatePlaceholder(countryCode, fieldName);
}
function getDefaultHelpText(countryCode) {
var mockPlaceholders = [
{
countryCode: 'US',
placeholder: '+1 000 000 0000',
helpText: 'Include the US country code +1 before the phone number',
},
{
countryCode: 'GB',
placeholder: '+44 0000 000000',
helpText: 'Include the GB country code +44 before the phone number',
},
{
countryCode: 'CA',
placeholder: '+1 000 000 0000',
helpText: 'Include the CA country code +1 before the phone number',
},
{
countryCode: 'AU',
placeholder: '+61 000 000 000',
helpText: 'Include the AU country code +61 before the phone number',
},
{
countryCode: 'DE',
placeholder: '+49 000 0000000',
helpText: 'Fügen Sie vor der Telefonnummer die DE-Ländervorwahl +49 ein',
},
{
countryCode: 'FR',
placeholder: '+33 0 00 00 00 00',
helpText: 'Incluez le code pays FR +33 avant le numéro de téléphone',
},
{
countryCode: 'ES',
placeholder: '+34 000 000 000',
helpText: 'Incluya el código de país ES +34 antes del número de teléfono',
},
{
countryCode: 'NL',
placeholder: '+31 0 00000000',
helpText: 'Voeg de NL-landcode +31 toe vóór het telefoonnummer',
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{
countryCode: 'BE',
placeholder: '+32 000 00 00 00',
helpText: 'Incluez le code pays BE +32 avant le numéro de téléphone',
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{
countryCode: 'CH',
placeholder: '+41 00 000 00 00',
helpText: 'Fügen Sie vor der Telefonnummer die CH-Ländervorwahl +41 ein',
},
{
countryCode: 'AT',
placeholder: '+43 000 000 0000',
helpText: 'Fügen Sie vor der Telefonnummer die AT-Ländervorwahl +43 ein',
},
{
countryCode: 'IE',
placeholder: '+353 00 000 0000',
helpText: 'Include the IE country code +353 before the phone number',
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{
countryCode: 'IT',
placeholder: '+39 000 000 0000',
helpText: 'Includere il prefisso internazionale IT +39 prima del numero di telefono',
},
];
if (!countryCode || typeof countryCode !== 'string') {
return mockPlaceholders[0].helpText;
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const selectedHelpText = mockPlaceholders.find(function(item) {
return item && item.countryCode === countryCode;
});
return selectedHelpText ? selectedHelpText.helpText : mockPlaceholders[0].helpText;
}
function setDefaultHelpText(countryCode) {
const helpTextSpan = document.querySelector('#help-text');
if (!helpTextSpan) {
return;
}
}
function updateHelpTextCountryCode(countryCode, fieldName) {
if (!countryCode || !fieldName) {
return;
}
setDefaultHelpText(countryCode);
}
function initializeSmsPhoneDropdown(fieldName) {
if (!fieldName || typeof fieldName !== 'string') {
return;
}
const dropdown = document.querySelector('#country-select-' + fieldName);
const displayFlag = document.querySelector('#flag-display-' + fieldName);
if (!dropdown || !displayFlag) {
return;
}
const smsPhoneData = window.MC?.smsPhoneData;
if (smsPhoneData && smsPhoneData.programs && Array.isArray(smsPhoneData.programs)) {
dropdown.innerHTML = generateDropdownOptions(smsPhoneData.programs);
}
const defaultProgram = getDefaultCountryProgram(smsPhoneData?.defaultCountryCode, smsPhoneData?.programs);
if (defaultProgram && defaultProgram.countryCode) {
dropdown.value = defaultProgram.countryCode;
const flagSpan = displayFlag?.querySelector('#flag-emoji-' + fieldName);
if (flagSpan) {
flagSpan.textContent = getCountryUnicodeFlag(defaultProgram.countryCode);
flagSpan.setAttribute('aria-label', sanitizeHtml(defaultProgram.countryCode) + ' flag');
}
updateSmsLegalText(defaultProgram.countryCode, fieldName);
updatePlaceholder(defaultProgram.countryCode, fieldName);
updateCountryCodeInstruction(defaultProgram.countryCode, fieldName);
}
var smsNotRequiredRemoveCountryCodeEnabled = true;
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var isRequired = smsField ? smsField.required : false;
var shouldAppendCountryCode = smsNotRequiredRemoveCountryCodeEnabled ? isRequired : true;
var phoneInput = document.querySelector('#mce-' + fieldName);
if (phoneInput && defaultProgram.countryCallingCode && shouldAppendCountryCode) {
phoneInput.value = defaultProgram.countryCallingCode;
}
displayFlag?.addEventListener('click', function(e) {
dropdown.focus();
});
dropdown?.addEventListener('change', function() {
const selectedCountry = this.value;
if (!selectedCountry || typeof selectedCountry !== 'string') {
return;
}
const flagSpan = displayFlag?.querySelector('#flag-emoji-' + fieldName);
if (flagSpan) {
flagSpan.textContent = getCountryUnicodeFlag(selectedCountry);
flagSpan.setAttribute('aria-label', sanitizeHtml(selectedCountry) + ' flag');
}
const selectedProgram = window.MC?.smsPhoneData?.programs.find(function(program) {
return program && program.countryCode === selectedCountry;
});
var smsNotRequiredRemoveCountryCodeEnabled = true;
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Pitch","helper_text":"","type":"text","required":false,"audience_field_name":"Contributor Pitch","enabled":false,"order":null,"field_type":"merge","merge_id":5}}).find(function(f) { return f.name === fieldName && f.type === 'smsphone'; });
var isRequired = smsField ? smsField.required : false;
var shouldAppendCountryCode = smsNotRequiredRemoveCountryCodeEnabled ? isRequired : true;
var phoneInput = document.querySelector('#mce-' + fieldName);
if (phoneInput && selectedProgram.countryCallingCode && shouldAppendCountryCode) {
phoneInput.value = selectedProgram.countryCallingCode;
}
updateSmsLegalText(selectedCountry, fieldName);
updatePlaceholder(selectedCountry, fieldName);
updateCountryCodeInstruction(selectedCountry, fieldName);
});
}
document.addEventListener('DOMContentLoaded', function() {
const smsPhoneFields = document.querySelectorAll('[id^="country-select-"]');
smsPhoneFields.forEach(function(dropdown) {
const fieldName = dropdown?.id.replace('country-select-', '');
initializeSmsPhoneDropdown(fieldName);
});
});
Mistake 3: Copying what successful products do
The Stripe trap
Founders love studying successful products. Stripe has elegant onboarding, so you copy their flow. Notion has powerful features, so you build similar complexity.
The problem? You’re a startup with 100 users. They’re established companies with millions. Stripe can afford subtle onboarding because their brand is already trusted. Notion can get away with complexity because users invest time learning powerful tools. Your MVP doesn’t have that luxury.
Copying successful products means getting answers without understanding the math. Worse, you copy solutions to problems you don’t have yet.
Build for your actual stage
Your product at 100 users needs different UX than products at 100,000 users. Early-stage UX should be obvious, not clever. Clear, not innovative. Fast to value, not feature-complete.
Early-Stage UX principles: Until you hit 1,000 active users:
Obvious beats clever: Use “Export,” not “Actions.”
Show, don’t hide: If it’s important, make it visible.
One path, not many: Pick the best way and make it obvious.
Explain outcomes, not features: Describe what users will accomplish.
A founder once told me “but this is how Notion does it.” I asked “How many users does Notion have?” He said “millions.” I said “How many do you have?” He said “47.” That’s why you’re not Notion. Yet.
Mistake 4: Thinking you need a designer first
The hiring trap
Founders believe they need to hire a designer before they can fix UX. But hiring the wrong designer at the wrong time converts money into pretty interfaces with the same underlying problems.
I’ve watched founders spend $15,000 on redesigns that improved visual design while conversion stayed flat. Why? Because the designer made it prettier without questioning whether the flow made sense. Most designers optimize what you give them, not whether you should be building it at all.
What to fix before hiring anyone
Most UX problems don’t require design skills. They require clear thinking about what users actually need.
Problems you can fix right now (No designer needed):
Buried features: If users keep asking support how to do something, make it more visible. Move it from a dropdown to the main screen.
Information overload: If your dashboard shows 47 metrics, pick three users check most often. Hide everything else.
Feature tour onboarding: Delete slideshow tours. Replace with one action: “Create your first [thing].” Guide them through it.
Confusing labels: Stop using internal jargon. “Projects” is better than “Workspaces” if everyone calls them projects.
Unnecessary confirmations: If you’re asking “are you sure?” on non-destructive actions, remove it.
The triage framework: Before hiring a designer, fix these issues yourself:
Identify 10-15 UX problems in your product. Rank each by two factors:
Impact on users (high, medium, low)
Speed to fix (fast, medium, slow)
Fix anything that’s high impact and fast to fix first. These are often simple changes (better labels, visible buttons, clearer paths) that require no design expertise.
Most founders discover they can solve 70% of UX problems without hiring anyone. The remaining 30%? That’s when you bring in a designer. But now you’re asking them to enhance something that already works, not fix something fundamentally broken.
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Mistake 5: Not measuring what actually matters
The vanity metrics problem
Founders track signups, downloads, page views. Numbers go up. Investors like them. But none of them tell you if your UX works.
I’ve seen products with 10,000 signups and 94% abandonment. The signup flow worked great. The product itself was impossible to use. The problem? Signup metrics measure your marketing, not your product. Your landing page convinces people to try. But if they can’t figure out how to use it in 90 seconds, they leave.
Track these instead
The only metrics that reveal UX problems:
Day 1 activation rate: What percentage of signups complete your “first win” on day one? Below 40% means broken onboarding.
Time to first win: How long from signup to completing that first valuable action? More than five minutes means you’re losing people.
D7 retention: What percentage of day-one users are still using your product on day seven? Below 30% means the value isn’t sticking.
Support question patterns: What questions does support answer most often? The same “how do I…” question 20+ times per week is a UX problem disguised as a support issue.
The 40/5/30 Benchmark:
Aim for:
40% activation on day one (users completing first win)
5 minutes or less to reach that first win
30% still using the product one week later
If you’re hitting these numbers with your first 50 users, your UX foundation is solid. If not, don’t build more features. Fix what’s preventing users from getting value from what you’ve already built.
What this means for your first SaaS
Building your first SaaS product is overwhelming. It’s tempting to skip UX and just start coding.
But preventing UX problems is faster and cheaper than fixing them later. Every early UX decision compounds. The export button you bury today becomes 450 support tickets per month. The confusing onboarding you ship this week becomes 92% trial abandonment next quarter.
The good news? Most UX problems are simple to prevent. You don’t need design expertise or a big budget. You need clear thinking about what users are trying to accomplish and what’s standing in their way.
Start with these questions:
What is the one thing users need to accomplish?
How fast can they accomplish it after signup?
Are early users coming back without reminders?
What questions are they asking repeatedly?
Answer these honestly before you build more features. Your users won’t tell you what’s confusing. They’ll just leave. Make it obvious. Make it fast. Make it valuable within 90 seconds. Everything else can wait.
Image by pressfoto on Freepik
The post What Founders Need to Know About Product UX Before Building Their First SaaS appeared first on StartupNation.
