Free Mini Apps for Founders

Landing page tools

Free Website Grader

Free Lighthouse website grader. Instant score across speed, SEO, best practices and accessibility, with PageSpeed recommendations.
Analyze →

Scored
90/100

Overall score

Grade A
Competitor Landing Page Analyzer

Paste a competitor's URL, add yours, and see title, meta, schema, social tags and stack side by side — so you know exactly what to fix.
Compare pages →

Compared
8/12

Checks you trail

Verdict Catch up
Clone Competitor Page

Free clone competitor tool. Paste a competitor URL, copy their public website HTML, and remix the structure in Cursor or Claude with your brand. Free signup required.
Clone page →

Captured
Raw HTML

Clone

Mode Raw HTML

All Landing page tools →

SEO tools

SaaS SEO Checklist for Founders

Free SaaS SEO checklist for founders. Pick your launch stage, tick crawl/product/authority tasks, and download an AI agent brief. Not a generic 20-skill dump.
Build my SEO plan →

Interactive
6

Tracks

Focus Founders
JavaScript SEO Checker

Free SPA shell checker. Paste your website to see if crawlers get real HTML or an empty JavaScript shell. No signup.
Check my site →

Checked
SPA

Verdict

Crawlable Fail
Free Sitemap & Robots.txt Validator

Free sitemap and robots.txt validator. Checks both files exist, the sitemap is well-formed, and robots.txt isn't silently blocking your own pages. No signup.
Validate →

Checked
5/7

Checks passed

Status Fix conflicts
Free XML Sitemap Generator

Free XML sitemap generator. Paste a domain, we discover public URLs, and you download sitemap.xml to host at the root. No signup.
Generate sitemap →

Generated
24

URLs in sitemap

Status Ready to host
Free llms.txt Generator

Free llms.txt generator. Paste a URL and download llms.txt, llms-full.txt, and llms-developers.txt for AI crawlers. No signup.
Generate llms.txt →

Generated
3

Files generated

Status Ready to host

All SEO tools →

Backlink tools

Free Bulk Domain Authority Checker

Free bulk Domain Authority checker. Paste up to ten domains for DA, Page Authority, Spam Score and linking root domains. Free signup required.
Check Domain Authority →

Checked
72

Domain Authority

Scale 0–100
Free Backlink Checker

Free backlink checker. Paste one domain for Domain Rating, referring domains, backlinks and spam score. Free signup required.
Check backlinks →

Checked
72

Domain Rating

Authority Strong
Free Broken Link Checker

Free broken link checker. Paste a page and we check every link on it for 4xx, 5xx, timeouts and redirects. No signup.
Check links →

Checked
3

Broken links found

Health Needs fixes

All Backlink tools →

Social OG tools

Social Preview Checker

Free Open Graph / social preview checker. Paste a URL to see the og:title, og:description and og:image it will render as a share card on X, LinkedIn, Slack and iMessage. No signup.
Check my link →

Checked
Card

Preview

Share-ready Pass

All Social OG tools →

Reddit tools

Subreddit Finder

Paste a product idea and get public subreddits where people already discuss the problem — sized for idea validation, not spam.
Find subreddits →

Matched
12

Subreddits matched

Best for Validation
Subreddit Stats

Enter a subreddit to see member stats, how strict mods tend to be for founder posts, estimated weekly visitors, and similar communities.
Analyze subreddit →

Matched
10

Similar communities

Best for Research
Share of Voice Tool

Free Reddit share of voice. Enter your site to see mention volume and top subreddits, or add up to 3 competitors for share and gaps. Free signup required.
Compare on Reddit →

Compared
42%

Your share of voice

Vs rivals Leading
Reddit Best Time to Post Calculator

Free Reddit best-time-to-post calculator. Enter a subreddit for an estimated day/hour heatmap of when engagement is likely highest. No signup.
Get best times →

Estimated
Tue 3 PM

Top window (UTC)

Confidence Estimate
Reddit Comment Sentiment Checker

Free Reddit comment sentiment checker. Paste a thread URL to see positive vs negative sentiment, common objections, and top quotes. No signup.
Check sentiment →

Analyzed
62%

Positive sentiment

Mood Mostly positive

All Reddit tools →

X tools

X Algorithm Checker

Free X algorithm scan. Sign up, enter a public handle, and we score the last 14 days of original posts against open For You weights via Launch Llama HQ.
Scan my account →

Scanned
110

Points a post

Mix Replies
X Recap: Your Activity in Story Cards

Type a public X username. Launch Llama reads recent posts and turns them into cards: top mutuals, biggest fan, X personality, prime time, and more.
Make my recap →

Ready
10

Story cards

Format 9:16
X Circle: Who You Talk With Most

Type a public username. We score who they reply to and who replies to them, then draw them in rings around the profile photo.
Make my circle →

Drawn
50

People in rings

Core Mutuals
X Tier List: Wholesome Interaction Ranks

Type a public username. We score who they reply to and who replies to them (same as X Circle), then draw a shareable S–D tier list. Every row is positive.
Make my tier list →

Sorted
S–D

Wholesome tiers

S tier Ride or Die
X Time Machine: One Year Ago Today

Type a public username. We go back exactly one year and bring back the post that account wrote on this day, ready to share.
Go back one year →

Found
365

Days back

Mode Exact

All X tools →

Utilities

Column to Comma Separated List

Free column to comma converter. Paste Excel or Sheets rows and get a delimited list with optional quotes and wrappers. Runs in your browser.
Copy list →

Converted
a, b, c

Delimited list

Format CSV
Fake MRR Chart Generator

Free fake MRR chart generator. Pick start and target MRR, choose a growth curve, style the chart, and download a PNG. Runs in your browser. Synthetic data only.
Download PNG →

Synthetic
$39.2k

Mock MRR

Data Fake
Free HTML Viewer

Free online HTML viewer. Paste HTML, CSS, and JavaScript and see it render instantly in a live sandboxed preview. Runs in your browser.
View HTML →

Rendered
Live

Rendered preview

Output Live
Free Business Name Generator

Free AI business name generator. Describe your idea, filter by style or keyword, and save names you like. Free signup required.
Generate names →

Generated
Nexora

Brandable name

Fit Strong

All Utilities →

Launch planner

Best Day to Launch on Product Hunt

Free Product Hunt best-day guide. See weekday heuristics, category windows, platform timing tips, and a launch countdown checklist. No signup.
View launch windows →

Heuristic
Wed

Best weekday

Focus Timing
Product Hunt Launch Checklist

Free Product Hunt launch checklist. Tick T-30 through T+1 tasks, self-check your page, and track a readiness score in your browser. No signup.
Build my checklist →

Interactive
72

Readiness

Phases 6
Free Product Hunt Launch Planner

Free Product Hunt launch planner. Set your launch date, get a dated task list, and track progress in your browser. No signup.
Build my plan →

Planner
T-7

Next milestone

Span 2 weeks
Free Uneed Launch Planner

Free Uneed launch planner for founders. Set your launch date, get a dated action plan, and track progress in your browser. No signup.
Build my Uneed plan →

Planner
T-5

Outreach ready

Span 2 weeks

All Launch planner →

Launch helpers

Startup Tagline Generator

Free startup tagline generator. Describe your product, pick a style, and copy 10 taglines. No signup required.
Generate 10 taglines →

Instant
10

Taglines

Copy 1 click
Product Description Generator

Free AI-style product description generator. Fill in a few details and get headline, one-liner, and body copy for directories and landing pages. No signup.
Generate description →

Ready
3

Copy blocks

Paste Anywhere
Product Hunt Launch Post Copy Generator

Free Product Hunt launch post copy generator. Get tagline, first comment, short and long descriptions, and topic ideas. No signup.
Generate launch copy →

PH-ready
5

Sections

Paste PH
Free AI Cold DM Generator

Free AI-style cold DM generator for launch outreach. Get PH hunter, X/Twitter, and user email templates with placeholders. No signup.
Generate 3 outreach messages →

Outreach
3

Templates

Tone Human

All Launch helpers →

SaaS calculators

Burn Rate Calculator

How long your cash lasts at the current burn, and the month it runs out — the date every other decision gets scheduled against.
Calculate runway →

Calculated
9 months, 1 week

Runway

Position Tight
CAC Calculator

What it actually costs to win one customer. The input that lifetime value, payback and every paid channel decision depend on.
Calculate CAC →

Calculated
$500

Customer acquisition cost

Marketing spend $30,000 · Sales spend $20,000
LTV Calculator

Whether a customer earns back what they cost, and how long that takes. CAC on its own cannot tell you either.
Calculate LTV:CAC →

Calculated
3.2 : 1

LTV to CAC ratio

Signal Healthy
Churn Rate Calculator

How fast customers leave and what that does to average lifetime. Small churn improvements move lifetime value more than price changes do.
Calculate churn →

Calculated
3.0%

Monthly churn rate

Signal Healthy
MRR Calculator

Where recurring revenue lands if the current growth rate holds — compounded month by month rather than added up.
Project MRR →

Calculated
$31,384

MRR in 12 months

Current MRR $10,000 · Monthly growth rate 10%
SaaS Valuation Calculator

A defensible ARR-multiple range driven by growth and margin. Useful before a conversation about price, not instead of one.
Estimate valuation →

Calculated
$9,706,667 – $18,026,667

Estimated valuation

Annual recurring revenue $1,000,000 · Year-on-year growth 100%
TAM SAM SOM Calculator

Market size built from customers and price rather than a slice of an analyst report, so every input is one you can defend.
Calculate market size →

Calculated
$60,000,000

Total addressable market

Potential customers worldwide 50,000 · Annual price per customer $1,200
Startup Equity Calculator

What you still own once a priced round closes, what the investors take, and what the option pool quietly costs you.
Calculate dilution →

Calculated
48.00%

Your ownership after the round

Your ownership now 60% · Pre-money valuation $8,000,000

All SaaS calculators →

Sponsorship calculators

Marketing ROI Calculator

What each customer from sponsorships costs, what they are worth, and whether the placements are worth buying again.
Calculate sponsorship LTV:CAC →

Calculated
3.2 : 1

LTV to CAC ratio

Signal Healthy
CPM Calculator

Turn a newsletter advertising quote into effective CPM and CPC so you can compare placements before you buy.
Calculate sponsorship rates →

Calculated
$156

Effective CPM (opens)

Signal Expensive

All Sponsorship calculators →

Frequently asked questions

How do I check domain authority for free?

Paste up to ten public domains into the bulk Domain Authority checker for a Moz-style DA score with no signup. DA is a 1–100 link-profile score, not a Google ranking factor.

Is there a free backlink checker?

Yes. Paste one URL into the backlink checker to see referring domains and anchors. Same job as “how to check backlinks.” It is a founder snapshot, not a full Ahrefs crawl.

Where can I find a free business name generator?

Use the business name generator on this page. It runs in the browser with no account. Trademark and domain checks are a separate step after you pick names.

What is TAM, SAM, and SOM?

TAM is total addressable market, SAM is the slice you can serve, SOM is the share you can win. The TAM SAM SOM calculator turns a market story into pitch numbers.

How do I calculate customer acquisition cost (CAC)?

Divide sales and marketing spend by new customers in the same period. The CAC calculator does that in the browser. Pair it with the LTV:CAC calculator; most B2B SaaS teams aim for about 3:1.

How do I calculate SaaS churn?

Logo churn is customers lost divided by starting customers. Revenue churn uses MRR. Use the churn calculator and pick the definition your board wants.

What is the best time to post on Reddit?

It depends on the subreddit. Enter a community in the Reddit best-time Mini App for a day/hour window from public posts. To find communities first, paste your product idea into the subreddit finder.

What is the X (Twitter) algorithm?

X published open For You ranking weights (people also search “Twitter algorithm”). The algorithm scan scores the last 14 days of public original posts against those weights. Recap and Circle give analytics on a public handle with no X login.

How do you calculate startup runway?

Cash divided by monthly net burn, in months. Use the runway calculator. For SaaS metrics more broadly, start with CAC, LTV:CAC, churn, MRR growth, and runway, each as its own Mini App.

Directory and newsletter tools

Directory submission tracker
610+ startup directories sorted by DR, with saved progress.
Newsletters that accept sponsors
300+ newsletters filtered by topic and audience.