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
Free · Calculators · Research
Mini Apps for founders
SaaS calculators, landing page tools, Reddit research, and more. 100% free.
Mini Apps
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
Free X Banger Meter
Free X banger meter. Paste your draft and get a 0–100 score plus feedback from published For You weights. No X login.
Score my draft →
Banger
78
/100
Tier Banger
Free AI X People Search
Free AI X people search. Type a plain-English ask (SaaS founders over 10k, indie hackers, marketers) and get public X profiles. No login.
Find people on X →
People
10
Matches
Floor 10k+
X Next Build: Ideas From Your Feed
Enter a public X handle. We read recent posts, invent two app ideas, cast a playful crew from people you already talk to, and hand you a copyable build prompt.
Find my build →
Ready
2
App ideas
Window 90d
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.
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
Free Screenshot Privacy Blur
Free screenshot privacy blur for founders. Upload a Stripe or dashboard screenshot — we redact emails, money amounts, phones, and invoice IDs in your browser. No upload to our servers.
Blur sensitive info →
On-device
Blur
Sensitive fields
Privacy Local only
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
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
SaaS SEO Checklist for Founders
Free SaaS SEO checklist for founders. Paste your site, get a Critical / Important / Recommended plan — including a per-page on-page scorecard and AI search track.
Build my SEO plan →
Interactive
8
Tracks
Focus Founders
SaaS SEO Agent Skills for Founders
Free SaaS SEO agent skills for founders. Paste your site and download a customized SKILL.md pack for Cursor, Claude Code, or ChatGPT — crawl, product-page, intent, authority, and AI visibility.
Build my skills pack →
Interactive
15
Skills
Focus Agents
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 Robots.txt Validator & Sitemap Checker
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
Free Bulk Domain Authority Checker
Free bulk Domain Authority checker. Paste up to ten domains for DA 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
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
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
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
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
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.
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 →Card
Preview
Share-ready Pass
All Social OG tools →