Built with Claude Code
vibe100
100 daily-use apps. Built solo with Claude Code.
An open study on how AI tools change the way software gets made. Every app is real, deployed, and its own design.
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The four picks that earn the most from a real test drive
AI Startup Analyst
Multi-turn AI analyst · cited briefs · graded eval.
PR Reviewer
AI PR reviewer · finds anchor to changed lines only.
Appointment Picker
Cal.com-class booker · AI prep brief · smart reschedule.
Resume Tailor
Résumé tailored to the JD · ATS check · no fabrication.
Tier 1 · Trivial utilities
20 / 20Single-purpose tools — calculators, converters, generators. Built to find the quality bar: 'working' isn't enough, 'a real person would trust this' is. Tier 1 became where the design system, the test-before-UI habit, and the bespoke-per-app palette discipline were forged.
Tip Calculator
#001Tip, tax, and round-up split — any currency.
BMI Calculator
#002BMI with healthy weight range in your unit.
Mortgage Calculator
#003Full PITI mortgage + amortization chart.
Currency Converter
#00460+ currencies, locale-aware, multi-watch.
Unit Converter
#0058 categories of units with proper temperature math.
Timezone Converter
#006All 418 IANA zones · meeting-time scrubber.
Color Converter
#007Hex/RGB/HSL · palettes · WCAG contrast.
Password Generator
#008Crypto-strong passwords + EFF passphrases.
Word Counter
#014Words · platform limits · keyword density.
JSON Workbench
#016Format · tree · diff · repair · TS interface emit.
Base64 Encoder
#017UTF-8 safe · URL-safe variant · emoji round-trip.
Regex Tester
#018Live highlight · captures · replace · pattern library.
Date Calculator
#019Age + birthday calculator · zodiac · milestones.
Slug Generator
#020Unicode-safe slugs · NFKD normalization.
Tier 2 · Persistence + state
20 / 20Apps that remember things. Every one ships its own layout archetype — corkboard, heatmap, calendar grid, kanban, timeline — not 20 list views. The discipline of 'one app, one shape that fits the domain' was the Tier-2 lesson.
Mood Journal
#025Calendar grid · 5-mood scale · monthly average.
Gratitude Log
#026Timeline log · grouped by day · streak counter.
Savings Goals
#030Multi-goal · progress rings · on-track likelihood.
Compound Interest
#031Compound interest with contributions.
Bookmark Manager
#037Folder tree · favicons · tags · grid/list.
Poll Creator
#039Build → vote → share-link round-trip.
Flashcards
#040Decks · study mode with know/again re-queue.
Tier 3 · Forms + exports
20 / 20Trusted business artifacts. Invoices, receipts, résumés, scheduling, quoting, landing pages — apps that produce something a user signs their name to. Every one gets a bespoke design system so they don't look like clones, and every money/calendar calculation is verified before the UI is rendered.
Invoice Generator
#041Invoices with reusable client + items + footer blocks.
Meeting Agenda
#045Meeting agenda console · templates · action items.
Lead Capture
#046Embeddable lead form · per-form CTA color.
Survey Builder
#047Multi-question survey builder with central store.
Guestlist Manager
#050Door-management surface · deep-green admitted.
Appointment Picker
#052Cal.com-class booker · AI prep brief · smart reschedule.
Time Tracker
#053Harvest-grade time-tracker · invoice → /i/ link.
Budget Estimator
#054Itemized project quote · contingency · margin gauge.
Pricing Page Builder
#056AI generates pricing tiers · publish + embed.
Landing Page Generator
#057AI drafts a full landing page as typed blocks.
Newsletter Signup
#058Hosted signup form · owner-key dashboard.
Testimonial Wall
#059'Wall of love' from testimonials · grid/masonry/carousel.
Changelog Page
#060Public changelog · Markdown · RSS · HTML export.
Tier 4 · Dashboards + CRUD
15 / 15Contract-first apps. Each one starts from a per-app CLAUDE.md that names the entities, invariants, out-of-scope items, and failure modes — the contract is the prompt. The verifier turns every invariant into a Node assertion that runs before the build. Caught seven design bugs at zero UI cost.
Lightweight CRM
#061Lightweight CRM · contacts · accounts · deals.
Sales Pipeline
#062Sales pipeline · weighted forecast per currency.
Inventory
#064Inventory journal · FIFO valuation · transfers.
POS Register
#065POS register · multi-tender · shift reconciliation.
Subscription Tracker
#066Subscription tracker · next-renewal math correct.
Bill Reminder
#067Bills calendar · late-fee accrual · status precedence.
Finance Dashboard
#068Personal finance · accounts · transfers · budgets.
Stock Portfolio
#069Tax-aware portfolio · FIFO realized · per-account.
AI Startup Analyst
#075Multi-turn AI analyst · cited briefs · graded eval.
Tier 5 · AI-powered
15 / 15AI proposes, code decides. Every app pairs the model with a deterministic guard — citation grounding, read-only SQL validation, diff-line anchoring, glossary enforcement, deliverability scoring. The guard is the moat: anyone can copy the prompt; nobody can copy the eval that rejects bad output.
Reply Composer
#079Email reply composer · voice profile · refine loop.
Meeting Summarizer
#080Meeting summarizer · forced-tool minutes schema.
NL to SQL
#082Natural language → SQL · read-only validator beats 25-attack battery.
Support Widget
#083Support widget builder · paste docs → published page.
Campaign Planner
#084Campaign planner · date × channel grid · mix-balance guard.
SEO Meta Generator
#086AI SEO meta · title/desc length-checked · JSON-LD valid.
Listing Builder
#087Vision listing builder · Amazon / Etsy / Shopify / eBay.
Outreach Sequencer
#088Outreach sequencer · deliverability + personalization guards.
FAQ from Docs
#089FAQ extraction from docs · synonym-aware merging.
Tier 6 · Multi-system + agentic
10 / 10Platforms, not features. Helpdesk, marketplace, LMS, forum, job board, crowdfunding, agentic workflow builder, admin-panel generator. Multi-turn tool composition with forced terminators, validated DAGs, and human-in-the-loop on every irreversible action — agents that earn the autonomy they're given.
Helpdesk
#091AI helpdesk · ticket routing · grounded reply suggestions.
Booking Platform
#092Multi-resource booking platform · availability + holds.
Storefront
#093Storefront · catalog · cart · checkout · orders.
Marketplace
#094Two-sided marketplace · listings · messaging · payouts.
Mini LMS
#095Mini LMS · courses · lessons · quizzes · progress.
Forum
#096Reddit-style forum · threads · votes · moderation queue.
Job Board
#097Job board · employer posts · applicant tracking.
Crowdfunding
#098Crowdfunding · campaigns · pledges · stretch goals.
Workflow Builder
#099Agentic workflow builder · validated DAG · tool nodes.
Admin Panel Builder
#100Generate a CRUD admin panel from a schema.