Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
Best Auth for a Mobile App: Clerk, Supabase Auth or Firebase
For most mobile apps in 2026, Firebase Authentication is the safest pick, with Supabase Auth ahead when your data already lives in Postgres. Here is how Clerk, Supabase Auth and Firebase compare on the things that bite on a phone.
Technology · Nov 6, 2026 · 12 min read
How to Build a Mobile Notary Booking App With Remote Notarization
A mobile notary app starts with travel-aware booking, fee quotes and a clean order flow for signing agents. Add remote online notarization by plugging in a licensed provider instead of building the video notary stack yourself.
How to build · Nov 6, 2026 · 12 min read
Replit App Not Working? When to Hire a Developer to Fix It
Most broken Replit apps need a rollback or a clearer request, not a developer. A few need one this week. Here is how to tell which you have, and what the market charges.
Cost & planning · Nov 5, 2026 · 13 min read
Qwik Alternatives: SvelteKit, SolidStart or React Router 7
Looking for Qwik alternatives in 2026? Here is how SvelteKit, SolidStart and React Router 7 compare on maturity, hiring and real performance, and which one fits which kind of product.
Technology · Nov 5, 2026 · 10 min read
How to Build an App With ChatGPT (and Where It Stops)
ChatGPT and Codex can get you a working prototype of a simple app for roughly $20 a month. This guide walks the steps, the real costs, and the point where a founder should stop and hand it to a team.
How to build · Nov 5, 2026 · 11 min read
Bolt.new App Not Working? When to Hire a Developer to Fix It
Most broken Bolt apps need a clearer prompt or a rollback, not a developer. A few need one this week. Here is how to tell which you have, and what the market charges.
Cost & planning · Nov 4, 2026 · 12 min read
Hono Alternatives: NestJS, AdonisJS or Encore for Your API
Hono is a great router, but a startup API often needs more structure than a router gives you. Here is how NestJS, AdonisJS and Encore.ts compare, and which one fits which product.
Technology · Nov 4, 2026 · 9 min read
App Like Airbnb: What It Takes to Build One
An app like Airbnb costs roughly $80K to $150K for a focused first version and $250K to $500K for a full platform. Here is the stack, the timeline, and the order to build the hard parts in.
How to build · Nov 4, 2026 · 12 min read
Lovable App Breaking? When to Hire a Developer to Fix It
Most Lovable apps do not need a developer yet, and a few need one today. Here is how to tell which one you have, what a rescue involves, and what the market charges.
Cost & planning · Nov 3, 2026 · 12 min read
Prisma Accelerate Is Retiring: Prisma Postgres, Neon or Direct
Prisma Accelerate shuts down on December 1, 2026, and the managed pooling and query caching go with it. Here is what to switch to, what it costs and what to do each week until then.
Technology · Nov 3, 2026 · 10 min read
How to Build a Digital Legacy Vault App for Family Asset Transfer
A digital vault app holds the documents, accounts, passwords and letters a family needs after someone dies, and releases them to the right people at the right time. This guide covers the encryption, key custody, release logic and compliance decisions that make or break the product.
How to build · Nov 3, 2026 · 12 min read
Nylas vs Cronofy vs Google Calendar API: Which Fits Your App
Use the Google Calendar API directly if your users all live in Google Workspace. Pick Nylas when you need Google, Microsoft and email in one integration, and Cronofy when scheduling is the product and you sell to larger teams.
Technology · Nov 2, 2026 · 10 min read