Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
How to Build a Smart Pill Dispenser App With Caregiver Alerts
A smart pill dispenser app lives or dies on one thing: what happens when a dose is missed. This guide covers the device link, the offline dose log, the escalation chain to a caregiver, and what it costs to build.
How to build · Nov 2, 2026 · 13 min read
Stream vs Sendbird vs PubNub: In-App Chat SDK for Startups
Pick Stream for most startups adding chat to a consumer or marketplace app, because the UI kits and docs get you to a working inbox fastest. Pick Sendbird when moderation and enterprise support matter, and PubNub when chat is one of several realtime features.
Technology · Nov 1, 2026 · 9 min read
How to Build a Mobile Dog Grooming Van Booking App
A mobile grooming app wins or loses on one feature: only offering appointment slots the van can actually reach. Build that, pet profiles and card-on-file payments first, and expect roughly $20,000 to $50,000 and ten to fourteen weeks for a custom first version.
How to build · Nov 1, 2026 · 9 min read
Maestro vs Detox vs Appium: Mobile E2E Testing for Startups
Pick Maestro for most early mobile apps because a non-engineer can write the flows and they run on any framework. Pick Detox for a React Native app with a test-minded team, and Appium only when you need real devices at scale or a language other than YAML.
Technology · Oct 31, 2026 · 10 min read
How to Build a Smart Litter Box App With Cat Health Alerts
A smart litter box app lives or dies on two things: reliable pairing with the box and alerts a cat owner trusts. Here is the stack, the costs, the timeline and what to build first.
How to build · Oct 31, 2026 · 10 min read
Twilio vs Telnyx vs Vonage: Which SMS and Voice API Fits
For most early products, pick Twilio for its docs, its libraries and Verify. Pick Telnyx when message volume or voice minutes make the bill matter. Vonage fits when you already have a sales relationship or need its specific carrier reach.
Technology · Oct 30, 2026 · 11 min read
Freelancer Not Delivering? When to Hire an Agency Instead
If your freelancer has missed two milestones in a row and cannot show you running software, start the exit now. Here is how to tell a bad month from a bad fit, what a handover costs and when staying put is the better call.
Cost & planning · Oct 30, 2026 · 11 min read
Superwall vs RevenueCat vs Adapty: Which Paywall Tool Fits
Superwall tests and presents paywalls, RevenueCat runs your entitlements and subscription data, and Adapty tries to do both. Here is how to pick one, or pair two, based on your stage and your revenue.
Technology · Oct 29, 2026 · 11 min read
Cloudinary vs Uploadthing vs Mux: Handling User Uploads
Pick Uploadthing for plain file uploads, Cloudinary for image-heavy products, and Mux the moment video is the product. Here is how the pricing, limits and tradeoffs actually play out.
Technology · Oct 29, 2026 · 11 min read
What It Costs to Add Subscriptions to an Existing App
Adding subscriptions to an app that is free or sells one-time purchases usually costs $15,000 to $40,000 for a single plan and up to $150,000 or more for multi-tier with web and team seats. Here is what drives the number and where the money gets wasted.
Cost & planning · Oct 29, 2026 · 13 min read
Apple Subscription Bundles and Suites: Should You Apply?
Apple will let you sell several subscriptions as one In-App Purchase, or one subscription across many apps. The rules are published, but pricing and revenue share are not. Here is how to decide whether to apply.
How to build · Oct 28, 2026 · 11 min read
Apple Multiseat Subscriptions Are On by Default: Check Yours
Since October 22, 2026, businesses and schools can buy your app subscription in bulk through Apple Business and Apple School Manager unless you opted out. Here is what that means for your pricing, your support load and your revenue reports.
Cost & planning · Oct 26, 2026 · 10 min read