Do the reminders still fire months later?

Yes, if they are scheduled as local notifications on the device at the moment the item is added — the OS holds them, not your app. Ask specifically for expo-notifications local scheduling. A server-push approach also works but needs a backend that outlives the free tier.

Can it read the receipt automatically?

It can, via on-device text recognition, but do not build that first. OCR on crumpled receipts is unreliable enough that it creates support work; ship manual entry with a photo attached, and add scanning later if users ask.

How to Build a Warranty Tracker App with AI (2026)

What a warranty and receipt tracker app needs

Add an item with receipt photo, price, and warranty length
Automatic expiry date and reminders 30 days out
Search and filter by category, retailer, or expiry
Store receipts, manuals, and serial numbers per item
Export a room-by-room inventory for insurance claims

The screens

Screen	What it does
Items	All tracked purchases sorted by expiry, with days-remaining badges
Add Item	Photo of the receipt, name, retailer, price, purchase date, warranty months
Item Detail	Receipt image, serial number, notes, warranty countdown
Expiring Soon	Anything lapsing in the next 90 days
Settings	Reminder lead time, export, subscription

The data model

Item: name, category, retailer, price, purchaseDate, warrantyMonths, serialNumber, room
Attachment: itemId, type (receipt | manual | photo), fileUrl
Reminder: itemId, fireAt, sent
User: email, subscriptionTier

The build prompt (copy this)

Paste this into ShipNative and it becomes a working React Native app with these screens, navigable in a live preview, in about two minutes:

“A warranty and receipt tracker. Users add a purchase with a receipt photo, retailer, price, purchase date, and warranty length; the app computes the expiry date and schedules a reminder 30 days before it. Screens: Items (sorted by expiry with days-remaining badges), Add Item with camera and photo library capture, Item Detail with the receipt image and serial number, Expiring Soon, Settings. Search and filter by category and retailer. Include an export that produces a room-by-room inventory list for insurance. Works offline; images stored per user.”

Then iterate with small, screen-specific prompts (“make the primary button bigger”, “add an empty state”), preview on your own phone, and export the full Expo project whenever you want. The full method: how to build an app with AI.

How it makes money

Freemium: 10 items free, unlimited items plus insurance export behind a $2–4/mo subscription or a $20 lifetime unlock. Lifetime tends to win here — the app is a filing cabinet, and people resist renting one.

Implementation and the revenue math for every model: how to make money from an app. When you’re ready to ship: App Store and Google Play publishing guides.

Build it now

The prompt above is free to run at shipnative.dev — working warranty and receipt tracker app on your phone today, full code export, no credit card.

How to Build a Warranty Tracker App with AI