PriceIt - AI Price Scanner
Hello everyone 
I just launched my first mobile app called PriceIt, built with Expo, Clerk, and Convex
PriceIt helps people quickly verify and compare product prices around them so they can avoid overpaying. The idea came from a common problem where the same product can have very different prices depending on the store.
With PriceIt, users can:
1. Scan a product
2. Instantly check price information
3. Compare prices from nearby sellers
4. Share price results easily
Convex powers most of the backend logic and real-time experience:
* Database + Schema – storing products, scans, and price reports from users
* Queries – fetching price records for products and returning nearby price comparisons
* Mutations – creating new price reports when users submit or verify prices
* Realtime subscriptions – users see updated price data instantly when new prices are added
* Auth integration with Clerk – user identity is passed to Convex to associate price submissions with accounts
* Server-side functions – used to process scan results and coordinate price verification logic
* Expo – mobile app
* Clerk – authentication
* Convex – backend, database, and realtime sync
* Gemini 3 Flash – product image analysis for scans
It’s currently live on the Google Play Store and still evolving, so I’d really appreciate feedback from the community.
Google Play: https://play.google.com/store/apps/details?id=com.priceit.priceitapp
Website: https://www.priceit.app
Would love any feedback on the Convex architecture or implementation choices as I continue improving it
I just launched my first mobile app called PriceIt, built with Expo, Clerk, and Convex
PriceIt helps people quickly verify and compare product prices around them so they can avoid overpaying. The idea came from a common problem where the same product can have very different prices depending on the store.
With PriceIt, users can:
1. Scan a product
2. Instantly check price information
3. Compare prices from nearby sellers
4. Share price results easily
How I'm using Convex
Convex powers most of the backend logic and real-time experience:
* Database + Schema – storing products, scans, and price reports from users
* Queries – fetching price records for products and returning nearby price comparisons
* Mutations – creating new price reports when users submit or verify prices
* Realtime subscriptions – users see updated price data instantly when new prices are added
* Auth integration with Clerk – user identity is passed to Convex to associate price submissions with accounts
* Server-side functions – used to process scan results and coordinate price verification logic
Tech stack
* Expo – mobile app
* Clerk – authentication
* Convex – backend, database, and realtime sync
* Gemini 3 Flash – product image analysis for scans
It’s currently live on the Google Play Store and still evolving, so I’d really appreciate feedback from the community.
Google Play: https://play.google.com/store/apps/details?id=com.priceit.priceitapp
Website: https://www.priceit.app
Would love any feedback on the Convex architecture or implementation choices as I continue improving it
