Grammar Police is an iMessage app that lets you send humorous grammatical correction alerts to friends and family. It became a fun way to playfully call out writing mistakes in conversations.
Features
- Sticker collections — Multiple themed packs including "Meme Police," "Anniversary Police," and character variants
- Grammar correction tool — Highlight and correct errors with style
- Criminal update — Reverse or "un-grammarfy" text for when you're the one who messed up
- iMessage native — Built specifically as an iMessage extension for seamless use
Reception
- 5.0 star rating on the App Store
- Users describe it as "really really fun"
- Free to download, no data collected
What I learned
Building for iMessage taught me to work within tight constraints — memory limits, real-time sync requirements, and Apple's review process. The app later inspired Grammar Police vs Criminals, a full multiplayer party game.