Updated August 27, 2026 · 7 min read · Written by ProposalAI

Mobile Proposal Example (React Native Offline Workouts)

A fitness coach needs workouts when the gym wifi dies. The proposal should talk about local storage and sync, not a generic “beautiful mobile app.”

Example job situation

A trainer wants a React Native (Expo) app where workout plans still open in the basement gym. Sync can wait until they are back online. They asked whether you would use AsyncStorage or something else, and they do not need Apple Watch in v1.

Weak / generic proposal

I am a mobile app developer for iOS and Android. I can build your fitness app with amazing UI, social features, AI coaching, and wearable integration.

I have published many apps on the App Store. Let’s jump on Zoom to discuss.

Why this is weak

  • It adds social, AI, and wearables they said they do not need.
  • It never answers AsyncStorage vs alternatives.
  • It pushes Zoom before they have a contract.

Improved proposal

Hi — v1 I would keep this as Expo React Native, store the active plan and last-downloaded workouts on-device, and queue any check-ins to sync when the network returns. No Watch app.

For local data I would not put the whole plan in AsyncStorage if the workout JSON can grow; I would use a small SQLite layer (expo-sqlite) for exercises and sets, and keep auth tokens in SecureStore. AsyncStorage is fine for flags like “last sync at.”

I shipped offline lesson downloads in a training app where the campus wifi dropped in lecture halls — same pattern: read locally first, sync later.

Do you already have the workout content as JSON, or is it still in spreadsheets? And should a trainer edit plans in this app in v1, or only in a web admin later?

Why this is stronger

  • It answers the storage question with a split (sqlite vs flags vs secrets).
  • It explicitly drops Watch, matching the post.
  • Proof is offline-first, not “I published apps.”

Personalization points

  • Confirm Expo vs bare React Native if they only said “React Native.”
  • Do not promise App Store submission if they only asked for a TestFlight/internal build.
  • Ask who owns Apple/Google developer accounts.

Questions you could ask

  • Is content already structured, or still in spreadsheets?
  • Trainer editing in-app for v1?
  • iOS only, or Android in the same milestone?

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