Cross-platform Find My style tracker for non-Apple users

What to build

A cross-platform BLE item/person tracker for Android (and other non-Apple hardware) that mimics Apple Find My's crowd-sourced mesh relay — an app that lets nearby devices anonymously relay tag locations, paired with optional branded BLE tags sold alongside it, built for Android users and budget tag buyers who have no iPhone-based Find My equivalent.

Apple's proprietary Find My mesh relay can reportedly be functionally replicated outside its ecosystem, opening a theoretical cross-platform tracker opportunity, but there is no historical precedent for a successful clone and Google already ships a competing crowd-sourced Find My Device network for Android.

Demand

The audience is Android users without an iPhone and buyers of cheap third-party BLE tags (keys, luggage, bikes, pets) who want Find My-style crowd-sourced coverage; the reverse-engineering writeup drew real technical interest right now, suggesting builders and tinkerers are actively probing this space.

• Hacker News / Codeberg (FindMyWeb)Signal

  "FindMyWeb: Apple Find My, reverse engineered" — 46 points, 10 comments on Hacker News, described as high engagement at the source.

• Tile / Chipolo (adjacent paid BLE tag market)Analysis

  Established paid BLE tag brands (Tile, Chipolo) show there is a real, proven consumer willingness to pay for Bluetooth item trackers and their companion apps, independent of this specific Find My-clone approach.

Stack

• Android BLE APIs (Nearby / Eddystone)
• Flutter or React Native for cross-platform app
• Supabase or Firebase for backend + relay storage
• libsodium or similar for end-to-end rotating-key encryption
• nRF52-based BLE tag hardware (white-label/OEM)
• Google Find My Device Network API (as integration or benchmark)

Solo + AI difficulty

The hard parts are the cryptographic rotating-key BLE relay protocol and bootstrapping enough installed relay devices to get meaningful location coverage — that cold-start network effect is the real blocker, not the code. The easy parts — app UI, BLE tag pairing, basic map view — are buildable with AI assistance in a few weeks, but a working MVP without real coverage proves little; expect 4-8 weeks to a demo-able app, with the network-effect problem unsolved beyond that.

Entry threshold

A solo developer can build a BLE scanning app and relay backend in weeks using existing open-source reverse-engineering work (e.g. OpenHaystack) as reference; main cost is distribution and avoiding Apple's anti-tracking protections, not capital or licensing.

Window

3-6 months

Where to find first users

• Show HN / Hacker News launch
• r/Android and r/homeautomation communities
• Kickstarter or AliExpress sourcing for branded BLE tag hardware
• Niche Google Play listing targeting "Android Find My alternative" search terms

Competitors

• Google Find My Device
• Samsung SmartThings Find
• Tile
• Chipolo

Counter-signals & risks

• Apple's Find My relay protocol (end-to-end encrypted, rotating BLE keys picked up by nearby Apple devices) is proprietary and undocumented; a reverse-engineered clone may face legal, technical, or App Store/Google Play policy risk.

• Network effects strongly favor Apple: matching its location coverage requires a large installed base of phones running background relay software, a cold-start problem Apple doesn't have with its existing hundreds of millions of devices.

• Google already launched its own Find My Device crowd-sourced Android mesh in 2024, which could directly compete with or obsolete this opportunity for the target Android audience.