iso.me is an open-source iOS app that tracks the places you visit and the routes you take — and keeps every byte of that data on the device. No accounts. No cloud. No analytics. AGPL-3.0.
Repo: https://github.com/CodyBontecou/isome
App Store: https://apps.apple.com/app/id6761960794
Why I built this
I wanted a location history I could trust. Apple's "Significant Locations" is a black box. Google Timeline lives on Google's servers. Most third-party trackers either need a cloud account or ship an SDK that quietly phones home.
So I built one that doesn't.
iso.me records visits and GPS tracks using CLLocationManager visit monitoring and continuous location updates. Every point, every visit, every export — it stays on your device. There is no backend. There is no account system. There is no analytics SDK. The dependency list is empty: it's pure Apple frameworks.
The whole thing is AGPL-3.0 on GitHub.
What it does
Visit detection. When you arrive at a place and leave it, the app logs the visit using iOS's built-in visit monitoring API. Each one gets reverse-geocoded so you see a real address, not just a coordinate.
Continuous tracking. When you want a precise route — a hike, a drive, a long walk — you can start a continuous session. Configurable distance filter (5m–200m) and an auto-off timer so it doesn't drain your battery if you forget. Tracking is free and unlimited.
Live Activities. Lock screen + Dynamic Island show distance, points, and time remaining while a session is running.
Watch app. Today's visit count, distance, tracking status, syncs via App Group.
Export / import. JSON, CSV, or Markdown. Fully reversible — you can wipe the app, re-import, and you're back where you started. Export is the one paid feature: a one-time $9.99 unlock. Tracking, visits, routes, the watch app, Live Activities — all free, all unlimited, forever.
How it makes money
The pricing is on purpose: the app does its job (track your stuff, keep it private) for free, and if you ever want your data outside the app — JSON for a script, CSV for a spreadsheet, Markdown for an Obsidian vault — that's $9.99 once, lifetime. No subscription. No ads. No "free tier with a usage cap that nags you on day three."
I picked this split because it matches what people actually value differently: tracking is the commodity (Apple, Google, and a hundred apps do it), but a clean, lossless export of your full history is the part you'd actually pay for once. And it lets the privacy promise be real without a paywall in the way of it.
The architecture in one paragraph
SwiftUI front end, SwiftData on-device store, CoreLocation for visits and GPS, CoreMotion for activity detection, ActivityKit for Live Activities, WidgetKit for the watch + lock screen. Zero third-party dependencies. No network code in the app at all — there's nothing to send anywhere because there's nowhere to send it.
If this resonates, a star on the repo helps a lot: