Deep Parking Recovery
Track+ helps you recover your route through multi-level garages and other weak-signal spaces where GPS fades. Use step tracking, visual motion, and checkpoints to return to your vehicle with practical, on-device guidance.
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Offline-first spatial toolkit for Android and Wear OS
SIMT
Plan. Track. Measure.
One offline-first app for Android and Wear OS that keeps working where map apps quit. Plan targets, find your car underground, share your live position over local Wi-Fi, measure with AR, and track planets and satellites, all computed on your device.
Offline-first
Private by default
Android + Wear OS
Free, no paywall
4.8★
average rating
10+
tools in one app
Available now on Android 9+ with Wear OS companion support.
What People Use SIMT For
From underground garages to open water and dark-sky nights, SIMT stays useful where ordinary map apps stop.
Marine Backup
When you are offshore or outside normal coverage, SIMT can still orient you with offline directions to capes, lighthouses, and the nearest land points. It works as a reliable backup when ordinary map apps depend too heavily on connectivity.
Event Coordination
Link+ helps small groups stay aware of each other across festivals, stadiums, campuses, and other crowded venues. Share live position over the same local network without relying on mobile data.
Measure on Site
Use AR measurement for quick distance and area checks, then switch to calibrated on-screen tools and leveling modes when you need a second reference. It fits light site work, furniture planning, and everyday layout decisions.
Sky Tracking
Follow planets, Moon phases, satellites, and celestial targets from the same app you use on the ground. SIMT calculates positions on device, so the astronomy tools remain useful even when you are offline.
Accessible Guidance
SIMT supports orientation and Qibla workflows with precise bearings, haptic feedback, and TalkBack-friendly screen reader behavior. The goal is clearer, more independent guidance without extra setup.
Share, Sync, and Keep Your Bearings
SIMT is not only for solo navigation. It can link nearby phones, sync targets to Wear OS, and keep your data portable without turning into a cloud-first product.
Link+ on local Wi-Fi
Start with an NFC tap and share your live position with people on the same Wi-Fi or LAN, encrypted, even when there is no internet connection.
Wear OS companion
Sync targets to your watch and keep navigating from your wrist when you do not want to hold the phone.
Backup when you choose
Keep data local by default, then back up targets, images, and settings to Google Drive only when you want to.
Offline fallbacks built in
If Google Maps or online geocoding are unavailable, SIMT falls back to its own offline engines instead of leaving you stuck.
See SIMT in Action
Target planning, GPS-denied tracking, AR tools, advanced GNSS, and spatial overlays live together in one Android experience instead of being spread across multiple apps.
What You Get in One App
SIMT is a complete offline-first spatial toolkit for planning, tracking, measuring, sharing, automating, and exploring the sky, all in a single app.
Plan with targets and maps
Create targets from maps, coordinates, photos, QR codes, and notes, or start from 30K+ built-in cities, with online and fully offline map support.
Track where GPS fades
Track+ fuses camera motion, step detection, sensors, and checkpoints to recover position in underground parking and other weak-signal areas.
Measure and align
Use Ray+ for AR distance and area measurement, Measure for calibrated on-screen sizing, and Plumb Bob for leveling and pitch and roll work.
Explore the sky
Track planets, Moon phases, satellites with TLE data, deep-sky targets, and the live Orrery without depending on cloud astronomy services.
Private by default
Targets, images, and settings stay on your device first. Optional Google Drive backup and restore is there if you decide you want portability.
Free, no paywall
Every feature is unlocked for everyone, with no paywall and no forced ads. Support the app by choice, never because a tool is locked away.
See targets through your camera
Iris overlays your saved targets, satellites, and planets on the live camera with no ARCore required, so it runs offline and even on modest phones.
Reach survey-grade accuracy
On supported hardware, SIMT reads raw multi-constellation GNSS and can apply optional NTRIP RTK corrections to push positioning toward centimeter precision.
Automate the busywork
Let SIMT capture targets for you. It can remember where you parked and log points on a schedule, interval, altitude change, or activity, hands-free.
Field Notes
Fresh Guides for Going Further
Practical ideas, field-tested workflows, and clear explainers from the SIMT Blog, refreshed here whenever a new guide is published.
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Carry One App Instead of Ten
SIMT combines offline planning, GPS-denied tracking, survey-grade GNSS, AR measurement and overlays, local device linking, automation, and offline astronomy in one privacy-first Android app.
Free, no paywall, and available now on Android with Wear OS support.
Android 9+ phone app with Wear OS companion support.
Frequently Asked Questions
What is SIMT?
SIMT is an offline-first spatial toolkit for Android and Wear OS. It combines target planning, indoor and weak-signal tracking, AR measurement, advanced GNSS, local sharing, automation, and astronomy in one app.
Does SIMT work offline?
Yes. Target guidance, movement tracking, offline geocoding, offline map fallback, measurement tools, astronomy calculations, and many planning tools work without internet. Online maps, weather, and cloud backup are optional.
Can SIMT help me indoors or underground?
Yes. Track+ combines visual tracking, step detection, sensors, and checkpoints to help recover your position in places like underground parking or other weak-GPS environments.
Can I measure things with SIMT?
Yes. Ray+ handles AR distance and area measurement on supported devices, while Measure and Plumb Bob cover on-screen measurements and leveling tasks.
Can I share or sync with other devices?
Yes. Link+ shares live location over the same local network, and the Wear OS companion syncs targets and lets you navigate from your wrist.
Does SIMT support astronomy, satellites, or Qibla?
Yes. SIMT can track planets, Moon phases, satellites with TLE data, celestial targets, and a live Orrery view, and it also includes Qibla direction features.
Is my data private with SIMT?
Yes. SIMT keeps targets, images, and settings on your device by default. Optional Google Drive backup is available when you choose to use it.
What devices are compatible with SIMT?
SIMT runs on Android 9.0 or later and includes Wear OS support. Some tools, such as AR measurement or high-precision GNSS, depend on your device hardware.
How accurate is SIMT?
Accuracy depends on your hardware and surroundings. SIMT fuses satellite, motion, and magnetic data with the World Magnetic Model for dependable true-north bearings, and on supported phones it reads raw multi-constellation GNSS and can use optional NTRIP RTK corrections to approach centimeter, survey-grade positioning.
Is SIMT really free?
Yes. SIMT is completely free with no paywall, and every feature is unlocked for everyone. There are no forced ads. If you want to support development you can optionally watch an ad or donate, but it is never required and never unlocks anything, because everything is already free.
Does SIMT support accessibility?
Yes. SIMT includes haptic feedback and TalkBack-friendly screen reader support to make direction-finding more accessible.
Why is it called SIMT?
SIMT comes from the Arabic word samt (سَمْت), meaning direction, the same root that gives English the words azimuth, zenith, and nadir. The name reflects the app's focus on knowing exactly where things are.