Depth & pool apnea · Free
Your watch already reads depth and heart rate. What it can't do is tell you when your surface interval is over and it's safe to dive again, or count laps while you're mid-swim. inDepth Blue makes it a Garmin freediving computer, with the surface-rest safety models freedivers train under. inDepth Pool runs your dynamic apnea sessions and catches every dive, turn and length on its own. Together they're inDepth Apnea. Both are free.
Two apps, one logbook
Depth · Freediving & spearfishing
The freediving computer your Garmin was supposed to be. It tells you when you're safe to dive again, reads live depth, can pop the last dive up the moment you surface, opens mid-dive profiles, spots your hangs, marks the reefs and wrecks you want to find again, and keeps your dive log on the wrist.
See inDepth Blue →
Lengths · Dynamic apnea
A dynamic apnea training partner. It catches every dive, turn and length on its own, splits every lap, charts your heart rate between reps, and runs the workouts you build on your phone.
See inDepth Pool →One system, three parts
Two free apps that live on your Garmin and run every session on their own, with no phone anywhere near the water. inDepth Blue: live depth, five surface-rest safety models, alarms, hang detection. inDepth Pool: automatic turns and laps, splits, heart-rate charts.
One phone app for both. It pulls your depth and pool sessions off the watch over Bluetooth into a single logbook, with the graphs, trends and personal bests a watch screen can't draw.
A desktop app that puts both apps on your Garmin over USB in seconds. No developer account, no side-loading gymnastics.
Built by a freediver, for freedivers
I built inDepth Blue because I got tired of the missing features and needless limits on my Fenix and Descent. I wanted a clear idea of when it was safe to dive again. I wanted better alarms, hang detection and better history on the watch. Every feature is in here because the watch on my wrist didn't have it.
It's still built that way: I test releases on my own dives, and the device table changes when divers report what their watches do in the water.
— Mariusz, founder & freediver
Supported hardware
No new gear to buy. inDepth runs on nineteen Garmin models today: the Fēnix 5, 5 Plus, 7 and 8 families plus the Descent Mk2, Mk3 and G2, with more on the way. How deep it reads depends on the watch: the Fēnix 5, 5 Plus and 8 families read true depth (field-verified to 30 m and uncapped), while Garmin's firmware limits what third-party apps can read on the Fēnix 7 and on the Descent Mk2 and Mk3. Nobody has tested a Descent G2, so it carries no figure at all and the app plays it safe. Each row below says which it is.
| Watch | inDepth Blue | inDepth Pool |
|---|---|---|
| Fēnix 5 | ✓True depth | — |
| Fēnix 5S | ✓True depth | — |
| Fēnix 5X | ✓True depth | — |
| Fēnix 5 Plus | ✓True depth | ✓ |
| Fēnix 5S Plus | ✓True depth | ✓ |
| Fēnix 5X Plus | ✓True depth | ✓ |
| Fēnix 7 | ✓Depth to ~3m | ✓ |
| Fēnix 7S | ✓Depth to ~3m | ✓ |
| Fēnix 7X | ✓Depth to ~3m | ✓ |
| Fēnix 8 43mm | ✓True depth | ✓ |
| Fēnix 8 47mm | ✓True depth | ✓ |
| Fēnix 8 Pro 47mm | ✓True depth | ✓ |
| Fēnix 8 Solar 47mm | ✓True depth | ✓ |
| Fēnix 8 Solar 51mm | ✓True depth | ✓ |
| Descent Mk2 / Mk2i | ✓Depth to ~3m | ✓ |
| Descent Mk2 S | ✓Depth to ~3m | ✓ |
| Descent Mk3 43mm | ✓Depth to ~3m | ✓ |
| Descent Mk3i 51mm | ✓Depth to ~3m | ✓ |
| Descent G2 | ✓Depth unverified | ✓ |
True depth = uncapped depth reading on Fēnix 5, 5 Plus and 8 (field-verified to 30 m).Depth to ~3m = firmware-limited on Fēnix 7, Descent Mk2 and Mk3.Depth unverified = the Descent G2, which nobody has tested yet.
~40 m is the practical limit on Fēnix, whose cases are rated 10 ATM. On the seven ~3 m rows (the Fēnix 7 family, the Descent Mk2 and the Descent Mk3) inDepth Blue offers only the surface-rest models that don't need depth (2× / 3× Dive Time and Manual, default 2×): Adaptive (AIDA), Taravana and Molchanovs need a depth they can trust, and fed a ~3 m reading all three already came out at plain 2×, so the label now matches the arithmetic. Rests don't get shorter. Those seven rows don't all rest on the same evidence: the Descent Mk3 is measured, the Fēnix 7 is inferred, and the Descent Mk2 is reported clamped at ~3 m by a diver, not instrumented. The Descent G2 is the eighth row without a true-depth badge and it carries no figure at all — nobody has tested one. It's a Descent, so we expect the same cap and the app treats it that way, which hides the same three rest models there. Molchanovs' 60 m / 24-hour rule isn't enforced on any watch; that one stays yours to keep. How we know each number. More Garmin watches are planned: tell us which one you use and we'll let you know if it's added.
Free
The desktop installer puts the watch app on your Garmin and the phone app on your iPhone or Android. All of it free.
