For MISSION ONE, MISSION2 and MISSION3
ATMOS App
Your complete digital dive companion
Connect your ATMOS MISSION3 to your smartphone and turn every dive into a detailed digital record. Synchronise scuba and freediving logs, review dive profiles, manage dive sites, customise selected watch settings and keep your diving history together in one easy-to-use app.
The ATMOS App is available free of charge for iPhone and Android and also supports MISSION ONE and MISSION2.
Free download. Apple, the Apple logo and App Store are trademarks of Apple Inc. Google Play is a trademark of Google LLC.
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Wireless sync
Transfer dive logs from your MISSION dive computer to your phone using Bluetooth.
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Detailed dive profiles
Review depth, time, temperature and recorded events in a clear graphical dive profile.
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Freediving tools
Organise freediving sessions and work with STA, dynamic training and custom apnea tables.
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Dive sites and GPS
Add dive sites and review supported surface GPS entry and exit positions on a map.
Wireless dive log synchronisation
Every dive, on your phone
Connect your MISSION dive computer to your smartphone using Bluetooth and transfer recorded dives wirelessly. Once synchronised, the app presents the information in a much more detailed and accessible format than is possible on the watch display.
Depending on the selected dive mode and recorded information, a log may contain:
- Date, start time and dive duration
- Maximum and average depth
- Water temperature
- Surface interval
- Dive mode and breathing gas
- A graphical dive profile
- Safety, depth, time and ascent events
- Supported GPS entry and exit positions
- Dive-site details and personal notes
- Heart-rate information when recorded by a compatible device
ATMOS App connected to an ATMOS MISSION3 dive computer.
Detailed scuba logbook
Your dive, as a complete record
Review each scuba dive as a complete digital record. The depth-over-time graph makes the dive easy to understand at a glance, while markers identify important events such as ascent warnings, depth alerts, time alerts, safety stops and decompression stops.
The app supports records from Air, Nitrox, Multi-Gas and Gauge modes. Additional information can include the purpose of the dive, dive number, entry method, visibility, cylinder information and Surface Air Consumption data when the required values have been entered.
Official ATMOS App detailed scuba log screen with dive profile and cylinder information.
Freediving and apnea training
Sessions, not loose descents
The ATMOS App is designed for both scuba divers and freedivers. Freediving records are grouped into sessions, making it easier to review multiple descents and surface intervals without treating every descent as an unrelated activity.
MISSION3 supports records for:
- Open-water freediving
- Pool freediving
- Static apnea or STA
- Dynamic training
- CO2 tables
- O2 tables
- Custom training tables
With MISSION3 firmware 1.108 or later, selected freediving alerts and Custom Tables can be configured in the app and transferred to the watch. This is particularly useful for longer training sequences that would be time-consuming to enter with the watch buttons.
ATMOS App activity list with scuba, freediving, running and cycling records.
Activity summary and daily statistics
Everything in one overview
The redesigned Summary page brings recent dives, activities and personal statistics together. Depending on the paired model and available data, it can show totals, recent activity, maximum depth, accumulated dive information, steps, calories and sleep information.
Official ATMOS App Summary screen with dive and daily activity statistics.
GPS and dive sites
Remember where you dived
MISSION3 can save GPS positions at the surface, including supported dive entry and exit locations. After synchronisation, these positions can be included in the digital dive log and viewed on a map.
Use the app to add and edit dive sites, assign a site to a log, maintain a personal list of locations and browse public logs from other divers. GPS reception only works at the surface and requires a sufficiently clear view of the sky. The watch and app do not provide underwater GPS tracking.
Official ATMOS App screen for creating a dive site with coordinates and map location.
Community and diver profile
Share when you want to
Divers can choose to share activities through the ATMOS community Feed and browse public dive logs from around the world. Public entries may contain dive statistics, locations, descriptions, photographs, likes and comments. Sharing is optional. The app can still be used as a personal logbook without publishing activities.
The profile section also allows users to maintain diver information and diving certifications. A digital record can be useful while travelling, but acceptance of certification information remains subject to the issuing training organisation and the dive operator.
Official ATMOS App diver profile with activity totals and certification records.
ATMOS community
Explore dives around the world
Browse public dive logs and activities shared by other divers. See shared locations, profiles and stories, and choose whether to share your own activities.
Sharing is optional: your ATMOS App can also be used as a personal digital logbook.
Official ATMOS App community feed showing a shared scuba dive.
MISSION3 device management
Your watch, your way
The Device section provides access to the paired MISSION3 and supported device functions. Current options include synchronising data, reviewing device information, managing dive sites, selecting or uploading a watch face, viewing tides, accessing health information, opening the user manual and using Find Device.
Find Device works only while MISSION3 is connected and within Bluetooth range. It is intended to locate a nearby watch and is not a remote GPS-tracking service.
Official ATMOS App watch-face customisation screen for MISSION3.
Smartphone connected functions
Weather, tides and notifications
When paired with a compatible smartphone, MISSION3 can receive selected smart notifications and obtain weather, sunrise, sunset and tide information. The smartphone and app provide the data connection because the watch does not contain its own mobile internet connection.
Notification behaviour depends on the phone, operating system, Bluetooth connection, background-operation settings, permissions and firmware version. Android users must grant the required notification-access and background permissions.
UDDF export and data portability
Dive logs can be exported in UDDF format. UDDF is an open XML-based format used to exchange dive information between compatible logbook applications. This provides a practical way to maintain a separate archive or transfer dives to another program that supports UDDF.
Compatibility
Compatibility and current status
| Item | Apple | Android |
|---|---|---|
| App name | ATMOS - Diving logbooks | ATMOS: Online dive logbook |
| Price | Free | Free |
| Supported computers | MISSION ONE, MISSION2 and MISSION3 | MISSION ONE, MISSION2 and MISSION3 |
| Verified listed version | 4.2.6 | 4.2.5 |
| Verified release date | 27 October 2026 | 25 August 2026 |
| System requirement | iOS 15.0 or later | Google Play determines device compatibility |
| Device category | iPhone | Android phone |
| Listed languages | English, Japanese, Korean, Turkish, Simplified Chinese and Traditional Chinese | Language availability may vary by device and region |
| Dutch interface | Not listed | Not advertised |
Checked on 7 November 2026 against the Netherlands App Store and Google Play. Listed versions can differ by platform and region. Follow the store links for current compatibility.
Support
Connecting MISSION3 to the app
How to connect MISSION3 to the ATMOS App
- Install the ATMOS App and create or sign in to an ATMOS account.
- Enable Bluetooth on the smartphone.
- On MISSION3, open Settings, select Connect and switch Connect App on.
- Open the ATMOS App and select the watch icon at the top left.
- Select the plus symbol or Pair new device.
- Choose the watch identified as M3-XXXX.
- Enter the pairing code displayed on MISSION3.
- Complete the connection and synchronise the available logs.
Important: pair the watch from within the ATMOS App. Pairing only through the phone Bluetooth menu may prevent the app connection from being completed correctly.
If pairing fails
- On MISSION3, open Settings, select Connect and then Unpair.
- In the phone Bluetooth settings, forget or remove MISSION3.
- Delete the device from the device list inside the ATMOS App.
- Restart the pairing process from within the ATMOS App.
- Confirm that the app and MISSION3 firmware are current.
App features and firmware requirements
The verified iOS 4.2.6 and Android 4.2.5 release notes list:
- A redesigned Summary page with more detailed activity statistics
- Sign in with Google
- Biometric login support
- STA-format logs for MISSION3
- Configuration of MISSION3 freediving alerts through the app
- Configuration of MISSION3 Custom Tables through the app
- Find Device for MISSION3
- Minor bug fixes
The MISSION3 app-configuration functions require firmware 1.108 or later. Check the official ATMOS support page for the current firmware version. Firmware updates for MISSION3 are installed with a computer and the USB cable, following the official ATMOS support procedure.
Support
Frequently asked questions
Is the ATMOS App free?
Which ATMOS dive computers are supported?
Does the app replace the dive computer?
Can the app track my position underwater?
Can I export my dives?
Can I use the app without sharing my dives?
Can I update MISSION3 firmware through the app?
Does MISSION3 sync health data to Apple Health?
Is the app available in Dutch?
Does Find Device work anywhere?
After the dive
The dive ends. The story does not.
Sync on the boat, relive the profile at dinner and share the dive site with your buddy. Every dive stays with you.
Free download
Take your dive log wherever you go
Download the free ATMOS App, connect your MISSION3 and keep your scuba dives, freediving sessions, dive sites and personal statistics together on your phone.