Get help
Email pbouffaut@gmail.com — I read everything.
Found a bug or want a feature? Open an issue on GitHub.
Frequently asked
My COSMIQ+ doesn’t show up when scanning.
Wake the dive computer (press a button so the screen is on), keep it within a meter of
your iPhone, and make sure Bluetooth is enabled in iOS Settings. The device advertises
as “COSMIQ” or “Deepblu”.
My older dives look perfect, but recent dives have no profile (or show a
“firmware storage bug” note).
This is a bug in the Cosmiq’s own firmware, not in your unit or the app, and it affects
every COSMIQ+, and Cosmiq 5 up to the latest firmware. Once a logbook grows past roughly
a hundred dives, the device starts writing new profiles into the wrong flash slot: newer
dives read back as garbage (this is what shows up as “645 m” dives in Subsurface), and the
oldest profiles get overwritten. The app recovers everything that is still physically
readable, and imports the rest with correct date, duration, depth and temperature but no
depth curve — clearly marked on the dive page. There is no factory reset and no firmware
update that fixes it (Deepblu shut down first). The one reliable defense: sync soon
after diving — once a dive is in your logbook and iCloud, the firmware can’t lose it.
Freedive alarms 3–6 are missing.
The original COSMIQ+ supports two freedive depth alarms; alarms 3–6 exist only on the
Cosmiq Gen 5. The app shows what your hardware supports.
Will my logbook survive deleting the app?
Yes, if iCloud Drive is enabled: the logbook is stored in your private iCloud container
and merges back after reinstalling. Without iCloud, the logbook lives only on the phone —
export UDDF backups if you need extra safety.
Can I move my dives to Subsurface or MacDive?
Yes — open a dive (or the whole logbook) and export UDDF. Both apps import it directly.
Is this an official Deepblu app?
No. Deepblu shut down its app and servers; CosmiQ Companion is an independent,
open-source project that keeps the hardware usable. It is not affiliated with or endorsed
by Deepblu, Inc.
Refill my tanks 🤿
CosmiQ Companion is free — no ads, no accounts, no subscriptions — and it will stay that way. But air, sadly, is not. If this app saved your logbook (or your dive computer) and you can afford it, you can help me refill my tanks: scan the code with the PayPal app, or tap it if you’re reading this on your phone, and send whatever feels right.
No pressure, no perks — the app works exactly the same either way. Every bar helps.
Dive safety
This is unofficial, experimental software. Always verify settings on the dive computer’s own screen before entering the water, and never rely on a single instrument for life-safety decisions.