TrimixBlending vs Blue Trails
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TrimixBlending
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This app allows technical divers to create custom Trimix blends (Helium, Oxygen, Nitrogen) using partial pressure blending (PPB), with support for Nitrox top-ups and ideal gas law calculations for precise gas mixing. Real Gas Calculations, uses equations of state (Van der Waals) for accurate blending. Accounts for molecular interactions and non-ideal behavior
Blue Trails
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Blue Trails is a free scuba diving app and digital dive log, built by divers. Log every dive, find your next dive site, explore wrecks in 3D and share your dives with your buddies. YOUR DIVE LOG, DONE RIGHT Keep a complete record of every dive: depth, bottom time, visibility, water temperature, tank, gas and nitrox mix, weights and more. Import dives from your dive computer files, add photos and videos, and export your whole logbook to PDF. GOT AN OLD PAPER LOGBOOK? Take a photo of a page and Blue Trails reads your dives and adds them to your digital logbook. Your whole diving history, finally in one place. FIND YOUR NEXT DIVE SITE Browse thousands of dive sites on the map, read reviews from other divers and rate the spots you have been to. Each site shows its depth, coordinates and the marine life you can expect to see there. EXPLORE WRECKS IN 3D Many wrecks come with a 3D model. Spin it, zoom in and plan your route before you get in the water. Filter the map to see wrecks only. KNOW WHAT LIVES THERE Photos, size, conservation status and a short description for each species, in your language. A LOGBOOK OTHER DIVERS CAN TRUST Ask instructors, dive centers or buddies to validate your dives and build a verified dive history. ALL YOUR DOCUMENTS IN YOUR POCKET Store your diving certifications, insurance and medical record in the app. Link with your dive center so they have your details before you arrive, and revoke access any time. SEE HOW YOUR DIVING ADDS UP Stats with records, yearly charts and air-consumption trends. Earn achievement badges as your logbook grows. DIVE WITH YOUR BUDDIES Follow other divers, join dive groups, share dives so your buddies can add them to their own logbook, and share your profile with a QR code. NOT TIED TO ANY BRAND Sign in with your email, Google or Apple in seconds. Blue Trails is not tied to any dive computer manufacturer. You decide who sees your dives, and your data is yours. Terms of Use (EULA): https://bluetrails.eu/policy.html?policyUUID=d7d44a2b-1df1-4d8c-ac46-3dbf7b4f3a7e
Screenshots
Verdict
The clearest difference is in-app purchases: TrimixBlending at none against Blue Trails's 3. TrimixBlending also leads on ads (none vs shown). Blue Trails's advantage is update cadence (every 11 days vs every 14 months) and iOS requirement (15.0 vs 26.5). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Blue Trails sells 3 in-app purchases, starting at $14.99 per year. TrimixBlending asks for nothing beyond the download.
TrimixBlending ships an update every 14 months, Blue Trails every 11 days. The most recent releases landed on October 9, 2026 and October 19, 2026 respectively.
| Parameter | TrimixBlending | Blue Trails |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 14 months | Every 11 days — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 26.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 121 MB |
| Age rating | 4+ | 17+ |
| Developer | Costas Bakopanos | Blue Trails GmbH |
In-app purchases
TrimixBlending
No in-app purchases
Blue Trails
- Seahorse Subscription$14.991 Year
- Turtle Subscription$54.991 Year
- Shark Subscription$99.991 Year









