Blue Infinity Freediving Watch vs Thalos
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Blue Infinity Freediving Watch
Track your snorkeling, freediving, and spearfishing sessions with real-time depth, duration, and heart rate data. Review your dive history, routes, and detailed metrics on a companion app.
- Real-time depth and duration
- Heart rate and water temperature
- Location tracking
- Dive session history
- Dive route on map
- Depth over time chart
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Freediving for Apple Watch — snorkeling and spearfishing too. Blue Infinity records your dives on Apple Watch and shows you the detail on iPhone. Three modes, each built for the way you dive. OPEN WATER • Depth and dive time on the way down; your last dive's depth and time when you surface • Surface and session timers, heart rate and water temperature • Your route on a map, and a fly-through that follows it dive by dive POOL SESSIONS • Swim your reps — each dynamic is found for you, with its distance and dive time • Start and end a static with a turn of the crown • Tag disciplines (STA, DYN, DNF, DYNB) and set your pool length LINE DIVES • Live depth, dive time and ascent and descent speed • A tap at 16 ft on the way down, and a recovery countdown between dives ON IPHONE • Depth and heart rate charted together, for every dive in a session • Notes, disciplines, and trimming a session or a single dive to where it really started and ended • Haptics you can set for each mode Your dives are saved to Apple Health and your iCloud account. There's no account to create. Depth currently reads to 20 ft — the limit Apple sets for apps like ours. We've applied for access to deeper water. Works with Apple Watch Ultra and Apple Watch Series 10 or later. Recording on the Watch is free. The dive detail on iPhone is free for your first 5 dives, then by subscription. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Thalos
This comprehensive dive app offers a robust dive logbook, detailed dive site information with emergency plans, and multiple dive calculators. It includes features for instructors to manage students and courses, and a social feed for divers to connect and share experiences. The app works fully offline, ensuring critical data is always accessible.
- Offline dive logbook
- Dive site database with emergency plans
- 9 essential dive calculators
- Instructor module for course management
- Social feed and community features
- Emergency mode for critical access
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Thalos is the all-in-one dive app built for serious divers and instructors. Whether you're planning a deep technical dive or running an open water course, Thalos has everything you need — and it works fully offline when it matters most. DIVE LOGBOOK Log every dive with depth, time, gas, conditions, marine life sightings, buddy signatures, and photos. Full version history keeps your records safe. Organize dives into trips and track your personal certifications. DIVE SITES & EMERGENCY PLANS Access 510+ dive sites with detailed emergency action plans, nearest hyperbaric chambers, and emergency contacts — all stored locally so they're available even without signal. 9 DIVE CALCULATORS • Bühlmann ZHL-16C decompression planner with gradient factors • Gas planner and gas blending • SAC rate, turn pressure, weight calculator • Dive tables, unit converter, altitude diving EMERGENCY MODE One tap gets you to emergency procedures and critical contacts. Works 100% offline. INSTRUCTOR MODULE Manage students, run courses with 26 built-in templates, track skill sign-offs, generate paperwork (liability waivers, medical forms, training dives), and issue certifications. SOCIAL FEED & TANK TAPS Share your dives, follow other divers, and give Tank Taps — the diver's way of saying nice dive. COMMUNITY Discover and post dive classes, trips, and dive centers. Instructors can manage enrollments directly in the app. SUBSCRIPTION Thalos requires a subscription after a 1-month free trial. $2.99/month or $19.99/year. Terms of Use: https://blackflagdivecenter.github.io/Thalos/terms.html Privacy Policy: https://blackflagdivecenter.github.io/Thalos/privacy.html
Screenshots
Verdict
The clearest difference is monetization model: Blue Infinity Freediving Watch at free with in-app purchases against Thalos's subscription. Thalos's advantage is update cadence (daily vs monthly) and iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases 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 Infinity Freediving Watch sells 2 in-app purchases, starting at $5.99 per month and Thalos sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
Blue Infinity Freediving Watch ships an update monthly, Thalos daily. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.
| Parameter | Blue Infinity Freediving Watch | Thalos |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 2 — better |
| Update frequency | Monthly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 245 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | James Mansfield | JOHN WALLIS YOUNGBLOOD |
Customer experience
Blue Infinity Freediving Watch
Thalos
In-app purchases
Blue Infinity Freediving Watch
- Monthly$5.991 Month
- Annual$29.991 Year
Thalos
- Thalos1 Month trial$2.991 Month
- Thalos1 Month trial$19.991 Year
Questions
Is Blue Infinity Freediving Watch free?
Is Thalos free?
Do Blue Infinity Freediving Watch or Thalos have ads?
Which is updated more often, Blue Infinity Freediving Watch or Thalos?
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