DeepSix Dive Log vs Interval
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DeepSix Dive Log
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A dive isn't a row of numbers. It's a memory — a path through the water, the wreck's story, the fish you can name now, what the ocean was doing that day. DeepSix Dive Log treats it that way. DeepSix Dive Log is native on iPhone, iPad, Mac, and Apple TV, with an Apple Watch Ultra companion. Your logbook lives on your devices and syncs through your own iCloud. No account. No DeepSix copy of your dive log. And it's free — the whole app. No dive cap, no ads. YOUR DIVE IS A PATH, NOT A PIN DeepSix extracts both entry and exit GPS from Shearwater dive computers — plotted together on the map, so a drift dive finally looks like what it was. Bluetooth download across 12 transport families, built on libdivecomputer; wired USB/serial import on the Mac; Garmin FIT and Suunto JSON too. Arm dive-day GPS tracking and the whole day becomes a route. Dives recorded on Apple Watch — the Depth app included — come in from Health and get their depth profile. WONDERS — WHERE THE OCEAN SHOWS OFF A curated catalog of remarkable underwater places, with real narratives — surfaced the moment a dive of yours lands near one. Each one contributed by DeepSix Dive Log divers. WRECKS, WITH THEIR WHOLE STORY 29,000+ curated diveable wrecks from national heritage registers on every continent, with offline coverage, historical dossiers, period-correct ensigns, and honest position-uncertainty rings. War graves are presented as something you honor, not trivia. Contribute corrections from inside the app; a person reviews every one. PHOTOS BECOME SPECIES Critter Expert identifies around 500 marine species entirely on your device — free, no account, no API key, no internet after a one-time 63 MB download. Region-gated, so it won't suggest a Caribbean fish in Palau, and nothing is ever confirmed for you. Names are verified against the World Register of Marine Species, with threatened-species status and invasive-species reporting built in — over time, your photos become a naturalist's logbook. Want the full range? Bring your own AI key (Anthropic or OpenAI) or a model on your own Mac — never a DeepSix charge. THE COLORS YOU ACTUALLY SAW Underwater photos come back blue. DeepSix knows how deep you were when you pressed the shutter, and whether the water was tropical blue, green or fresh, and restores the reds the water absorbed. Camera-aware, with GoPro red-filter compensation. Apply to one photo or the whole dive; corrections land in Apple Photos as revertible adjustments, never as copies. Video too, frame by frame as your depth changes. Free, on-device, nothing uploaded. WHAT WAS THAT DAY ACTUALLY LIKE? Tide state at your entry minute. Moon phase, sea temperature, swell, bleaching alerts, reef context from the Allen Coral Atlas and NOAA. Years later, the record answers what memory can't. Plus a 7-day conditions planner. BUILT HONEST Gas analysis that names its excluded dives. Deco shown as information, not alarm, when you dive tech. "Dives near" instead of inflated counts. Full-fidelity UDDF and Subsurface export, always free — lossless backup, the open .deepsixarchive format, and SQL and JSON exports any developer can build on. Your dive log will outlive any app, including ours. Smart Lists, gear and kits with service tracking, achievements, trips and a liveaboard planner round out the log. MacDive user? A high-fidelity import brings your dives, gear, photos, and dive-computer profiles across. FREE MEANS THE WHOLE APP Plankton, Whale, and Megalodon — the in-app purchases listed here — are optional Patron tiers that support the project. Their one perk is high-accuracy WorldTides tides; standard tides are free, or bring your own WorldTides key. DeepSix collects nothing unless you choose to send it: a wreck, a photo, a bug report. The privacy policy names every server we run and exactly what each one sees. Privacy policy: https://deepsixdive.com/privacy/ Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Interval
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Your dives, beautifully remembered. Interval is a personal dive logbook for life underwater. Bring your recorded dive profiles, photos and memories together, then revisit them across your Apple devices. Free, with no subscriptions. IMPORT FROM YOUR DIVE COMPUTER. Bring recorded dives into Interval from a compatible dive computer in just a few taps. Support varies by model and connection. EXPLORE THE PROFILE. MOMENT BY MOMENT. Follow the descent and the way back up. Inspect depth, temperature and the other measurements your computer recorded, moment by moment. PHOTOS, NOTES AND DIVE BUDDIES. Add photos, videos, notes, tags and buddies to every dive. Record conditions and equipment, then choose a favourite moment as the cover. SEE YOUR STATISTICS AT A GLANCE. Look back on your dives, explore your statistics and see your time underwater add up. Return to favourite sites and see where you’ve dived on the map. FIND ANSWERS WITH APPLE INTELLIGENCE. Scan your dive logs with Apple Intelligence to find the answers you’re looking for. Beta. Requires Apple Intelligence on iOS 27, iPadOS 27 or macOS 27. ONE LOGBOOK, KEPT IN SYNC. Your dives, kept in sync across iPhone, iPad, Mac, Apple Watch and Apple TV through your own private iCloud. PRIVATE BY DESIGN. Interval has no accounts. No analytics, telemetry, advertising identifiers or tracking. YOUR LOGBOOK GOES WITH YOU. Share dive records with friends, or export your logbook as UDDF whenever you want. Free. No subscriptions. Just diving.
Screenshots
Verdict
The clearest difference is in-app purchases: Interval at none against DeepSix Dive Log's 4. DeepSix Dive Log's advantage is iOS requirement (18.0 vs 26.0). On price, update cadence, ads 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. DeepSix Dive Log sells 4 in-app purchases, starting at $0.99 per month. Interval asks for nothing beyond the download.
DeepSix Dive Log ships an update weekly, Interval every 4 days. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | DeepSix Dive Log | Interval |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad, Mac, Apple TV, Apple Watch | iPhone, iPad, Mac, Apple TV, Apple Watch |
| Requires iOS | 18.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 79 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | Richard Bollar | Brian Groskamp |
In-app purchases
DeepSix Dive Log
- Plankton (Monthly)$0.991 Month
- Plankton (Yearly)$9.991 Year
- Whale$49.99
- Megalodon$99.99
Interval
No in-app purchases









