When & where
Date, time in and out, site, area, country, operator and boat. Reuse the sites you’ve already logged.
Diver’s LogScuba dive logbook
Every dive has a story.
Diver’s Log is a modern scuba logbook for iPhone, iPad, Mac, Apple TV, Apple Vision Pro and Apple Watch. Record each dive in rich detail, see it drawn as a traditional logbook worksheet, bring your paper-log history forward, and keep certifications, gear and signatures in one private place.
Version 2.0 · Coming soon to the App Store
Coming soon on theApp StoreSee what’s inside
- iPhone
- iPad
- iPhone Duo
- Mac
- Apple TV
- Apple Vision Pro
- Apple Watch
- Log the diveRich, structured details
- See the worksheetA traditional profile, calculated
- Get it signedBuddy and instructor verification
- Keep it everywherePrivate iCloud sync
See it in action
A logbook you’ll want to open.
From the Dashboard to a signed dive in about 25 seconds, on iPhone with a sample logbook.
Real app screens with a fictional sample logbook. No sound.
Rich dive records
The whole dive, not just depth and time.
Log as much or as little as you like. Every detail is structured, so your logbook can be searched, filtered and totaled, not just read.
Depth & time
Maximum and average depth, bottom time, dive number, and up to six depth levels for a multilevel dive.
Gas & cylinders
Oxygen percentage, cylinder size, and start and end pressure for you and your buddy.
Water & weather
Body of water, water and surface temperature, visibility, current, weather, surf and tides.
Suit & weight
Suit type and thickness, hood, gloves, boots, and the weight you carried.
What you wore
A saved gear configuration plus the individual items you used on the dive.
Buddies & training
Your buddy and your role, from student to instructor. Training dives keep the course, instructor, and the checks and skills you practiced.
Notes & sightings
Wildlife you saw, anything that went wrong, notes, private notes and tags.
Plus 22 dive types, such as boat, wreck, night, drift and nitrox, and 14 dive purposes, from recreational to scientific.
Traditional profile
Your dive, drawn like a paper logbook.
Diver’s Log turns your depths and times into the profile worksheet divers have drawn in paper logs for decades, calculated with the method you trained on.
- Pressure groups and limits. Starting and ending pressure group, no-decompression limit and adjusted limit, wherever the method uses them.
- Repetitive dives. Link the previous dive and the surface interval to see residual nitrogen time, actual bottom time and total bottom time.
- Multilevel dives. Up to six levels, drawn as steps.
- Clear limits. When a dive falls outside what a method covers, Diver’s Log says so instead of guessing.
Calculation methods
Calculated with the method you trained on.
Choose a method in Settings. For historical dives, Diver’s Log can match the certifications you held on the dive date, and you can always correct it.
Recreational Dive Planner (RDP)
Table calculations for single-level dives.
The Wheel
Multilevel dives as the Wheel worked them out, for historical logs.
eRDPML
Multilevel dives with the electronic RDP’s lookup values.
Air/Nitrox tables
SSI’s combined air, EAN32 and EAN36 table methodology.
Air tables
Revision-specific U.S. Navy air table schedules.
Bühlmann ZHL-16C
The ZHL-16C tissue model with the gradient factors you set. Diver’s Log doesn’t invent a default.
For your logbook, not your next dive.
Calculations are provided for education, historical reconstruction and logbook reference. Diver’s Log is not a dive computer and does not replace formal dive planning with your training, tables or dive computer. You acknowledge this once before calculated profiles appear.
Historical dives
Bring your paper logbook forward.
Years of dives live in paper logbooks. Enter them as historical dives and Diver’s Log rebuilds each worksheet the way it would have been worked out at the time.
Reconstruct the past
Mark a dive as a historical reconstruction. The method comes from the dive itself, or from the certifications you held on that date.
Keep your running totals
Record the bottom time for that date and your total to date as written in your log, or let Diver’s Log add them up from your dives.
Repetitive dives, linked
Link a dive to the one before it and its surface interval, so repetitive-dive values carry forward.
Signatures & verification
Signatures that stay meaningful.
Add as many verifiers to a dive as you need, such as a buddy, a divemaster or your instructor, each with a name, role, agency, number and date.
Sign in person
Hand over your device and have them sign right on the screen. Available everywhere except Apple TV.
Keep historical signatures
Add a picture of a signature from your paper log. It’s labeled as historical evidence, never as a digital verification.
Changes are flagged
If the signer’s details or the signed dive change later, that verification is marked as changed after signing.
Signed on the device, in person.
An image from an earlier logbook.
A verifier typed in, not signed.
Something changed since it was signed.
Certifications, gear & milestones
Everything around the dive, too.
Certifications
Agency, course, number, dates, instructor and training center. Ten common agencies are built in, and you can add any other.
Equipment
Your gear with manufacturer, model and serial number, plus a service history. Retire items without losing the dives they were used on.
Gear configurations
Save reusable setups, like a warm-water travel kit, and add them to a dive in one step.
Dashboard
Confirmed dives, bottom time, maximum depth, unique sites, dives over time and your next milestone.
Logbook
Search, filter and sort every dive. Drafts stay separate until you confirm them.
Photos & videos
Link photos and videos from your Photos library to a dive and pick a featured one. They’re linked, not copied.
Private by design
Your logbook stays yours.
Diver’s Log keeps your dives on your device and works without a connection. Turn on iCloud sync during setup to keep them in your own private iCloud database, which HELM Coders can’t access.
- Saved on your device firstEvery dive is saved locally first, so logging works offline on a boat, a beach or an island.
- Optional private iCloud syncChoose iCloud or this device during setup. In this version, storage is chosen once and can’t be switched later.
- No account, ads or trackingNo HELM Coders account, advertising, analytics or tracking.
- Area search, not your locationTyping an area name sends that text to Apple Maps to find it. Diver’s Log never asks for or uses your location.
- Photos stay in PhotosLinked photos and videos stay in your Photos library. Diver’s Log keeps a reference, not a copy.
- Export on your termsA full JSON backup includes everything. The CSV dive summary leaves out private notes, signatures and certification numbers.
Screenshots
Every screen, from the real app.
Captured from Diver’s Log with a fictional sample logbook.
One app, every screen
Made for each Apple device.
One purchase covers iPhone, iPad, Mac, Apple TV and Apple Vision Pro. The Apple Watch app comes with the iPhone app.
iPhone
iOS 18 or laterFull appLog, edit and browse your dives anywhere, with or without a connection.
iPad
iPadOS 18 or laterFull appA roomier layout for logging and reviewing dives.
iPhone Duo
iOS 18 or laterFull appThe phone layout when folded and an iPad-style adaptive layout when unfolded.
Mac
macOS 15 or laterFull appA desktop logbook with menu commands and keyboard shortcuts for new dives, export and navigation.
Apple Vision Pro
visionOS 2 or laterFull appLog, browse and edit your dives in a window in your space.
Apple TV
tvOS 18 or laterView onlyYour Dashboard, Logbook and dive details from iCloud on the big screen, with private notes hidden.
Apple Watch
watchOS 11 or laterSummaryA summary sent from your iPhone: your last dive, totals, deepest dive and next milestone.
- Apple TV shows the dives you sync through iCloud from your other devices. It can’t add or edit dives.
- Apple Watch shows a summary from your paired iPhone and doesn’t add dives.
- Photo and video linking is available on iPhone, iPad, Mac and Apple Vision Pro.
- The app is available in English and Spanish.
iPhone Duo
Ready for iPhone Duo, folded or unfolded.
Diver’s Log lays itself out for the screen you’re using, so iPhone Duo gets the right layout either way.
FoldedThe same phone layout as iPhone.
UnfoldedAn iPad-style adaptive layout with room to spread out.
Pricing
One purchase. Every device.
Diver’s Log is paid up front. Buy it once and every feature is yours on every supported device.
Paid up frontOne universal purchase for iPhone, iPad, Mac, Apple TV and Apple Vision Pro. The App Store will show the price in your currency at launch.
- No subscription
- No in-app purchases
- No ads
- No account
FAQ
Questions, answered.
Is Diver’s Log a dive computer?
No. Diver’s Log is a logbook. Its calculations are for education, historical reconstruction and logbook reference, and it does not replace formal dive planning with your training, tables or dive computer.
Which calculation methods are included?
The PADI Recreational Dive Planner (RDP), the PADI Wheel, PADI eRDPML, SSI Air/Nitrox tables, U.S. Navy air tables, and Bühlmann ZHL-16C with the gradient factors you choose.
Can I import dives from a dive computer?
Not in this version. You enter dives in the app; there is no dive-computer or file import.
Will my dives move over from the original Diver’s Log app?
No. Diver’s Log 2.0 is a new app and doesn’t import data from the original Diver’s Log app. You can enter earlier dives as historical dives.
Do I need iCloud?
No. You can keep your logbook on this device only, or choose private iCloud sync during setup to use it on your other Apple devices. The choice is made once and can’t be changed later in this version. Apple TV needs iCloud sync.
What does Apple TV show?
A read-only view of your Dashboard, Logbook and dive details, synced through iCloud. Notes, private notes, signatures and media aren’t shown on the TV.
Does Diver’s Log use my location?
No. When you type an area name, that text is sent to Apple Maps to find it. Diver’s Log never asks for your location.
What can I export?
A full JSON backup of every dive, calculation, verification, signature, certification and equipment record, and a CSV dive summary that leaves out private notes, signatures and certification numbers.
Does it work on iPhone Duo?
Yes. Folded, it uses the phone layout; unfolded, it uses an iPad-style adaptive layout.
Is there a subscription?
No. Diver’s Log is paid up front with one universal purchase. There are no subscriptions, in-app purchases or ads.
Is Diver’s Log available in Spanish?
Yes. The app is available in English and Spanish.
Support
Questions or problems? Tell us which device and version you’re using.
Get Diver’s Log support →Privacy
Local-first storage, optional private iCloud sync, and no ads or tracking.
Read the privacy policy →Age suitability
A general-audience dive logbook.
View age suitability →
Log the next dive. Keep every one before it.
Diver’s Log 2.0 is coming soon to the App Store for iPhone, iPad, Mac, Apple TV and Apple Vision Pro, with an Apple Watch companion.
Coming soon on theApp Store
PADI, SSI and other agency and product names are trademarks of their respective owners. Diver’s Log is an independent app and is not affiliated with or endorsed by any training agency. Diving involves inherent risk.