Comparison

Dive Diary vs Scuba Dive Signals

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Dive Diary

This app serves as a digital logbook for scuba divers, allowing users to record their dives with a visually appealing, customizable interface. It supports unlimited photo and video attachments, cloud backup, and easy sharing of dive logs.

Highlights
  • Customizable logbook design
  • Unlimited photo/video attachments
  • Cloud backup and restore
  • Cross-device synchronization
  • Social media sharing
  • Import Suunto dive computer logs
  • Export logs to CSV
Features
Read full description

Dive Diary is a scuba diving log book application that looks like a real paper-based log book. Create your own stylish and emotional log book that is easy to use. Features • Full-view screen design and easy-to-use interface. • Provision of beautiful ocean scenery and moving fish images for designing your own log book. • You can attach an unlimited number of pictures/videos for each log. • You can very easily backup your log data to our server and restore it just with one touch. • You can keep same logs on all your iOS devices. • You can change the design of your logbook. Dive Diary support 6 color skins, 19 wallpapers, 17 diary inner pages. • You can share screenshot of your logbook to social network service like Facebook, Twitter and so on. • You can import logs in your dive computer through File Sharing of the iTunes. Currently, you can import only Suunto dive computer's logs that are exported as XML file through Suunto DM5. • You can export logs to a CSV format file.

About

Scuba Dive Signals

Access a comprehensive list of underwater hand signals for safe scuba diving communication. Includes a quiz feature to test your knowledge of signals recognized by major training agencies.

Highlights
  • List of recognized dive hand signals
  • Signals from PADI, NAUI, SSI
  • Quiz feature to test knowledge
  • Safety communication focus
  • Creative Commons licensed images
Features
Read full description

Access a handy list of dive signals to safely communicate underwater while scuba diving. This contains a list of hand signals generally recognized by the Recreational Scuba Training Council and its member agencies (PADI, NAUI, SSI, and more). Once you've studied up, you can quiz yourself on what you've learned-- the app will show a series of five dive signal descriptions and give you a choice of four different pictures-- only one will match, so choose wisely! As always, safety is paramount when scuba diving, so be sure you are your diving partners are clear on their meanings before diving. The author of this app does not assume and hereby disclaims any liability to any party for any loss, damage, or injury, including death, caused by errors or omissions, whether such errors or omissions result from negligence, accident, or any other cause. The information in this app is meant to supplement, not replace, proper scuba diving training. Scuba diving poses some inherent risk. Never dive without proper training and certification! The images used in this app are used via the Creative Commons Attribution-Share Alike licenses, and are credited as follows: Creative Commons Attribution-Share Alike 3.0 Unported license (https://creativecommons.org/licenses/by-sa/3.0/deed.en): Original author: Thomei08 Dive hand signal-cold.plain.svg Dive hand signal-look.plain.svg Dive hand signal-tink.plain.svg Dive hand signal-ear.plain.svg Original author: Peter Southwood Dive hand signal OK 1.png Dive hand signal OK 2.png Dive hand signal OK surface 1.png Dive hand signal OK surface 2.png Dive hand signal Stop.png Dive hand signal Turn Around.png Dive hand signal Which Way.png Dive hand signal Boat.png Dive hand signal Buddy up.png Dive hand signal Hold on to each other.png Dive hand signal Lead and follow.png Dive hand signal Level out.png Dive hand signal Slow down.png Dive hand signal Give me air.png Dive hand signal Emergency Out of air.png Dive hand signal Help surface 1.png Dive hand signal Dont know 1.png Dive hand signal Danger there.png Dive hand signal Pressure.png Dive hand signal Bubbles.png Dive hand signal Cut.png Dive hand signal Safety stop.png Dive hand signal Entangled.png Dive hand signal Silt.png Dive hand signal Cramps.png Dive hand signal Reserve.png Dive hand signal Time up.png Dive hand signal Fetch surface 1.png Dive hand signal Turn dive.png Dive hand signal Stuck.png Creative Commons Attribution-Share Alike 4.0 International license (https://creativecommons.org/licenses/by-sa/4.0/deed.en): Original author: Peter Southwood Dive hand signal Ascend to stop.png The licensors do not in any way endorse the author of this app or usage.

Screenshots

Dive Diary4 screens
Scuba Dive Signals4 screens

Verdict

The call

The clearest difference is rating: Scuba Dive Signals at 5.0 against Dive Diary's 4.0. Scuba Dive Signals also leads on review sentiment (100% vs 90%). Dive Diary's advantage is update cadence (every 2 months vs every 42 months) and ratings volume (19 vs 3). On price, ads, in-app purchases and monetization model 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Scuba Dive Signals holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Dive Diary has 19 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 90% of Dive Diary's written reviews are positive against 100% of Scuba Dive Signals's.

UpkeepUpdate frequency

Dive Diary ships an update every 2 months, Scuba Dive Signals every 42 months. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

Scorecard5 real differences · 5 level
Dive Diary versus Scuba Dive Signals: the parameters behind the verdict, then further details
ParameterDive DiaryScuba Dive Signals
PriceFreeFree
Rating4.0 (19 ratings)5.0 (3 ratings) — better
Positive reviews90.0% of reviews100.0% of reviews — better
Number of ratings19 — better3
Update frequencyEvery 2 months — betterEvery 42 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size25 MB3 MB
Age rating4+4+
DeveloperGoanmook ChoiEric Hamiter

Customer experience

Dive Diary

All ratings19 ratings
Positive78.9%
Neutral10.5%
Negative10.5%
Written reviews30 reviews
Positive90.0%
Neutral6.7%
Negative3.3%

Scuba Dive Signals

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Dive Diary

No in-app purchases

None

Scuba Dive Signals

No in-app purchases

Questions

Is Dive Diary free?
Dive Diary is free to download, with no in-app purchases.
Is Scuba Dive Signals free?
Scuba Dive Signals is free to download, with no in-app purchases.
Which has better reviews, Dive Diary or Scuba Dive Signals?
Scuba Dive Signals is rated higher. Dive Diary averages 4.0 out of 5 from 19 ratings, while Scuba Dive Signals averages 5.0 from 3 ratings.
Do Dive Diary or Scuba Dive Signals have ads?
Neither Dive Diary nor Scuba Dive Signals shows ads.
Which is updated more often, Dive Diary or Scuba Dive Signals?
Dive Diary ships an update every 2 months, and Scuba Dive Signals every 42 months. Most recently, Dive Diary was updated on September 18, 2026 and Scuba Dive Signals on September 21, 2026.

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