Comparison

DeeperBlue.com 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

DeeperBlue.com

Stay informed about freediving, scuba diving, ocean advocacy, and diving travel with daily news, in-depth articles, and unbiased reviews. Access ultimate guides, watch videos, and engage with a passionate community.

Highlights
  • Daily diving journalism
  • Live news notifications
  • In-depth feature articles
  • Ultimate diving guides
  • Video of the Week
  • Community comments and sharing
  • Searchable archives
Features
Read full description

Get the latest breaking news daily, comprehensive in-depth articles, unbiased reviews, and regular features on Freediving, Scuba Diving, Ocean Advocacy, and Diving Travel via the official DeeperBlue.com app. DeeperBlue.com is one of the premier online destinations for divers. Founded in 1996 we have a thriving community built around those passionate about the underwater world. DeeperBlue.com is far more than just a simple dive blog or forum – the site has strong editorial feature articles, daily news on diving, a thriving forum, user-submitted photo galleries, and a global social media presence. Some features of the new DeeperBlue.com App are: • Access the full range of daily DeeperBlue.com diving journalism, specially designed for your iPhone or iPad • Stay up to date with live news with notifications • In-depth features covering Freediving, Scuba Diving, Ocean Advocacy, and Diving Travel • Check out our ultimate guides to diving including our Beginner Guides and Top Dive Sites of the World • Watch our Video of the Week directly in the app. • Receive notifications and alerts to stay informed on the underwater world • Choose what you are interested in • Read comments on articles and share your own thoughts • Share stories by email, Whatsapp, and your favorite social media app • Search our extensive archives directly in the app. This app is totally free to download and use.

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

DeeperBlue.com4 screens
Scuba Dive Signals4 screens

Verdict

The call

The clearest difference is update cadence: DeeperBlue.com at every 3 months against Scuba Dive Signals's every 42 months. DeeperBlue.com also leads on ratings volume (61 vs 3) and iOS requirement (11.0 vs 15.0). Scuba Dive Signals's advantage is rating (5.0 vs 4.8). On price, review sentiment, ads and in-app purchases 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 4.8. That said, the two scores are not equally well evidenced: DeeperBlue.com has 61 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

DeeperBlue.com ships an update every 3 months, Scuba Dive Signals every 42 months. The most recent releases landed on September 20, 2026 and October 8, 2026 respectively.

Scorecard4 real differences · 6 level
DeeperBlue.com versus Scuba Dive Signals: the parameters behind the verdict, then further details
ParameterDeeperBlue.comScuba Dive Signals
PriceFreeFree
Rating4.8 (61 ratings)5.0 (3 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings61 — better3
Update frequencyEvery 3 months — betterEvery 42 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.0
Further details — not scored
Size34 MB3 MB
Age rating17+4+
DeveloperDeeperBlue.comEric Hamiter

Customer experience

DeeperBlue.com

All ratings61 ratings
Positive98.4%
Neutral0.0%
Negative1.6%
Written reviews8 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

DeeperBlue.com

No in-app purchases

None

Scuba Dive Signals

No in-app purchases

Questions

Is DeeperBlue.com free?
DeeperBlue.com 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, DeeperBlue.com or Scuba Dive Signals?
Scuba Dive Signals is rated higher. DeeperBlue.com averages 4.8 out of 5 from 61 ratings, while Scuba Dive Signals averages 5.0 from 3 ratings.
Do DeeperBlue.com or Scuba Dive Signals have ads?
Neither DeeperBlue.com nor Scuba Dive Signals shows ads.
Which is updated more often, DeeperBlue.com or Scuba Dive Signals?
DeeperBlue.com ships an update every 3 months, and Scuba Dive Signals every 42 months. Most recently, DeeperBlue.com was updated on September 20, 2026 and Scuba Dive Signals on October 8, 2026.

Other comparisons