Comparison

Scuba Calendar vs Shipwreck Map

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

Head to head
About

Scuba Calendar

Plan your scuba diving trips by identifying the best times and locations to see specific marine animals. Log your sightings, report on environmental conditions, and connect with other divers globally. Enhance your knowledge of marine life and contribute to conservation efforts.

Highlights
  • Search for marine animals by month and region
  • Country-specific diving information and regulations
  • Log personal marine wildlife sightings on a map
  • Report environmental issues at dive sites
  • Connect with other divers and share experiences
  • Learn facts about marine animals
  • Contribute to marine conservation awareness
Features
Read full description

Scuba Calendar helps you plan your scuba diving vacation based on the time of year, and the marine wildlife you'd like to see. It also inspires conservation, by informing us about the wonders of the marine world and how we, as divers, can help protect the sea and engage in citizen science. Currently, you can search for more than 30 animals, in over 400 locations, across 70 countries. The information about sighting areas and wildlife is focusing only on the peak period for each scuba diving location. Though it is impossible to predict sightings with complete accuracy, our aim is to maximize your chances. We are constantly enlarging and fine-tuning the database. Key Features: SEARCH Select an animal you wish to see. You can also add a month and/or region. The app then determines the geographic locations where the chosen marine life can most likely be spotted. COUNTRY PAGE Once you select a desired country, the Country Page shows the types and locations of other marine life likely to be spotted in that country. The page also includes valuable information like local diving regulations, environmental sustainability recommendations, a list of hyperbaric chambers and more. MY MAP Keep track of your marine wildlife experiences on your own personal map. Add your sightings by selecting an animal, time of year and country. Take the opportunity to report on the environmental situation at the dive site (e.g. marine debris, corals in distress, etc.). DIVERS CONNECTED Divers Connected serves as a social platform for divers all around the world to share their experiences publicly. Check what other divers are logging and participate in building a database of sightings, which could help marine scientists in their research. ANIMAL FACTS Written in a fun and easy to understand way, this section will increase your knowledge about marine animals. MARINE CONSERVATION Scuba Calendar helps to increase awareness about critical threats to oceans and their precious inhabitants. We hope it will inspire many of you to get involved in marine conservation! For scuba divers: • Find where and when to find your favorite animal • Browse applicable regulations and practical information about your selected country • Log your sightings on a map • Report environmental issues at dive sites • Check what other divers are reporting from around the world, or filter by country, wildlife or time of year • Help in creating a massive database of sightings • Improve your animal knowledge in a fun way For scientists: • Take advantage of the database of sightings created by recreational divers for your research and conservation efforts (to determine migratory routes, population sizes, reproductive ecology, etc.) • Use uploaded photos of animals to identify exact individuals in your databases • Follow reports of the environmental status of a dive site to track changes in sea conditions and the consequences for marine life • Encourage citizen science by sharing specific information about animals and guiding scuba divers to correctly identify the species they have seen For scuba travel agencies: • Instantly offer clients suggestions on when and where to go • Get access to trustworthy data about animal sightings to plan the perfect itinerary • Keep clients up to date with actual sightings in an area • Become a leader in sustainable tourism by following and recommending tips for sustainable diving

About

Shipwreck Map

Discover shipwreck locations and historical details across the USA. This app is perfect for maritime history enthusiasts, divers, and anyone interested in sunken vessels. No login is necessary to explore the data.

Highlights
  • Shipwreck locations
  • Historical wreck information
  • Maritime history focus
  • Scuba diving site data
  • Vessel tracking interest
  • No registration required
Features
Read full description

Shipwrecks near me: Find shipwreck locations and historical information about the wrecks. No registration or login required. Ideal for anyone interested in: - Maritime history - Scuba diving and dive sites - Shipping and vessel tracking - Salvage operations - Abandoned wrecks Data source: NOAA AWOIS, July 2020. Not to be used for navigation.

Screenshots

Scuba Calendar4 screens
Shipwreck Map4 screens

Verdict

The call

The clearest difference is price: Shipwreck Map at Free against Scuba Calendar's $4.99. Shipwreck Map also leads on update cadence (every 6 weeks vs every 7 months) and ratings volume (64 vs 1). Scuba Calendar's advantage is rating (5.0 vs 4.3) and in-app purchases (none vs 1). On ads, device support and iOS requirement 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

Shipwreck Map is free to download; Scuba Calendar costs $4.99 up front. Shipwreck Map sells 1 one-off in-app purchase. Scuba Calendar asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Scuba Calendar holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Shipwreck Map has 64 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Scuba Calendar ships an update every 7 months, Shipwreck Map every 6 weeks. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

Scorecard6 real differences · 4 level
Scuba Calendar versus Shipwreck Map: the parameters behind the verdict, then further details
ParameterScuba CalendarShipwreck Map
Price$4.99Free — better
Rating5.0 (1 ratings) — better4.3 (64 ratings)
Positive reviews—42.9% of reviews
Number of ratings164 — better
Update frequencyEvery 7 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better18.0
Further details — not scored
Size57 MB26 MB
Age rating4+4+
DeveloperKatarina Grgas BrusQvyshift LLC

Customer experience

Scuba Calendar

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Shipwreck Map

All ratings63 ratings
Positive85.7%
Neutral1.6%
Negative12.7%
Written reviews7 reviews
Positive42.9%
Neutral0.0%
Negative57.1%

In-app purchases

None

Scuba Calendar

No in-app purchases

1 purchases

Shipwreck Map

One-time1
  • Upgrade$7.99

Questions

Is Scuba Calendar free?
Scuba Calendar costs $4.99, with no in-app purchases.
Is Shipwreck Map free?
Shipwreck Map is free to download, with in-app purchases available.
Which has better reviews, Scuba Calendar or Shipwreck Map?
Scuba Calendar is rated higher. Scuba Calendar averages 5.0 out of 5 from 1 ratings, while Shipwreck Map averages 4.3 from 64 ratings.
Do Scuba Calendar or Shipwreck Map have ads?
Neither Scuba Calendar nor Shipwreck Map shows ads.
Which is updated more often, Scuba Calendar or Shipwreck Map?
Scuba Calendar ships an update every 7 months, and Shipwreck Map every 6 weeks. Most recently, Scuba Calendar was updated on November 4, 2026 and Shipwreck Map on November 3, 2026.

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