# Scuba Calendar vs Shipwreck Map

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.

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.

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.

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.

## The numbers

| Metric | Scuba Calendar | Shipwreck Map |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scuba-calendar/id1317670884/reviews)** | [4.3 (64 ratings)](https://appshunter.io/ios/app/shipwreck-map/id6444738339/reviews) |
| Number of ratings | 1 | **64** |
| Positive reviews | — | 42.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 57 MB | 26 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Katarina Grgas Brus](https://appshunter.io/developer/1317670883) | [Qvyshift LLC](https://appshunter.io/developer/1536442361) |

## What reviewers say

### Scuba Calendar

[App page](https://appshunter.io/ios/app/scuba-calendar/id1317670884)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Shipwreck Map

[App page](https://appshunter.io/ios/app/shipwreck-map/id6444738339)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $7.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*