# ISDA E vs Divemates

The clearest difference is update cadence: Divemates at every 2 days against ISDA E's every 3 months. ISDA E's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 17.0). On price, ads and in-app purchases there is nothing between them.

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

ISDA E ships an update every 3 months, Divemates every 2 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ISDA E | Divemates |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/divemates-scuba-dive-log/id6784760495/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 70 MB | 41 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mario Perricone](https://appshunter.io/developer/1523501305) | [Divemates LLC](https://appshunter.io/developer/6784760497) |

## What reviewers say

### ISDA E

[App page](https://appshunter.io/ios/app/isda-e-learning/id1608171494)

**Features:** macOS Compatibility

**In-app purchases:** none


### Divemates

[App page](https://appshunter.io/ios/app/divemates-scuba-dive-log/id6784760495)

Log your dives, track marine life, and discover dive sites worldwide. This app helps you keep a digital record of your diving history, connect with fellow divers, and manage your certifications. It's designed to be used offline, ensuring you can log every experience, even without a signal.

**Highlights:** Offline dive logging, Marine life catalog, Dive site discovery, Buddy tracking, Digital dive certifications, Logbook import

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is ISDA E free?

ISDA E is free to download, with no in-app purchases.

### Is Divemates free?

Divemates is free to download, with no in-app purchases.

### Do ISDA E or Divemates have ads?

Neither ISDA E nor Divemates shows ads.

### Which is updated more often, ISDA E or Divemates?

ISDA E ships an update every 3 months, and Divemates every 2 days. Most recently, ISDA E was updated on October 25, 2026 and Divemates on October 31, 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.*