# IDEF 2025 vs ThrusterLog

The clearest difference is in-app purchases: IDEF 2025 at none against ThrusterLog's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ThrusterLog sells 3 in-app purchases, starting at $4.99 per 7 days. IDEF 2025 asks for nothing beyond the download.

IDEF 2025 ships an update every 3 days, ThrusterLog every 5 days. The most recent releases landed on October 16, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | IDEF 2025 | ThrusterLog |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 5 days |
| Size | 26 MB | 20 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Türk Silahlı Kuvvetlerini Güçlendirme Vakfı](https://appshunter.io/developer/1813354966) | [Kutu Studio](https://appshunter.io/developer/1838157554) |

## What reviewers say

### IDEF 2025

[App page](https://appshunter.io/ios/app/idef-2025/id6745690320)

**Features:** macOS Compatibility

**In-app purchases:** none


### ThrusterLog

[App page](https://appshunter.io/ios/app/thrusterlog-rov-dive-log/id6760548331)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThrusterLog Pro Weekly | $4.99 | per 7 days |
| ThrusterLog Pro Monthly | $14.99 | per month |
| ThrusterLog Pro Yearly | $99.99 | per year |


## Frequently asked questions

### Is IDEF 2025 free?

IDEF 2025 is free to download, with no in-app purchases.

### Is ThrusterLog free?

ThrusterLog is free to download, with in-app purchases available.

### Do IDEF 2025 or ThrusterLog have ads?

Neither IDEF 2025 nor ThrusterLog shows ads.

### Which is updated more often, IDEF 2025 or ThrusterLog?

IDEF 2025 ships an update every 3 days, and ThrusterLog every 5 days. Most recently, IDEF 2025 was updated on October 16, 2026 and ThrusterLog on October 25, 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.*