# IDF vs Big Wall

The clearest difference is update cadence: IDF at every 6 weeks against Big Wall's every 12 months. On price, ads, in-app purchases and device support there is nothing between them.

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

IDF ships an update every 6 weeks, Big Wall every 12 months. The most recent releases landed on October 3, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | IDF | Big Wall |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 12 months |
| Size | 8 MB | 26 MB |
| Requires iOS | 13.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [International Diving Federation sp. z o.o.](https://appshunter.io/developer/1788336335) | [GYMMANAGER SP Z O O](https://appshunter.io/developer/966545442) |

## What reviewers say

### IDF

[App page](https://appshunter.io/ios/app/idf/id6740090312)

**Features:** macOS Compatibility

**In-app purchases:** none


### Big Wall

[App page](https://appshunter.io/ios/app/big-wall/id6741472829)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IDF free?

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

### Is Big Wall free?

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

### Do IDF or Big Wall have ads?

Neither IDF nor Big Wall shows ads.

### Which is updated more often, IDF or Big Wall?

IDF ships an update every 6 weeks, and Big Wall every 12 months. Most recently, IDF was updated on October 3, 2026 and Big Wall on October 4, 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.*