# BB Arena vs Martin's Training Diary

The clearest difference is in-app purchases: BB Arena at none against Martin's Training Diary's 2. BB Arena also leads on iOS requirement (9.3 vs 15.1). Martin's Training Diary's advantage is update cadence (daily vs every 12 months). On price, ads and device support there is nothing between them.

Both are free to download. Martin's Training Diary sells 2 in-app purchases, starting at $4.99 per month. BB Arena asks for nothing beyond the download.

BB Arena ships an update every 12 months, Martin's Training Diary daily. The most recent releases landed on October 14, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | BB Arena | Martin's Training Diary |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Daily** |
| Monetization | Free | — |
| Size | 35 MB | 57 MB |
| Requires iOS | **9.3** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [INSPIRE CZ](https://appshunter.io/developer/582633229) | [Martin Vitek](https://appshunter.io/developer/1887369799) |

## What reviewers say

### BB Arena

[App page](https://appshunter.io/ios/app/bb-arena/id1531862899)

This app is a multifunctional sports center located in Prague, offering a wide range of activities for all ages and abilities. It provides various sports facilities for professional athletes, families, seniors, and individuals with disabilities.

**Highlights:** Multifunctional sports center, Activities for all ages and abilities, Badminton courts, Tennis courts, Table tennis, Parkour facilities

**Features:** macOS Compatibility

**In-app purchases:** none


### Martin's Training Diary

[App page](https://appshunter.io/ios/app/martins-training-diary/id6761027067)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | per month |
| Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is BB Arena free?

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

### Is Martin's Training Diary free?

Martin's Training Diary is free to download, with in-app purchases available.

### Do BB Arena or Martin's Training Diary have ads?

Neither BB Arena nor Martin's Training Diary shows ads.

### Which is updated more often, BB Arena or Martin's Training Diary?

BB Arena ships an update every 12 months, and Martin's Training Diary daily. Most recently, BB Arena was updated on October 14, 2026 and Martin's Training Diary on October 28, 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.*