# b vs AceiiLab

The clearest difference is in-app purchases: AceiiLab at none against b's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. b sells 2 in-app purchases, starting at $3.99 per month. AceiiLab asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | b | AceiiLab |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/aceiilab/id6789068785/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | — | Free |
| Size | 71 MB | 118 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [b-tastic sports GmbH](https://appshunter.io/developer/1560996847) | [一思(深圳)人工智能有限公司](https://appshunter.io/developer/1831256217) |

## What reviewers say

### b

[App page](https://appshunter.io/ios/app/b-tastic/id1560996514)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Highlight | $3.99 | per month |
| BRONDS Monthly | $8.99 | per month |


### AceiiLab

[App page](https://appshunter.io/ios/app/aceiilab/id6789068785)

Control a tennis robot to practice serves, volleys, and custom drills. Track your training data in real-time without a partner. Ideal for solo tennis practice at home or on the court.

**Highlights:** Bluetooth robot control, Adjust serve speed and spin, Preset training modes, Custom training schemes, Real-time stroke data recording, Solo practice capabilities

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

**In-app purchases:** none


## Frequently asked questions

### Is b free?

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

### Is AceiiLab free?

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

### Do b or AceiiLab have ads?

Neither b nor AceiiLab shows ads.

### Which is updated more often, b or AceiiLab?

b ships an update every 2 weeks, and AceiiLab every 2 weeks. Most recently, b was updated on October 7, 2026 and AceiiLab on October 9, 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.*