# TTC_BLE vs Crystal

The clearest difference is update cadence: Crystal at every 3 weeks against TTC_BLE's every 2 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.

TTC_BLE ships an update every 2 months, Crystal every 3 weeks. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | TTC_BLE | Crystal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 3 MB | 41 MB |
| Requires iOS | 9.0 | 9.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tuner168 Technology Co.,ltd](https://appshunter.io/developer/895327215) | [上海永力信息科技有限公司](https://appshunter.io/developer/1348509026) |

## What reviewers say

### TTC_BLE

[App page](https://appshunter.io/ios/app/ttc-ble/id984758278)

**Features:** macOS Compatibility

**In-app purchases:** none


### Crystal

[App page](https://appshunter.io/ios/app/crystal/id6448982908)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TTC_BLE free?

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

### Is Crystal free?

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

### Do TTC_BLE or Crystal have ads?

Neither TTC_BLE nor Crystal shows ads.

### Which is updated more often, TTC_BLE or Crystal?

TTC_BLE ships an update every 2 months, and Crystal every 3 weeks. Most recently, TTC_BLE was updated on September 28, 2026 and Crystal on October 5, 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.*