# QuadroDUS vs TDB Cep

The clearest difference is update cadence: QuadroDUS at weekly against TDB Cep's every 2 months. QuadroDUS also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.6). On price, ads and in-app purchases there is nothing between them.

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

QuadroDUS ships an update weekly, TDB Cep every 2 months. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | QuadroDUS | TDB Cep |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Size | 40 MB | 41 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TUSDATA Anonim Sirketi](https://appshunter.io/developer/483455635) | [Türk Dişhekimleri Birliği](https://appshunter.io/developer/1838675463) |

## What reviewers say

### QuadroDUS

[App page](https://appshunter.io/ios/app/quadrodus/id1667848067)

**Features:** macOS Compatibility

**In-app purchases:** none


### TDB Cep

[App page](https://appshunter.io/ios/app/tdb-cep/id6746549388)

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

**In-app purchases:** none


## Frequently asked questions

### Is QuadroDUS free?

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

### Is TDB Cep free?

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

### Do QuadroDUS or TDB Cep have ads?

Neither QuadroDUS nor TDB Cep shows ads.

### Which is updated more often, QuadroDUS or TDB Cep?

QuadroDUS ships an update weekly, and TDB Cep every 2 months. Most recently, QuadroDUS was updated on October 14, 2026 and TDB Cep on October 16, 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.*