# Cattani SmartLog vs Dr.Clear Aligner

The clearest difference is update cadence: Dr.Clear Aligner at every 3 weeks against Cattani SmartLog's every 13 months. Dr.Clear Aligner also leads on iOS requirement (9.0 vs 16.6). 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.

Cattani SmartLog ships an update every 13 months, Dr.Clear Aligner every 3 weeks. The most recent releases landed on September 17, 2026 and June 11, 2026 respectively.

## The numbers

| Metric | Cattani SmartLog | Dr.Clear Aligner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 3 weeks** |
| Size | 38 MB | 73 MB |
| Requires iOS | 16.6 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cattani S.p.A.](https://appshunter.io/developer/1105335182) | [Clear Medical Technology Co. Ltd](https://appshunter.io/developer/1447603334) |

## What reviewers say

### Cattani SmartLog

[App page](https://appshunter.io/ios/app/cattani-smartlog/id1235666994)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dr.Clear Aligner

[App page](https://appshunter.io/ios/app/drclear-aligner/id1544211178)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cattani SmartLog free?

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

### Is Dr.Clear Aligner free?

Dr.Clear Aligner is free to download, with no in-app purchases.

### Do Cattani SmartLog or Dr.Clear Aligner have ads?

Neither Cattani SmartLog nor Dr.Clear Aligner shows ads.

### Which is updated more often, Cattani SmartLog or Dr.Clear Aligner?

Cattani SmartLog ships an update every 13 months, and Dr.Clear Aligner every 3 weeks. Most recently, Cattani SmartLog was updated on September 17, 2026 and Dr.Clear Aligner on June 11, 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.*