# ATAS Cloud Telephony vs Lens Smudge Detection

The clearest difference is ads: ATAS Cloud Telephony at none against Lens Smudge Detection's shown. ATAS Cloud Telephony also leads on iOS requirement (16.0 vs 26.5). Lens Smudge Detection's advantage is update cadence (weekly vs every 4 months). On price, 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.

ATAS Cloud Telephony ships an update every 4 months, Lens Smudge Detection weekly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ATAS Cloud Telephony | Lens Smudge Detection |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Size | 108 MB | 42 MB |
| Requires iOS | **16.0** | 26.5 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Trisilco Radiance Communications Sdn Bhd](https://appshunter.io/developer/1700268439) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### ATAS Cloud Telephony

[App page](https://appshunter.io/ios/app/atas-cloud-telephony/id6456040211)

**In-app purchases:** none


### Lens Smudge Detection

[App page](https://appshunter.io/ios/app/lens-smudge-detection/id6771600873)

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

**In-app purchases:** none


## Frequently asked questions

### Is ATAS Cloud Telephony free?

ATAS Cloud Telephony is free to download, with no in-app purchases.

### Is Lens Smudge Detection free?

Lens Smudge Detection is free to download, with no in-app purchases.

### Do ATAS Cloud Telephony or Lens Smudge Detection have ads?

Lens Smudge Detection shows ads; ATAS Cloud Telephony does not.

### Which is updated more often, ATAS Cloud Telephony or Lens Smudge Detection?

ATAS Cloud Telephony ships an update every 4 months, and Lens Smudge Detection weekly. Most recently, ATAS Cloud Telephony was updated on October 27, 2026 and Lens Smudge Detection on October 25, 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.*