# DuoLens vs Unitloft

The clearest difference is price: DuoLens at Free against Unitloft's $2.99. Unitloft's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

DuoLens is free to download; Unitloft costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

DuoLens ships an update every 10 days, Unitloft fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | DuoLens | Unitloft |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Fortnightly |
| Size | 8 MB | 5 MB |
| Requires iOS | 17.4 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [明伟 陈](https://appshunter.io/developer/726238814) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### DuoLens

[App page](https://appshunter.io/ios/app/duolens-front-and-back-camera/id1579235028)

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

**In-app purchases:** none


### Unitloft

[App page](https://appshunter.io/ios/app/unitloft-unit-converter/id6776189469)

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

**In-app purchases:** none


## Frequently asked questions

### Is DuoLens free?

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

### Is Unitloft free?

Unitloft costs $2.99, with no in-app purchases.

### Do DuoLens or Unitloft have ads?

DuoLens shows ads; Unitloft does not.

### Which is updated more often, DuoLens or Unitloft?

DuoLens ships an update every 10 days, and Unitloft fortnightly. Most recently, DuoLens was updated on November 3, 2026 and Unitloft on October 31, 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.*