# Proof Recorder vs Unitloft

The clearest difference is price: Proof Recorder 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.

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

Proof Recorder ships an update every 10 days, Unitloft fortnightly. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Proof Recorder | Unitloft |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Fortnightly |
| Size | 12 MB | 5 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Saturn Studio](https://appshunter.io/developer/1491356325) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### Proof Recorder

[App page](https://appshunter.io/ios/app/proof-recorder-save-and-email/id6761300996)

**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 Proof Recorder free?

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

### Is Unitloft free?

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

### Do Proof Recorder or Unitloft have ads?

Proof Recorder shows ads; Unitloft does not.

### Which is updated more often, Proof Recorder or Unitloft?

Proof Recorder ships an update every 10 days, and Unitloft fortnightly. Most recently, Proof Recorder was updated on October 28, 2026 and Unitloft on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*