# Loopworks Measure vs Letter Setter

The clearest difference is review sentiment: Letter Setter at 100% against Loopworks Measure's 0%. Letter Setter also leads on iOS requirement (13.0 vs 15.0). Loopworks Measure's advantage is update cadence (every 3 months vs every 34 months). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Loopworks Measure ships an update every 3 months, Letter Setter every 34 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Loopworks Measure | Letter Setter |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 34 months |
| Monetization | Free | Free |
| Size | 9 MB | 68 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ampetronic Ltd.](https://appshunter.io/developer/1001040998) | [Mark Mainwood](https://appshunter.io/developer/769006329) |

## What reviewers say

### Loopworks Measure

[App page](https://appshunter.io/ios/app/loopworks-measure/id1001040999)

This app, paired with specific hardware, functions as a professional field strength meter for designing and assessing hearing loop systems. It measures magnetic field strength, background noise, and frequency response, allowing users to generate technical and certification reports.

**Highlights:** Field strength measurement, Background noise analysis, Frequency response testing, Data synchronization with online portal, Technical and certification report generation, Walk-through guides for site assessment

**Features:** Vision Pro support

**In-app purchases:** none


### Letter Setter

[App page](https://appshunter.io/ios/app/letter-setter/id1465817094)

This utility helps crossword and anagram enthusiasts by providing a space to arrange letters and word structures. Users can lock known letters, create placeholders, and shuffle tiles to aid in solving puzzles.

**Highlights:** Arrange and move letter tiles, Lock known letters in place, Create and update placeholder tiles, Shuffle letter tiles for inspiration, Create multiple working pages, Add or remove word breaks

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Loopworks Measure free?

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

### Is Letter Setter free?

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

### Do Loopworks Measure or Letter Setter have ads?

Neither Loopworks Measure nor Letter Setter shows ads.

### Which is updated more often, Loopworks Measure or Letter Setter?

Loopworks Measure ships an update every 3 months, and Letter Setter every 34 months. Most recently, Loopworks Measure was updated on October 24, 2026 and Letter Setter on October 24, 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.*