# RepeaterBook vs Thread Length Calculator

The clearest difference is rating: Thread Length Calculator at 5.0 against RepeaterBook's 4.2. Thread Length Calculator also leads on in-app purchases (none vs 1) and review sentiment (100% vs 67%). RepeaterBook's advantage is ratings volume (246 vs 3). On price, update cadence, ads and monetization model there is nothing between them.

Both are free to download. RepeaterBook sells 1 in-app purchase, starting at $14.99 per year. Thread Length Calculator asks for nothing beyond the download.

Thread Length Calculator holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: RepeaterBook has 246 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 67% of RepeaterBook's written reviews are positive against 100% of Thread Length Calculator's.

RepeaterBook ships an update every 3 weeks, Thread Length Calculator every 10 days. The most recent releases landed on October 19, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | RepeaterBook | Thread Length Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (246 ratings)](https://appshunter.io/ios/app/repeaterbook/id606820166/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/thread-length-calculator/id6458585044/reviews)** |
| Number of ratings | **246** | 3 |
| Positive reviews | 67.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free | Free |
| Size | 50 MB | 11 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nicolas Associates Ltd](https://appshunter.io/developer/606820189) | [Nigel Armitage](https://appshunter.io/developer/1834117685) |

## What reviewers say

### RepeaterBook

[App page](https://appshunter.io/ios/app/repeaterbook/id606820166)

Access a comprehensive, offline directory of amateur radio repeaters worldwide. Search by various criteria, view detailed information including distance and bearing, and easily submit updates. Optimized for both phones and tablets.

**Highlights:** Offline repeater directory, Worldwide coverage, Comprehensive search options, Distance and bearing display, Submit updates, Portrait/Landscape views

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access | $14.99 | per year |

**What reviewers like**

- 🚀 Fast and efficient repeater search functionality
- 📱 Works offline with downloaded database
- 🗺️ Location-based repeater discovery
- 👍 Free application with no cost
- 🔄 Regular database updates maintained

**What reviewers complain about**

- 🐛 Location detection issues and inaccuracies
- ❌ Missing repeaters in database
- 📱 iOS version has more issues than Android
- 🔍 Inconsistent data between app and website
- ❓ Confusing interface for new users

**Reported bugs**

- Location services showing repeaters hundreds of miles away
- App not displaying any repeaters despite correct filters
- iOS version showing incorrect frequency data
- Recent update losing user data and settings
- Location feature not finding nearby repeaters

**Requested features**

- Map display of repeater locations
- Field name labels for repeater details
- Coverage range information for repeaters
- GMRS channel display alongside frequency
- Dark mode support


### Thread Length Calculator

[App page](https://appshunter.io/ios/app/thread-length-calculator/id6458585044)

This free tool helps leatherworkers accurately calculate the thread length required for their projects. It accounts for the number of holes, stitching length, and leather thickness, ensuring you always have enough material.

**Highlights:** Thread length calculation, Supports any number of holes, Accounts for stitching length, Considers leather thickness, Free to use

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

**In-app purchases:** none


## Frequently asked questions

### Is RepeaterBook free?

RepeaterBook is free to download, with in-app purchases available.

### Is Thread Length Calculator free?

Thread Length Calculator is free to download, with no in-app purchases.

### Which has better reviews, RepeaterBook or Thread Length Calculator?

Thread Length Calculator is rated higher. RepeaterBook averages 4.2 out of 5 from 246 ratings, while Thread Length Calculator averages 5.0 from 3 ratings.

### Do RepeaterBook or Thread Length Calculator have ads?

Neither RepeaterBook nor Thread Length Calculator shows ads.

### Which is updated more often, RepeaterBook or Thread Length Calculator?

RepeaterBook ships an update every 3 weeks, and Thread Length Calculator every 10 days. Most recently, RepeaterBook was updated on October 19, 2026 and Thread Length Calculator on September 30, 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.*