# Rock Climbing Grade Converter vs BoulderBot

The clearest difference is in-app purchases: Rock Climbing Grade Converter at none against BoulderBot's 3. Rock Climbing Grade Converter also leads on rating (4.8 vs 4.4) and review sentiment (100% vs 75%). BoulderBot's advantage is update cadence (every 2 months vs every 10 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. BoulderBot sells 3 one-off in-app purchases. Rock Climbing Grade Converter asks for nothing beyond the download.

Rock Climbing Grade Converter holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Rock Climbing Grade Converter has 140 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 100% of Rock Climbing Grade Converter's written reviews are positive against 75% of BoulderBot's.

Rock Climbing Grade Converter ships an update every 10 months, BoulderBot every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Rock Climbing Grade Converter | BoulderBot |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (140 ratings)](https://appshunter.io/ios/app/rock-climbing-grade-converter/id1250294132/reviews)** | [4.4 (11 ratings)](https://appshunter.io/ios/app/boulderbot/id1601111003/reviews) |
| Number of ratings | **140** | 11 |
| Positive reviews | **100.0% of reviews** | 75.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 119 MB | 68 MB |
| Requires iOS | **11.0** | 14.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Yuichi Fujiki](https://appshunter.io/developer/1093248731) | [Luca Dellana](https://appshunter.io/developer/1601111005) |

## What reviewers say

### Rock Climbing Grade Converter

[App page](https://appshunter.io/ios/app/rock-climbing-grade-converter/id1250294132)

Easily compare rock climbing grades across different international systems. Simply set your preferred systems and swipe to find equivalent grades for any climb.

**Highlights:** Compare international grade systems, Swipe to find equivalent grades, Customizable grade system setup, Lightweight and easy to use

**Features:** macOS Compatibility

**In-app purchases:** none


### BoulderBot

[App page](https://appshunter.io/ios/app/boulderbot/id1601111003)

Generate and track bouldering routes on your home climbing wall. Features procedural generation for infinite climb variations, manual creation, and progress logging. Supports various wall types and works offline.

**Highlights:** Procedural climb generation, Manual climb creation, Progress tracking and logging, Wall setup wizard, Offline functionality, Search and filter problems

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BoulderBot Pro Pass - 3 Months | $7.99 | one-time |
| BoulderBot Pro Pass - 1 Year | $17.99 | one-time |
| BoulderBot Pro | $27.99 | one-time |


## Frequently asked questions

### Is Rock Climbing Grade Converter free?

Rock Climbing Grade Converter is free to download, with no in-app purchases.

### Is BoulderBot free?

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

### Which has better reviews, Rock Climbing Grade Converter or BoulderBot?

Rock Climbing Grade Converter is rated higher. Rock Climbing Grade Converter averages 4.8 out of 5 from 140 ratings, while BoulderBot averages 4.4 from 11 ratings.

### Do Rock Climbing Grade Converter or BoulderBot have ads?

Neither Rock Climbing Grade Converter nor BoulderBot shows ads.

### Which is updated more often, Rock Climbing Grade Converter or BoulderBot?

Rock Climbing Grade Converter ships an update every 10 months, and BoulderBot every 2 months. Most recently, Rock Climbing Grade Converter was updated on November 2, 2026 and BoulderBot on November 3, 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.*