Cruxscale: Grade Converter
Consensus Grading & Log
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Cruxscale converts climbing grades between six roped systems (YDS, French, UIAA, British, Ewbank, Saxon) and two bouldering systems (V-Scale, Fontainebleau) instantly, fully offline, with no account required.
Beyond conversion, Cruxscale is built for route setters and climbing crews: log every route or problem you set, collect felt-grade feedback from climbers, and see a consensus grade calculated automatically from the group's input. No more guessing whether a 5.10a really climbs like a 5.10a.
FEATURES
- Instant multi-system grade conversion for routes and boulders
- Route log with crag, wall, and setter details
- Consensus grading from multiple climbers' felt grades
- Export your route log as CSV or share a grade card
- Fully offline: no account, no tracking, no network access
Whether you're cross-referencing a guidebook, setting for a gym, or gathering feedback from your crew, Cruxscale gives you a fast, honest picture of how hard a climb really is.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, 永 张, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- 永 张
- Size
- 709.6 KB
- Category
- Utilities
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Cruxscale Pro $4.99
- Copyright
- Copyright © 2026 Peter Zhang. All rights reserved.