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Press Kit

Cruxscale

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 c…

App icon

Cruxscale app icon

Direct link: https://obelisk.club/apps/climbingroutegrader/icon.png

Theme color: #F0EEE9

Boilerplate description

Use any portion freely. For coverage assistance, email below.

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.

Key features

  • Instant conversion across YDS, French, UIAA, British, Ewbank, Saxon, V-Scale, and Fontainebleau

  • Route log with crag, wall, and setter details

  • Consensus grading from multiple climbers' felt-grade feedback

  • CSV export and shareable grade cards

  • Fully offline: no account, no tracking, no network access

Download links

Founder quote

“Cruxscaleis built around one principle: your data stays on your device. We don't want it, we don't store it, and we don't need it to make the app work. Everything that can run locally, does.”
— Peter Zhang, solo developer, Obelisk Club

About Obelisk Club

Obelisk Club is a portfolio of focused, local-first Mac and iOS productivity apps built by a solo developer. The portfolio includes 13 apps spanning note-taking, screenshots, photo workflow, beverage tracking, file compression, and more — all sharing a single principle: software that works without an account, without a cloud, and without a subscription.

Press contact

obeliskclubclub@gmail.com

https://obelisk.club

Happy to share a complimentary Pro promo code, schedule a Q&A, or provide additional materials. Typical response within 24 hours.

Quick facts

App name
Cruxscale
Maker
Peter Zhang · Obelisk Club
Theme color
#F0EEE9
Contact
obeliskclubclub@gmail.com