Hidden Lines: Climbing
Adam Pollard Health & Fitness iPhoneiPad
Hidden Lines: Climbing is a free Health & Fitness app for iPhone and iPad by Adam Pollard. Requires iOS 18.0. Updated April 9, 2026.
- Price
- Free
- on the App Store
- Size
- 13 MB
- Age 4+
- Updated
- Apr 9
- 2026 · v1.0
Screenshots
About Hidden Lines: Climbing
That moment on outdoor rock where you don't know if the problem goes. Where the beta isn't obvious and you aren't sure which foot to use. Hidden Lines brings that puzzle to your home wall. AI detects the holds. You choose the difficulty. The app generates a problem. And from there, it's on you. HOW IT WORKS 1. Select a photo Take a photo or choose an existing one of your home wall — woody, training board, spray wall, anything with holds. 2. Set up your wall AI detects the holds. You label them crimp, sloper, etc. You set the sit start reach and wall dimensions. 3. Generate and climb Pick a difficulty, choose which hold types to favour or avoid, toggle campus mode (or not). Then tap the sparkles to generate a problem. FEATURES - AI hold detection (no extra cost) - Problem generator with configuration options (difficulty, favor unused holds, etc...) - Adaptive Difficulty to fine-tune the problem generator to your wall and ability - Avoid or focus on specific hold types, e.g. avoiding crimps to rest a tweaked pulley - Create your own problems from scratch by tapping holds - Hold heat map: see which holds are overused and which are gathering dust - Rest timer (much needed when the psyche is high and you're giving send burns) - Compatible with all wall types (e.g. feet allowed on handholds vs dedicated footholds) - Save, manage, sort, and filter unlimited problems - Track favorites/projects and which problems you've sent - iPhone and iPad versions - iCloud sync across all your devices - Supports multiple walls - Light and dark themes + hold display customisation (color, wall dimming, etc...) PRICING No ads. No subscriptions. One purchase, for less than a coffee at the climbing gym. 14-day free trial.
App privacy
The developer, Adam Pollard, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Product Interaction
Used for: Analytics
Alternatives to Hidden Lines: Climbing
Looking for apps like Hidden Lines: Climbing? Here are 6 similar apps on the App Store. The highest rated is BackHug (4.9/5), and all 6 are free to download.
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Max Climbing Coaching app
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Bouldering AI: Coach
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Lekaos
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Lattice: Training for climbing
3.4
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BackHug
4.9
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CAROL Bike
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Hidden Lines: Climbing | – | Free | April 9, 2026 | |
| Max Climbing Coaching app | – | Free | Oct 2, 2026 | Compare |
| Bouldering AI: Coach | – | Free | Aug 10, 2026 | Compare |
| Lekaos | – | Free | Oct 21, 2026 | Compare |
| Lattice: Training for climbing | 3.4 / 5 (25) | Free | Oct 15, 2026 | Compare |
| BackHug | 4.9 / 5 (68) | Free | Jul 22, 2026 | Compare |
| CAROL Bike | – | Free | Apr 13, 2025 | Compare |