Frez: Isometric Training
formerly ClimbHarder
Free · In‑App Purchases · Designed for iPad
Frez (formerly ClimbHarder): Train Without Moving. Improve With Data.
Frez helps you train smarter with isometric workouts. Whether you’re a climber, athlete, Frez gives you real-time feedback and structured routines based on your performance.
Real-time Force Tracking
• Visualize your force output live through Bluetooth-connected crane scales. Know exactly how hard you’re pulling — and how long you can hold it.
Peak & Endurance Tests
• Measure your Maximum Voluntary Contraction (MVC) or hold a force over time. Frez records every detail, so you can track your gains and compare sessions.
Custom Routines
• Build and follow your own isometric training routines — with full control over reps, sets, rest time, and target force.
Offline Mode
• No signal in the gym? No problem. Frez works even when you’re offline.
Frez supports your strength journey — one pull at a time.
= Frez service access permissions
Frez uses minimal device permissions, and we'll explain why.
= [Optional] Bluetooth permissions
We need Bluetooth permissions to connect with force measurement devices.
Subscription Terms:
Payment will be charged to the credit card connected to your Apple account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24 hours before the end of the current subscription period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the cost of the renewal will be identified. You may manage your subscription and turn off auto-renewal by going to your Account Settings after the purchase. Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Read more about our terms and conditions here:
Privacy Policy: https://frez.app/privacy
Terms of Service: https://frez.app/terms
[New Features]
* Train based on your weaker or stronger side
* Helps reduce left/right imbalance
* Save perceived exertion
* Track and manage your condition
[Improvements]
* Improved performance during long sessions
* Improved session creation experience
The developer, Donghyun Kim, 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 Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Contact Info
- User Content
- Identifiers
- Other Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Donghyun Kim
- Size
- 109.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 14.0 or later.
- iPhone
Requires iOS 14.0 or later. - iPad
Requires iPadOS 14.0 or later. - iPod touch
Requires iOS 14.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- Languages
English and 10 more
- English, Czech, Dutch, French, German, Italian, Korean, Norwegian Bokmål, Polish, Simplified Chinese, Spanish
- Age Rating
9+
- 9+
- Contains
User-Generated Content
Health or Wellness Topics
- In-App Purchases
Yes
- Training Tools (Monthly) $4.99
- Training Tools (Yearly) $29.99
- Training Tools (Monthly) $3.99
- ClimbHarder Training Tools $89.99
- Training Tools (Yearly) $29.99
- Training Tools (Monthly) $3.99
- Training Tools (Yearly) $24.99
- ClimbHarder Training Tools $39.99
- ClimbHarder Premium (Yearly) $23.99
- ClimbHarder Training Tools $29.99
- Copyright
- © 2025 Frez