SpringRate: Suspension Calc
Wheel rate & ride frequency
Only for iPhone
$4.99 · Designed for iPhone. Not verified for macOS.
iPhone
Spring rate to ride frequency, instantly. Wheel rate, ride frequency and front/rear balance — fully offline.
SpringRate converts between spring rate, wheel rate and ride frequency so you can dial in a suspension setup with real numbers.
Enter spring rate, motion ratio, spring angle and sprung mass to get wheel rate and ride frequency — or solve it backwards from a target frequency to the spring rate you need. Compare front and rear to set your ride-frequency spread.
FEATURES
• Wheel rate = spring rate x motion ratio squared x cos(angle)
• Ride frequency from wheel rate and sprung mass
• Reverse solve: target frequency to required spring rate
• Front/rear frequency spread (flat-ride)
• Metric (N/mm, kg) or imperial (lbf/in, lb)
• Save your setups
100% offline. No ads. No tracking. No account. A one-time purchase.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Yoshifumi Sato, 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
- Yoshifumi Sato
- Size
- 12 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Copyright
- © 2026 SpringRate
