This app uses your phone's camera to instantly measure the distance to a disc golf basket, indicating whether it's uphill or downhill. It helps players understand putting rules and strategize throws based on elevation and distance.
1.9.0
September 10, 2026
• Steadier reading on long shots: past 40 m the distance settles over a longer window and no longer flickers by a decimetre. • Slope and plays-like use the phone's tilt from the moment the frame was captured, so they hold still while you move. • The camera recovers on its own after a phone call or another interruption mid-measurement. • Settings follow the system dark mode; accuracy modes have plain-language descriptions. • Settings › Calibration shows which lens is calibrated; technical focal-length values moved under Advanced.
More$12.99
Full Range
Exact distance at all ranges.
ChainRanger does not contain advertisements. The app is free to use for basic features, with an optional one-time purchase for advanced functionality.
ChainRanger is free to download and use for measuring distances within Circle 1 (10 meters). The 'Full Range' upgrade, which includes all distances and plays-like distance, is a one-time purchase.
ChainRanger uses on-device AI to detect baskets and calculate distance in real-time. LiDAR assist on iPhone Pro models further enhances close-range precision.
ChainRanger is currently supported on iPhone devices. Specific features like LiDAR assist are available on iPhone Pro models.
The latest version, 1.9.0, was released on September 10, 2026. Updates typically include improvements to AI detection, feature enhancements, and bug fixes.
Yes, all image processing happens 100% on your phone, meaning ChainRanger can be used without an internet connection. Camera frames are never uploaded.
The 'Full Range' purchase unlocks exact distance measurements at all ranges, including Circle 2 and beyond. It also provides the 'plays-like' distance, factoring in elevation for more accurate throw planning.
ChainRanger has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.
