# Trailmetry — Mountain Biking telemetry > Mountain Biking telemetry (iPhone/iPad app by Franck Guillaouic.) - Source: https://appshunter.io/ios/app/trailmetry/id6756703543 (this page in markdown: same URL + `.md`) - Developer: [Franck Guillaouic](https://appshunter.io/developer/1862407295) - Category: Sports - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.1 · 94 MB - Languages: American English - Released: 2026-02-05 - Data updated: 2026-09-07 - User reviews in markdown: https://appshunter.io/ios/app/trailmetry/id6756703543/reviews.md ## What is Trailmetry? Your riding companion, record every ride and turn your mountain bike into a suspension and riding telemetry system. Using wireless sensors and the Trailmetry app, capture complete suspension data, terrain information, riding metrics, and get precise setup recommendations after every ride. Improve your suspension setup in 3 rides. Our engine analyses your fork and shock data after every session and tells you exactly what to change: pressure, rebound, compression, and why. WHAT YOU GET RIDE RECORDING · Attach two Bluetooth sensors to your fork and shock · Every compression, rebound, and impact captured automatically with GPS and weather data · Optional heart rate tracking compatible with any Bluetooth chest strap or smartwatch · Hit record and ride, Trailmetry does the rest METRICS AND CHARTS · Bottom-out detection with count, velocity, and trail location · Travel zone distribution showing how your suspension uses its travel · Compression and rebound velocity with LSC/LSR balance · How hard your suspension is used in the most demanding sections of your ride · Impact detection and classification by severity · Suspension balance between fork and shock · Air leak estimation detected session over session · Full session timeline to visualize suspension movement across your ride GPS AND MAPS · GPS trail mapping with suspension heatmap overlay · Impact severity mapped to exact trail coordinates · Bottom-out locations and frequency on the map · Identify the sections that stress your setup most RECOMMENDATIONS · After every session, our engine tells you exactly what to change: pressure in PSI, rebound and compression in clicks, and why · Detects packing down, bottoming out, pressure drift, and front to rear imbalance · Combine telemetry data with your riding feel: soft, harsh, or balanced · Progressive tuning recommendations after every session · AI coaching with a plain-language debrief and concrete next steps PROGRESSION AND HISTORY · Track your suspension setup and performance across every session · Keep track of your results over the seasons · See exactly when a tuning change made a difference · Multiple rider profiles supported COMMUNITY AND TRAILS · Trail library with your best runs ranked per trail · Suspension leaderboards and best times per trail · Compare your setup with other riders on the same terrain · The first open rider-driven suspension telemetry database for mountain biking LOG YOUR FEEL · Rate how your suspension felt after each ride: soft, harsh, balanced · Combine your feedback with telemetry data for more accurate recommendations HARDWARE · Two WitMotion WT9011DCL-BT50 Bluetooth sensors · Available directly from the WitMotion store · Attach, pair, ride and measure · Compatible with any Bluetooth heart rate sensor YOUR DATA · Stored locally on your device · Optional encrypted cloud backup · GDPR compliant, you own your data From beginners dialling in their first suspension to racers chasing every millisecond. ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | 'Core' Monthly Subscription | $5.99 | per month | | Connect Monthly Subscription | $9.99 | per month | ## Version history (last 5 releases) ### 1.5.3 — 2026-08-28 What's New Improved session synchronization across devices. Public/private session status now stays synchronized between devices. Deleted sessions are now correctly removed from other devices after synchronization. Improved session management and reliability. Improved delete confirmation and feedback. Various stability and performance improvements ### 1.5.2 — 2026-08-27 What's New Simplified equipment settings with a single Suspension tab. Cleaner suspension setup for Low-Speed and High-Speed Compression & Rebound. Improved session synchronization across devices. Public/private session status now stays synchronized between devices. Deleted sessions are now correctly removed from other devices after synchronization. Improved delete confirmation and feedback. Various stability and performance improvements ### 1.5.1 — 2026-08-11 Fixed a crash and freezing issue affecting longer ride sessions (15+ minutes), especially those with GPS data. Improved loading speed and responsiveness on the ride analysis screen. ### 1.5.0 — 2026-08-10 Reworked calibration: clearer two-step process (get in position, then hold still) with visual feedback so you know it's working New "Drop In" option — calibrate at a comfortable spot, then start your ride whenever you're ready, even after walking or riding to the trailhead Fixed a crash that could occur on suspension charts ### 1.4.9 — 2026-08-08 Crash & background recovery for ride recordings : telemetry now checkpoints to disk during recording, so if the app is closed or interrupted mid-ride, your data isn't lost and can be recovered on next launch Fixed intermittent crash on suspension travel charts caused by a font-loading race condition Improved chart accuracy, travel/activity charts now show real elapsed time and correct % units on axes, plus raw measurement values in the data tooltip Fork/Shock chart filtering, selecting Fork or Shock in suspension view now syncs the corresponding chart, with the option to still view both together ## Apps similar to Trailmetry | App | Rating | Price | Category | | --- | --- | --- | --- | | [Bike Biomechanics Measuring AI](https://appshunter.io/ios/app/bike-biomechanics-measuring-ai/id6743622149) | — | Free | Sports | | [BrakeAce](https://appshunter.io/ios/app/brakeace/id6754046223) | — | Free | Sports | | [ShuttleOut](https://appshunter.io/ios/app/shuttleout/id6773259890) | — | Free | Sports | | [BYB Telemetry](https://appshunter.io/ios/app/byb-telemetry/id1535911432) | — | Free | Sports | | [Streamlines Firmware Updater](https://appshunter.io/ios/app/streamlines-firmware-updater/id6444262354) | — | Free | Sports | | [Swiftly Race Timer](https://appshunter.io/ios/app/swiftly-race-timer/id1612016221) | — | Free | Sports | --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-07.*