# TgForce 3D — Impact Level Measurement

> Impact Level Measurement (iPhone/iPad app by Systemes Kelsec Inc.)

- Source: https://appshunter.io/ios/app/tgforce-3d/id1459330958 (this page in markdown: same URL + `.md`)
- Developer: [Systemes Kelsec Inc](https://appshunter.io/developer/943716389)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 12 MB
- Languages: English
- Released: 2019-05-02
- Data updated: 2026-05-17
- User reviews in markdown: https://appshunter.io/ios/app/tgforce-3d/id1459330958/reviews.md

## What is TgForce 3D?

Note: To use this App, you will need a TgForce 3D impact sensor and iOS 11.0 or later.

The new TgForce 3D provides real-time measurement and feedback of impact level while running. With the companion sensor attached to the tibia, the TgForce 3D App evaluates the acceleration level of all axes (X, Y, Z, and 3D Vector). It can be used for monitoring impact while running and evaluate ground reaction forces. These features are helpful for gait retraining or transitioning to a new type of shoes.

Features:
-Real-time feedback (Visual and Audio) of 3D impact magnitude while running
-The new sensor is smaller and lighter than the previous version
-Display 3D (Vector) acceleration or single axis (X, Y or Z) )
-Run with or without the phone. The App can retrieve running data stored in the sensor.
-Export data on iCloud Drive for further analysis
-Set maximum impact level (gMax)
-Detailed impact level chart for each running session
-Proven direct correlation with ground reaction forces


## Version history (last 5 releases)

### 4.9.5 — 2021-02-23

- Updated for iOS 14.4
- Default Peak Impact display is now Z axis

### 4.9 — 2020-08-12

-Update to iOS 13.6
-Stability improved

### 4.8 — 2020-02-19

-Update to iOS 13.3
-Impact level is always displayed. Starting a new session is not required anymore to display impact value when a TgForce sensor has been paired.
-This update contains stability and performance improvements.

### 4.7 — 2019-12-04

-Update to iOS 13
-This update contains stability and performance improvements.

### 4.6 — 2019-08-14

- Update to iOS 12.4
- Default gMax Impact Value now set at 8.0g
- Fix a minor issue with profile picture on iPad

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## Related topics

[tgforce 3d](https://appshunter.io/ios/topics/tgforce-3d)

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*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 2026-05-17.*