# KAT vs ACT Head Impact Tracker

KAT and ACT Head Impact Tracker are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

KAT ships an update every 5 months, ACT Head Impact Tracker every 6 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | KAT | ACT Head Impact Tracker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/act-head-impact-tracker/id6504392807/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | — | Free |
| Size | 59 MB | 8 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PNTC Holdings LLC](https://appshunter.io/developer/1678701592) | [Northern Sports Insight and Intelligence Oy](https://appshunter.io/developer/1752073752) |

## What reviewers say

### KAT

[App page](https://appshunter.io/ios/app/kat-sport-technique-training/id6446675760)

**Features:** macOS Compatibility

**In-app purchases:** none


### ACT Head Impact Tracker

[App page](https://appshunter.io/ios/app/act-head-impact-tracker/id6504392807)

This app measures and tracks impacts and forces on the head during dry-land sports. It's designed for athletes, coaches, and teams to monitor head events across various levels and age groups.

**Highlights:** Impact and force measurement, Head event tracking, Versatile sports application, Suitable for individual athletes or teams, Supports all ages above 3, Affordable tracking device

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KAT free?

KAT is free to download, with no in-app purchases.

### Is ACT Head Impact Tracker free?

ACT Head Impact Tracker is free to download, with no in-app purchases.

### Do KAT or ACT Head Impact Tracker have ads?

Neither KAT nor ACT Head Impact Tracker shows ads.

### Which is updated more often, KAT or ACT Head Impact Tracker?

KAT ships an update every 5 months, and ACT Head Impact Tracker every 6 months. Most recently, KAT was updated on November 3, 2026 and ACT Head Impact Tracker on October 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*