# Prevent vs Intervals lite

Prevent and Intervals lite 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.

Prevent ships an update monthly, Intervals lite every 6 weeks. The most recent releases landed on September 1, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Prevent | Intervals lite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/prevent/id1121375378/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free | — |
| Size | 46 MB | 3 MB |
| Requires iOS | 16.4 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Prevent Biometrics, Inc](https://appshunter.io/developer/1121375377) | [Jim Calvin](https://appshunter.io/developer/720127005) |

## What reviewers say

### Prevent

[App page](https://appshunter.io/ios/app/prevent/id1121375378)

This app pairs with a special mouthguard to monitor head impacts in real-time. It provides detailed data on acceleration, direction, and load for each impact, helping teams and parents assess player safety and identify athletes needing evaluation.

**Highlights:** Real-time head impact data, Linear and rotational acceleration tracking, Impact direction and location analysis, Impact Load measurement, Player and team data views, Live alerts for high-magnitude impacts

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Intervals lite

[App page](https://appshunter.io/ios/app/intervals-lite/id6446418020)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prevent free?

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

### Is Intervals lite free?

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

### Do Prevent or Intervals lite have ads?

Neither Prevent nor Intervals lite shows ads.

### Which is updated more often, Prevent or Intervals lite?

Prevent ships an update monthly, and Intervals lite every 6 weeks. Most recently, Prevent was updated on September 1, 2026 and Intervals lite on September 14, 2026.

---

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