# Prevent vs Suji

The clearest difference is review sentiment: Prevent at 100% against Suji's 50%. Prevent also leads on rating (5.0 vs 3.4) and in-app purchases (none vs 1). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Suji sells 1 in-app purchase, starting at $4.99 per month. Prevent asks for nothing beyond the download.

Prevent holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 9 and 13 respectively. Written reviews point the same way: 100% of Prevent's written reviews are positive against 50% of Suji's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 2, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Prevent | Suji |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (9 ratings)](https://appshunter.io/ios/app/prevent/id1121375378/reviews)** | [3.4 (13 ratings)](https://appshunter.io/ios/app/suji/id6493856498/reviews) |
| Number of ratings | 9 | **13** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | **Free** | Freemium |
| Size | 46 MB | 452 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Prevent Biometrics, Inc](https://appshunter.io/developer/1121375377) | [SujiBFR](https://appshunter.io/developer/1534129267) |

## 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


### Suji

[App page](https://appshunter.io/ios/app/suji/id6493856498)

This app utilizes targeted compression technology to alleviate joint pain and enhance isolated muscle strength. It aids in accelerating muscle recovery, requiring a compatible device. It is not intended for professional sports medicine training.

**Highlights:** Targeted compression technology, Joint pain relief, Increase isolated muscle strength, Accelerate muscle recovery, Requires compatible device

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Suji Athlete Subscription | $4.99 | per month |


## Frequently asked questions

### Is Prevent free?

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

### Is Suji free?

Suji is free to download, with in-app purchases available.

### Which has better reviews, Prevent or Suji?

Prevent is rated higher. Prevent averages 5.0 out of 5 from 9 ratings, while Suji averages 3.4 from 13 ratings.

### Do Prevent or Suji have ads?

Neither Prevent nor Suji shows ads.

### Which is updated more often, Prevent or Suji?

Prevent ships an update monthly, and Suji monthly. Most recently, Prevent was updated on October 2, 2026 and Suji on September 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.*