# Keep A Breast vs Mentor Breast Simulator

The clearest difference is review sentiment: Keep A Breast at 83% against Mentor Breast Simulator's 38%. Keep A Breast also leads on rating (5.0 vs 3.9) and monetization model (free vs ad-supported). Mentor Breast Simulator's advantage is ratings volume (155 vs 14). On price, ads, in-app purchases and device support there is nothing between them.

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

Keep A Breast holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Mentor Breast Simulator has 155 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 83% of Keep A Breast's written reviews are positive against 38% of Mentor Breast Simulator's.

Keep A Breast ships an update every 10 days, Mentor Breast Simulator every 3 weeks. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Keep A Breast | Mentor Breast Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (14 ratings)](https://appshunter.io/ios/app/keep-a-breast/id1518953075/reviews)** | [3.9 (155 ratings)](https://appshunter.io/ios/app/mentor-breast-simulator/id6503239134/reviews) |
| Number of ratings | 14 | **155** |
| Positive reviews | **83.3% of reviews** | 37.5% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | **Free** | Ad-supported |
| Size | 45 MB | 790 MB |
| Requires iOS | **16.2** | 18.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [The Keep A Breast Foundation](https://appshunter.io/developer/366745485) | [Arbrea Labs](https://appshunter.io/developer/1476200651) |

## What reviewers say

### Keep A Breast

[App page](https://appshunter.io/ios/app/keep-a-breast/id1518953075)

This app guides users through monthly breast self-checks with step-by-step tutorials and personalized reminders. It also provides breast health resources, survivor stories, and connects users to virtual care.

**Highlights:** Step-by-step self-check tutorial, Monthly reminder scheduling, Breast health resources, Virtual care connection, Survivor stories, Rewards for monthly checks

**Features:** Vision Pro support

**In-app purchases:** none


### Mentor Breast Simulator

[App page](https://appshunter.io/ios/app/mentor-breast-simulator/id6503239134)

Visualize different breast implant sizes and shapes in 3D augmented reality. Make informed decisions about your desired look with real-time simulations. All your images are stored securely on your phone.

**Highlights:** 3D Augmented Reality Simulation, Visualize implant sizes and shapes, Real-time visualization, Informed decision-making, Secure on-device image storage

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use interface
- 💡 Great visualization tool
- 💡 Realistic simulation
- 💡 Innovative technology
- 👍 Helpful for surgery planning

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Freezes and doesn't work
- 🐛 Photos not processed
- 🐛 Camera function difficult
- 🐛 Results look like bad photoshop

**Reported bugs**

- App crashes after taking photos
- App crashes when processing simulator
- App crashes when taking pictures
- App crashes before taking picture
- App crashes between 1st and 3rd picture

**Requested features**

- Allow users to change CC size
- Increase CC size options
- Allow breast lifting simulation
- Provide more realistic sizing/CC information


## Frequently asked questions

### Is Keep A Breast free?

Keep A Breast is free to download, with no in-app purchases.

### Is Mentor Breast Simulator free?

Mentor Breast Simulator is free to download, with no in-app purchases.

### Which has better reviews, Keep A Breast or Mentor Breast Simulator?

Keep A Breast is rated higher. Keep A Breast averages 5.0 out of 5 from 14 ratings, while Mentor Breast Simulator averages 3.9 from 155 ratings.

### Do Keep A Breast or Mentor Breast Simulator have ads?

Neither Keep A Breast nor Mentor Breast Simulator shows ads.

### Which is updated more often, Keep A Breast or Mentor Breast Simulator?

Keep A Breast ships an update every 10 days, and Mentor Breast Simulator every 3 weeks. Most recently, Keep A Breast was updated on October 16, 2026 and Mentor Breast Simulator on October 21, 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.*