# Mentor Breast Simulator vs Gratitude Journal Diary

The clearest difference is update cadence: Gratitude Journal Diary at every 6 days against Mentor Breast Simulator's every 3 weeks. Gratitude Journal Diary also leads on iOS requirement (16.4 vs 18.0). 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.

Mentor Breast Simulator ships an update every 3 weeks, Gratitude Journal Diary every 6 days. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Mentor Breast Simulator | Gratitude Journal Diary |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (157 ratings)](https://appshunter.io/ios/app/mentor-breast-simulator/id6503239134/reviews)** | — |
| Number of ratings | **157** | — |
| Positive reviews | 37.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Ad-supported | — |
| Size | 790 MB | 83 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Arbrea Labs](https://appshunter.io/developer/1476200651) | [Flit Soft LLC](https://appshunter.io/developer/1737728213) |

## What reviewers say

### 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


### Gratitude Journal Diary

[App page](https://appshunter.io/ios/app/gratitude-journal-diary/id6811148340)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mentor Breast Simulator free?

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

### Is Gratitude Journal Diary free?

Gratitude Journal Diary is free to download, with no in-app purchases.

### Do Mentor Breast Simulator or Gratitude Journal Diary have ads?

Neither Mentor Breast Simulator nor Gratitude Journal Diary shows ads.

### Which is updated more often, Mentor Breast Simulator or Gratitude Journal Diary?

Mentor Breast Simulator ships an update every 3 weeks, and Gratitude Journal Diary every 6 days. Most recently, Mentor Breast Simulator was updated on October 27, 2026 and Gratitude Journal Diary on October 24, 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.*