# 遺伝子博士ダイエット vs my nicca

The clearest difference is review sentiment: my nicca at 62% against 遺伝子博士ダイエット's 3%. my nicca also leads on rating (4.7 vs 1.9) and ratings volume (5.9K vs 83). On price, update cadence and in-app purchases there is nothing between them.

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

my nicca holds the better App Store score, 4.7 against 1.9. That said, the two scores are not equally well evidenced: my nicca has 5.9K ratings behind it against 83, so its average is the more settled of the two. Written reviews point the same way: 3% of 遺伝子博士ダイエット's written reviews are positive against 62% of my nicca's.

遺伝子博士ダイエット ships an update every 6 weeks, my nicca every 3 weeks. The most recent releases landed on September 27, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | 遺伝子博士ダイエット | my nicca |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.9 (83 ratings)](https://appshunter.io/ios/app/id1075242564/reviews) | **[4.7 (5.9K ratings)](https://appshunter.io/ios/app/my-nicca/id1623780682/reviews)** |
| Number of ratings | 83 | **5.9K** |
| Positive reviews | 3.2% of reviews | **62.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 55 MB | 31 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Campingcar Inc.](https://appshunter.io/developer/1435272854) | [FURYU Corporation](https://appshunter.io/developer/390085038) |

## What reviewers say

### 遺伝子博士ダイエット

[App page](https://appshunter.io/ios/app/id1075242564)

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

**In-app purchases:** none


### my nicca

[App page](https://appshunter.io/ios/app/my-nicca/id1623780682)

This app helps you build and track daily habits with a simple stamp-based system. Visualize your progress with motivating graphs and receive reminders to stay on track. It's designed for anyone looking to achieve their goals through consistent effort.

**Highlights:** Simple stamp-based habit logging, Progress visualization with graphs, Customizable reminders, Memo function for notes, Variety of stamps and icons, Post-date entry for missed logs

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🎨 Cute design
- ✨ Very convenient
- 💖 Motivating
- 🌟 Simple and cute UI

**What reviewers complain about**

- 🔒 Privacy policy concerns
- ❌ Cannot edit/delete 'did not do' stamps
- 🗂️ No sorting for items
- 🤔 Privacy policy is concerning
- 🗂️ Limited icon variety

**Reported bugs**

- 🐛 App does not open
- 🐛 App freezes on top page
- 🐛 App crashes
- 🐛 App opens but freezes
- 🐛 App does not open after iOS update

**Requested features**

- 💡 Change 'total days' start date
- 💡 Add more hobby-related icons
- 💡 Combine 'did/did not do' on same page
- 💡 Add a 'pay for support' option
- 💡 Allow reordering of items/lists


## Frequently asked questions

### Is 遺伝子博士ダイエット free?

遺伝子博士ダイエット is free to download, with no in-app purchases.

### Is my nicca free?

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

### Which has better reviews, 遺伝子博士ダイエット or my nicca?

my nicca is rated higher. 遺伝子博士ダイエット averages 1.9 out of 5 from 83 ratings, while my nicca averages 4.7 from 5.9K ratings.

### Which is updated more often, 遺伝子博士ダイエット or my nicca?

遺伝子博士ダイエット ships an update every 6 weeks, and my nicca every 3 weeks. Most recently, 遺伝子博士ダイエット was updated on September 27, 2026 and my nicca on September 25, 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.*