# ダイエットカレンダー vs 100日ダイエットAI

The clearest difference is in-app purchases: ダイエットカレンダー at none against 100日ダイエットAI's 4. ダイエットカレンダー also leads on device support (3 vs 1) and iOS requirement (12.0 vs 17.0). 100日ダイエットAI's advantage is ads (none vs shown) and update cadence (fortnightly vs every 6 months). On price there is nothing between them.

Both are free to download. 100日ダイエットAI sells 4 in-app purchases, starting at $5.99 per year. ダイエットカレンダー asks for nothing beyond the download.

ダイエットカレンダー ships an update every 6 months, 100日ダイエットAI fortnightly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ダイエットカレンダー | 100日ダイエットAI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | — | Freemium |
| Size | 48 MB | 33 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [yumearu Co.,Ltd.](https://appshunter.io/developer/411112570) | [株式会社オポチュニティ](https://appshunter.io/developer/1740927723) |

## What reviewers say

### ダイエットカレンダー

[App page](https://appshunter.io/ios/app/id1669628501)

**Features:** macOS Compatibility

**In-app purchases:** none


### 100日ダイエットAI

[App page](https://appshunter.io/ios/app/100ai/id6739611540)

Effortlessly track your diet and health with AI-powered photo analysis. Automatically calculate calories, monitor nutritional balance, and receive personalized advice to achieve your weight goals without the hassle of manual input.

**Highlights:** AI calorie and PFC analysis from photos, Nutritional balance scoring, Daily/weekly diet and weight reports, Weight and BMI tracking with graphs, Personalized diet plans, Food item ranking, AI-driven improvement advice

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 食事改善プレミアムプラン(年額) | $5.99 | per year |
| 食事改善プレミアムプラン（年額） | $11.99 | per year |
| 食事改善プラン(永久版) | $5.99 | one-time |
| 食事改善プラン（永久版） | $14.99 | one-time |


## Frequently asked questions

### Is ダイエットカレンダー free?

ダイエットカレンダー is free to download, with no in-app purchases.

### Is 100日ダイエットAI free?

100日ダイエットAI is free to download, with in-app purchases available.

### Do ダイエットカレンダー or 100日ダイエットAI have ads?

ダイエットカレンダー shows ads; 100日ダイエットAI does not.

### Which is updated more often, ダイエットカレンダー or 100日ダイエットAI?

ダイエットカレンダー ships an update every 6 months, and 100日ダイエットAI fortnightly. Most recently, ダイエットカレンダー was updated on October 27, 2026 and 100日ダイエットAI 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.*