# InterFasting vs Diet Diary DaDa

The clearest difference is in-app purchases: Diet Diary DaDa at none against InterFasting's 7. Diet Diary DaDa also leads on iOS requirement (15.1 vs 17.0). InterFasting's advantage is update cadence (every 3 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. InterFasting sells 7 in-app purchases, starting at $3.99 per month. Diet Diary DaDa asks for nothing beyond the download.

InterFasting ships an update every 3 days, Diet Diary DaDa every 3 weeks. The most recent releases landed on November 13, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | InterFasting | Diet Diary DaDa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (363 ratings)](https://appshunter.io/ios/app/interfasting-fasting-tracker/id1467464443/reviews)** | — |
| Number of ratings | **363** | — |
| Positive reviews | 88.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 112 MB | 30 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Liviet](https://appshunter.io/developer/1464827169) | [Seonggon Sim](https://appshunter.io/developer/1565259950) |

## What reviewers say

### InterFasting

[App page](https://appshunter.io/ios/app/interfasting-fasting-tracker/id1467464443)

This app offers a smart fasting tracker and timer to help users achieve their intermittent fasting goals without extreme dieting. It provides AI-powered personalized schedules, a food scanner for calorie and macro tracking, and detailed insights into the body's stages during a fast.

**Highlights:** AI Schedule Recommendations, AI Calorie Counter & Food Scanner, Fasting Timer (16:8, 5:2, OMAD), All-in-One Health Tracker, Hour-by-Hour Body Stages, Home Screen Widgets, Apple Health Integration

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intermittent Fasting Monthly | $3.99 | per month |
| Intermittent Fasting Monthly | $6.99 | per month |
| Intermittent Fasting Annual | $14.99 | per year |
| Intermittent Fasting Annual | $19.99 | per year |
| Intermittent Fasting Annual | $29.99 | per year |
| Intermittent Fasting Annual | $49.99 | per year |
| Premium User | $12.99 | one-time |


### Diet Diary DaDa

[App page](https://appshunter.io/ios/app/diet-diary-dada-weight-log/id6499539149)

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

**In-app purchases:** none


## Frequently asked questions

### Is InterFasting free?

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

### Is Diet Diary DaDa free?

Diet Diary DaDa is free to download, with no in-app purchases.

### Do InterFasting or Diet Diary DaDa have ads?

Both InterFasting and Diet Diary DaDa show ads.

### Which is updated more often, InterFasting or Diet Diary DaDa?

InterFasting ships an update every 3 days, and Diet Diary DaDa every 3 weeks. Most recently, InterFasting was updated on November 13, 2026 and Diet Diary DaDa on November 12, 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.*