# Simply Fast vs Ninja Intermittent Fasting

The clearest difference is price: Ninja Intermittent Fasting at Free against Simply Fast's $0.99. Ninja Intermittent Fasting also leads on iOS requirement (12.0 vs 18.0). Simply Fast's advantage is rating (4.5 vs 4.0) and in-app purchases (none vs 1). On review sentiment, ratings volume and device support there is nothing between them.

Ninja Intermittent Fasting is free to download; Simply Fast costs $0.99 up front. Ninja Intermittent Fasting sells 1 in-app purchase, starting at $2.00 per month. Simply Fast asks for nothing beyond the download.

Simply Fast holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Simply Fast ships an update every 2 months, Ninja Intermittent Fasting every 12 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Simply Fast | Ninja Intermittent Fasting |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/simply-fast/id1463942932/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/ninja-intermittent-fasting/id1611731509/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 2 MB | 38 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Mpathy Tech](https://appshunter.io/developer/1463942931) | [Denis Vithani](https://appshunter.io/developer/1611512969) |

## What reviewers say

### Simply Fast

[App page](https://appshunter.io/ios/app/simply-fast/id1463942932)

This minimalist app helps you achieve time-restricted fasting goals with a simple, intuitive interface. Configure fasting start times and durations, and receive timely notifications for your fasting and eating windows. No account or sign-in is required.

**Highlights:** Simple and easy-to-use design, Customizable fasting start times, Adjustable fasting durations (12-23 hours), Fasting and eating window notifications, No sign-in or account required, Privacy-focused, no data collection

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

**In-app purchases:** none


### Ninja Intermittent Fasting

[App page](https://appshunter.io/ios/app/ninja-intermittent-fasting/id1611731509)

This app helps users track intermittent fasting for weight loss and improved health. It offers various fasting plans, a timer, and guidance for beginners and advanced users. It supports integration with other nutrition plans and aims to promote fat burning and detoxification.

**Highlights:** Fasting timer and tracker, Variety of fasting plans, Suitable for all levels, Supports keto, low-carb diets, Promotes fat burning, Detoxification benefits

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access Premium Plan | $2.00 | per month |


## Frequently asked questions

### Is Simply Fast free?

Simply Fast costs $0.99, with no in-app purchases.

### Is Ninja Intermittent Fasting free?

Ninja Intermittent Fasting is free to download, with in-app purchases available.

### Which has better reviews, Simply Fast or Ninja Intermittent Fasting?

Simply Fast is rated higher. Simply Fast averages 4.5 out of 5 from 2 ratings, while Ninja Intermittent Fasting averages 4.0 from 4 ratings.

### Do Simply Fast or Ninja Intermittent Fasting have ads?

Ninja Intermittent Fasting shows ads; Simply Fast does not.

### Which is updated more often, Simply Fast or Ninja Intermittent Fasting?

Simply Fast ships an update every 2 months, and Ninja Intermittent Fasting every 12 months. Most recently, Simply Fast was updated on November 3, 2026 and Ninja Intermittent Fasting on November 3, 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.*