# Intermittent vs FastRing

The clearest difference is in-app purchases: Intermittent at none against FastRing's 1. Intermittent also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. FastRing sells 1 one-off in-app purchase. Intermittent asks for nothing beyond the download.

Intermittent ships an update every 10 days, FastRing weekly. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Intermittent | FastRing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (46 ratings)](https://appshunter.io/ios/app/intermittent-fasting-tracker/id6767781311/reviews)** | — |
| Number of ratings | **46** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 days | **Weekly** |
| Monetization | Free | — |
| Size | 39 MB | 2 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Rohit Kumar](https://appshunter.io/developer/1896508140) | [Hemant Kaushik](https://appshunter.io/developer/6789262442) |

## What reviewers say

### Intermittent

[App page](https://appshunter.io/ios/app/intermittent-fasting-tracker/id6767781311)

This app tracks your fasting progress by showing real-time biological phases like ketosis and autophagy. It provides science-backed explanations for each stage and supports various fasting protocols without requiring an account or subscription.

**Highlights:** Real-time biological phase tracking (Fed, Lipolysis, Ketosis, Autophagy), Support for multiple fasting protocols (12:12 to 72-hour fasts), Free science library with cited primary sources, Adaptive hydration target, Weight and progress tracking with trend analysis, Private sharing circle with applause-only responses, Home screen widget and cross-device sync

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

**In-app purchases:** none


### FastRing

[App page](https://appshunter.io/ios/app/fastring-intermittent-fast/id6789262440)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Unlock | $4.99 | one-time |


## Frequently asked questions

### Is Intermittent free?

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

### Is FastRing free?

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

### Do Intermittent or FastRing have ads?

Neither Intermittent nor FastRing shows ads.

### Which is updated more often, Intermittent or FastRing?

Intermittent ships an update every 10 days, and FastRing weekly. Most recently, Intermittent was updated on October 14, 2026 and FastRing on October 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.*