# Intermittent Fasting vs iSober

The clearest difference is ads: iSober at none against Intermittent Fasting's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Intermittent Fasting sells 6 in-app purchases, starting at $3.99 per 7 days and iSober sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Intermittent Fasting ships an update every 2 months, iSober every 3 months. The most recent releases landed on November 8, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Intermittent Fasting | iSober |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (15K ratings)](https://appshunter.io/ios/app/intermittent-fasting-purefast/id823305987/reviews)** | — |
| Number of ratings | **15K** | — |
| Positive reviews | 90.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Subscription | — |
| Size | 334 MB | 26 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fast Builder Limited](https://appshunter.io/developer/596300475) | [Alcohol Breathalysers Pty Ltd](https://appshunter.io/developer/1457499082) |

## What reviewers say

### Intermittent Fasting

[App page](https://appshunter.io/ios/app/intermittent-fasting-purefast/id823305987)

Achieve your weight loss goals with personalized workout and meal plans. Track your progress and receive expert guidance to ensure safe and effective exercise. Take control of your health and fitness journey.

**Highlights:** Personalized workout plans, Personalized meal plans, Variety of exercises, Progress tracking, Expert guidance

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lose weight in just 12 weeks! | $3.99 | per 7 days |
| Lose Weight Fast with PRO | $12.99 | per month |
| Lose weight in just 30 days! | $19.99 | per 3 months |
| Lock-in our lowest price! | $29.99 | per year |
| Weight Loss Premium | $39.99 | per year |
| Weight Loss Premium | $49.99 | per year |

**What reviewers like**

- 🚀 Effective workouts
- 👍 Variety of exercises
- 💪 Helps with weight loss
- 🙌 Motivating and encouraging
- 🕰️ Short and manageable workouts

**What reviewers complain about**

- 🔒 Requires internet connection
- 🤔 Limited customization options
- 🤕 Can be challenging for beginners
- 🕰️ Workouts can be repetitive

**Reported bugs**

- Workout duration inconsistencies
- Compatibility issues with certain devices

**Requested features**

- Offline mode
- More personalized workout plans
- Ability to track water intake
- Reminders and notifications


### iSober

[App page](https://appshunter.io/ios/app/isober/id1457499083)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $2.99 | per month |
| Semi-annual subscription | $17.99 | per 6 months |
| Annual subscription | $32.99 | per year |


## Frequently asked questions

### Is Intermittent Fasting free?

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

### Is iSober free?

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

### Do Intermittent Fasting or iSober have ads?

Intermittent Fasting shows ads; iSober does not.

### Which is updated more often, Intermittent Fasting or iSober?

Intermittent Fasting ships an update every 2 months, and iSober every 3 months. Most recently, Intermittent Fasting was updated on November 8, 2026 and iSober on November 2, 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.*