# InterFasting vs InOut

InterFasting and InOut both sit at 4.8 stars, but that hides the real split: 89% of InterFasting's written reviews are positive against 71% of InOut's. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. InterFasting sells 5 in-app purchases, starting at $3.99 per month and InOut sells 33 in-app purchases, starting at $7.59 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for InterFasting against 4.8 for InOut. Both are backed by a comparable volume of ratings — 359 and 554 respectively. Written reviews are what separate them: 89% of InterFasting's written reviews are positive against 71% of InOut's.

InterFasting ships an update every 4 days, InOut weekly. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | InterFasting | InOut |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (359 ratings)](https://appshunter.io/ios/app/interfasting-fasting-tracker/id1467464443/reviews) | **[4.8 (554 ratings)](https://appshunter.io/ios/app/inout-calorie-counter/id1599210729/reviews)** |
| Number of ratings | 359 | **554** |
| Positive reviews | **88.6% of reviews** | 70.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Weekly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 99 MB | 179 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Liviet](https://appshunter.io/developer/1464827169) | [Mynormal Company](https://appshunter.io/developer/1599206092) |

## What reviewers say

### InterFasting

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

This app helps users succeed with intermittent fasting through scientific and systematic management. It offers AI-powered schedule and calorie recommendations, a simple timer, and comprehensive tracking of fasting hours, meals, workouts, and water intake. Users can visualize progress and receive detailed reports to build healthy habits.

**Highlights:** AI fasting schedule recommendations, AI food calorie calculation, Intermittent fasting timer, Customizable fasting plans, All-in-one health tracking, Fasting analysis and reports, Home screen widget

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Intermittent Fasting Monthly | $3.99 | per month |
| Intermittent Fasting Monthly | $6.99 | per month |
| Intermittent Fasting Annual | $12.99 | per year |
| Intermittent Fasting Annual | $34.99 | per year |
| Premium User | $12.99 | one-time |


### InOut

[App page](https://appshunter.io/ios/app/inout-calorie-counter/id1599210729)

This app offers a comprehensive approach to dieting with features like automatic calorie calculation, AI coaching, and a supportive community. Track your meals, workouts, and progress with personalized insights and motivational tools.

**Highlights:** Automatic calorie and nutrient calculation, AI-powered personalized coaching and reports, Workout and meal logging with photo support, Community feed for sharing progress and support, Gamified challenges and point system, Customizable health habit reminders, Intermittent fasting schedule management

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

**In-app purchases (33)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 인아웃 Plus - 월간 구독 (스타터) | $7.59 | per month |
| 인아웃 Plus - 월간 구독 (스타터) | $7.99 | per month |
| 인아웃 Plus - 스타터 월간 구독 | $7.99 | per month |
| 인아웃 Plus - 월간 구독 (일반) | $8.99 | per month |
| 인아웃 Plus - 월간 구독 | $8.99 | per month |
| INOUT Monthly Membership | $9.99 | per month |
| INOUT Monthly Membership | $9.99 | per month |
| 인아웃 Plus - 월간 구독 (일반) | $9.99 | per month |
| 인아웃 Plus - 연간 구독 (특가) | $19.99 | per year |
| 인아웃 Plus - 연간 구독 (특가) | $25.90 | per year |
| 인아웃 Plus - 연간 구독 (특가) | $26.90 | per year |
| INOUT Annual Membership | $26.99 | per year |
| INOUT Annual Membership | $26.99 | per year |
| 인아웃 Plus - 연간 구독 (스타터) | $46.49 | per year |
| 인아웃 Plus - 연간 구독 (일반) | $46.90 | per year |
| 인아웃 Plus - 연간 구독 (스타터) | $46.99 | per year |
| INOUT Annual Membership | $48.99 | per year |
| INOUT Annual Membership | $48.99 | per year |
| 인아웃 Plus - 연간 구독 (일반) | $49.99 | per year |
| 인아웃 Plus - 스타터 연간 구독 | $49.99 | per year |
| 인아웃 Plus - 연간 구독 (일반) | $53.99 | per year |
| 인아웃 Plus - 연간 구독 | $53.99 | per year |
| 200 Apples | $0.99 | one-time |
| 200 Apples | $1.49 | one-time |
| 400 Apples | $2.49 | one-time |
| 400 Apples | $2.99 | one-time |
| 700 Apples | $3.99 | one-time |
| 700 Apples | $4.49 | one-time |
| 1000 Apples | $5.99 | one-time |
| 1300 Apples | $6.99 | one-time |
| 1300 Apples | $7.49 | one-time |
| 1600 Apples | $8.49 | one-time |
| 2000 Apples | $8.99 | one-time |

**What reviewers like**

- 👍 Basic features all in one app
- 👍 Completely free to use
- 👍 Cute and simple design
- 👍 Helpful community
- 👍 Motivating and engaging

**What reviewers complain about**

- 🐛 Occasional bugs and glitches
- 🌐 Lack of language options for non-Korean users
- ⚙️ Limited settings to adjust calories/macros
- 💰 Ads even after paying for the app
- 🕰️ Issues with time/date settings for overseas users

**Reported bugs**

- Messaging issues in group chats
- Inconsistent recording of exercise data
- Unreliable group battle point tracking
- Problems with fasting timer and habit reminders
- Data loss and login issues for some users

**Requested features**

- Add language options for non-Korean users
- Improve exercise tracking features
- Integrate with fitness trackers/smartwatches
- Enhance food database and search functionality
- Add more customization options for the app


## Frequently asked questions

### Is InterFasting free?

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

### Is InOut free?

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

### Which has better reviews, InterFasting or InOut?

InOut is rated higher. InterFasting averages 4.8 out of 5 from 359 ratings, while InOut averages 4.8 from 554 ratings.

### Do InterFasting or InOut have ads?

Both InterFasting and InOut show ads.

### Which is updated more often, InterFasting or InOut?

InterFasting ships an update every 4 days, and InOut weekly. Most recently, InterFasting was updated on October 29, 2026 and InOut on October 30, 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.*