# InterFasting vs Diet Lights

The clearest difference is update cadence: InterFasting at every 2 days against Diet Lights's every 2 weeks. InterFasting also leads on ratings volume (267 vs 2) and rating (4.8 vs 4.5). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. InterFasting sells 3 in-app purchases, starting at $3.99 per month and Diet Lights sells 3 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

InterFasting holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: InterFasting has 267 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 88% of InterFasting's written reviews are positive against 90% of Diet Lights's, so the app with the better star average is not the one people write more warmly about.

InterFasting ships an update every 2 days, Diet Lights every 2 weeks. The most recent releases landed on September 22, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | InterFasting | Diet Lights |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (267 ratings)](https://appshunter.io/ios/app/interfasting-fasting-timer/id1467464443/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/diet-lights-weight-tracker/id6748281990/reviews) |
| Number of ratings | **267** | 2 |
| Positive reviews | 88.4% of reviews | **90.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 85 MB | 94 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kim Yunhoo](https://appshunter.io/developer/1464827169) | [House201](https://appshunter.io/developer/1767211373) |

## What reviewers say

### InterFasting

[App page](https://appshunter.io/ios/app/interfasting-fasting-timer/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 (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 month | $3.99 | per month |
| Gandan Premium Annual | $12.99 | per year |
| Premium User | $12.99 | one-time |


### Diet Lights

[App page](https://appshunter.io/ios/app/diet-lights-weight-tracker/id6748281990)

Track your weight and diet progress with a simple traffic light system. Log morning and evening weights, monitor fasting times, and record daily moods and meals. Visualize your trends and reach your target weight with helpful reminders.

**Highlights:** Traffic light weight progress system, Intermittent fasting timer, Daily mood and meal logging, Weight trend graphs, BMI calculation, Customizable reminders, Passcode lock

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 프리미엄 | $1.99 | per 7 days |
| Premium Monthly | $2.99 | per month |
| Premium | $12.99 | per year |


## Frequently asked questions

### Is InterFasting free?

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

### Is Diet Lights free?

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

### Which has better reviews, InterFasting or Diet Lights?

InterFasting is rated higher. InterFasting averages 4.8 out of 5 from 267 ratings, while Diet Lights averages 4.5 from 2 ratings.

### Do InterFasting or Diet Lights have ads?

Both InterFasting and Diet Lights show ads.

### Which is updated more often, InterFasting or Diet Lights?

InterFasting ships an update every 2 days, and Diet Lights every 2 weeks. Most recently, InterFasting was updated on September 22, 2026 and Diet Lights on September 7, 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.*