# LightFasting vs Food_Diary

The clearest difference is review sentiment: LightFasting at 83% against Food_Diary's 0%. LightFasting also leads on ads (none vs shown) and device support (4 vs 2). Food_Diary's advantage is price (Free vs $0.99) and update cadence (fortnightly vs every 2 months). On in-app purchases there is nothing between them.

Food_Diary is free to download; LightFasting costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LightFasting ships an update every 2 months, Food_Diary fortnightly. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | LightFasting | Food_Diary |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lightfasting/id1576166369/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 44 MB | 72 MB |
| Requires iOS | **14.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [兴龙 张](https://appshunter.io/developer/1576162823) | [Seung-Un Ham](https://appshunter.io/developer/447543367) |

## What reviewers say

### LightFasting

[App page](https://appshunter.io/ios/app/lightfasting/id1576166369)

This app offers a scientific approach to weight loss by guiding users through a slightly high-intensity diet. It includes tools for calorie conversion, calculating ideal weight, basal metabolic rate, and BMI, along with tracking weight changes and energy intake.

**Highlights:** High-intensity diet guidance, Calorie and Joule conversion, Standard weight calculator, Basal metabolic rate calculator, Body mass index calculator, Energy intake tracking, Weight change tracking

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

**In-app purchases:** none


### Food_Diary

[App page](https://appshunter.io/ios/app/food-diary/id6754222492)

This app provides a visual food diary on a calendar, allowing you to see all your meals at a glance. It uses AI to generate meal images and estimate nutrition even if you forget to take a photo, and helps make sense of your health data by comparing it to averages.

**Highlights:** Visual meal diary on a calendar, AI-generated meal images, Estimated nutrition for meals, Health data comparison to averages, AI prompt for data breakdown

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

**In-app purchases:** none


## Frequently asked questions

### Is LightFasting free?

LightFasting costs $0.99, with no in-app purchases.

### Is Food_Diary free?

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

### Do LightFasting or Food_Diary have ads?

Food_Diary shows ads; LightFasting does not.

### Which is updated more often, LightFasting or Food_Diary?

LightFasting ships an update every 2 months, and Food_Diary fortnightly. Most recently, LightFasting was updated on October 24, 2026 and Food_Diary on October 22, 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.*