# LightFasting vs CaffeineLog

The clearest difference is price: CaffeineLog at Free against LightFasting's $0.99. CaffeineLog also leads on update cadence (every 2 days vs every 2 months) and review sentiment (100% vs 83%). LightFasting's advantage is in-app purchases (none vs 2) and iOS requirement (14.0 vs 17.0). On rating, ads and device support there is nothing between them.

CaffeineLog is free to download; LightFasting costs $0.99 up front. CaffeineLog sells 2 in-app purchases, starting at $1.99 per month. LightFasting asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for LightFasting against 5.0 for CaffeineLog. Both are backed by a comparable volume of ratings — 1 and 3 respectively. Written reviews are what separate them: 83% of LightFasting's written reviews are positive against 100% of CaffeineLog's.

LightFasting ships an update every 2 months, CaffeineLog every 2 days. The most recent releases landed on October 2, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | LightFasting | CaffeineLog |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/lightfasting/id1576166369/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/caffeinelog-track-caffeine/id6736601220/reviews) |
| Number of ratings | 1 | **3** |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Paid | **Freemium** |
| Size | 44 MB | 50 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 12+ | 4+ |
| Developer | [兴龙 张](https://appshunter.io/developer/1576162823) | [Yugo Matsuda](https://appshunter.io/developer/1517181379) |

## 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


### CaffeineLog

[App page](https://appshunter.io/ios/app/caffeinelog-track-caffeine/id6736601220)

Easily record and manage your daily caffeine intake to support a healthy lifestyle. Diagnose optimal consumption, track over 300 beverage types, and visualize your intake patterns over time. Sync data seamlessly across devices for convenient access.

**Highlights:** Support appropriate caffeine intake diagnosis, Record from over 300 beverage types, Customizable logs with tags, images, and notes, Visual data display with time-series charts, Seamless device synchronization via iCloud, Pattern analysis by day, week, month, and year

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Plan | $1.99 | per month |
| Premium Yearly Plan | $14.99 | per year |


## Frequently asked questions

### Is LightFasting free?

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

### Is CaffeineLog free?

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

### Which has better reviews, LightFasting or CaffeineLog?

LightFasting and CaffeineLog are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do LightFasting or CaffeineLog have ads?

Neither LightFasting nor CaffeineLog shows ads.

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

LightFasting ships an update every 2 months, and CaffeineLog every 2 days. Most recently, LightFasting was updated on October 2, 2026 and CaffeineLog on September 29, 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.*