# Phase vs LeanFast

The clearest difference is ads: LeanFast at none against Phase's shown. LeanFast also leads on update cadence (every 4 days vs every 10 days) and device support (3 vs 1). Phase's advantage is iOS requirement (17 vs 26.1). On price and in-app purchases there is nothing between them.

Both are free to download. Phase sells 4 in-app purchases, starting at $9.99 per month and LeanFast sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Phase ships an update every 10 days, LeanFast every 4 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Phase | LeanFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/phase-fasting-calorie-tracker/id6762522929/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 10 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 24 MB | 47 MB |
| Requires iOS | **17** | 26.1 |
| Devices | iPhone | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Ivan Hubar](https://appshunter.io/developer/1886899614) | [Hajer Trabelsi](https://appshunter.io/developer/6826828505) |

## What reviewers say

### Phase

[App page](https://appshunter.io/ios/app/phase-fasting-calorie-tracker/id6762522929)

This app helps you track intermittent fasting and monitor your nutrition. It features an AI food scanner, calorie and macro tracking, and visual progress indicators for your fasting stages. Easily log meals, set custom fasting schedules, and view your body's estimated responses.

**Highlights:** Intermittent fasting timer, AI food scanner, Calorie and macro tracking, Estimated fasting stages, Custom fasting schedules, Weight and water intake tracking, Apple Health integration

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited (Monthly) | $9.99 | per month |
| Unlimited (Yearly) Sale | $14.99 | per year |
| Unlimited (3 Months) | $24.99 | per 3 months |
| Unlimited (Yearly) | $34.99 | per year |


### LeanFast

[App page](https://appshunter.io/ios/app/leanfast-intermittent-fasting/id6818318288)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prism Monthly | $3.99 | per month |
| Prism Yearly | $29.99 | per year |
| Prism Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Phase free?

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

### Is LeanFast free?

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

### Do Phase or LeanFast have ads?

Phase shows ads; LeanFast does not.

### Which is updated more often, Phase or LeanFast?

Phase ships an update every 10 days, and LeanFast every 4 days. Most recently, Phase was updated on October 25, 2026 and LeanFast on October 31, 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.*