# Profast vs LeanFast

The clearest difference is ads: LeanFast at none against Profast's shown. LeanFast also leads on update cadence (every 4 days vs every 9 days). Profast's advantage is iOS requirement (18.1 vs 26.1). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Profast sells 6 in-app purchases, starting at $4.99 per 7 days 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.

Profast ships an update every 9 days, LeanFast every 4 days. The most recent releases landed on October 22, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Profast | LeanFast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/profast-intermittent-fasting/id6787008342/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 142 MB | 47 MB |
| Requires iOS | **18.1** | 26.1 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Deepak Sharma](https://appshunter.io/developer/1878056503) | [Hajer Trabelsi](https://appshunter.io/developer/6826828505) |

## What reviewers say

### Profast

[App page](https://appshunter.io/ios/app/profast-intermittent-fasting/id6787008342)

This app helps you track intermittent fasting with a smart timer, personalized phases, and detailed progress insights. It also features an AI food scanner for meal tracking and supports various fasting protocols and religious traditions. Connect with friends for shared fasting challenges.

**Highlights:** Intermittent fasting timer, Smart phase tracking, AI food scanner, Calorie, protein, and water tracker, Weight tracking, Buddy and group fasting, Religious fasting support

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Profast Weekly | $4.99 | per 7 days |
| Profast Monthly | $14.99 | per month |
| Profast Annual | $49.99 | per year |
| 10 Scan Credits | $2.99 | one-time |
| 50 Scan Credits | $8.99 | one-time |
| 200 Scan Credits | $29.99 | one-time |


### 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 Profast free?

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

### Is LeanFast free?

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

### Do Profast or LeanFast have ads?

Profast shows ads; LeanFast does not.

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

Profast ships an update every 9 days, and LeanFast every 4 days. Most recently, Profast was updated on October 22, 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.*