# ONE vs Profast

The clearest difference is ads: ONE at none against Profast's shown. ONE also leads on iOS requirement (15.1 vs 18.1). Profast's advantage is update cadence (every 9 days vs every 4 weeks). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. ONE sells 6 in-app purchases, starting at $2.99 per 7 days and Profast sells 6 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for ONE against 5.0 for Profast. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

ONE ships an update every 4 weeks, Profast every 9 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | ONE | Profast |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/oneintermittent-fasting/id6759722688/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/profast-intermittent-fasting/id6787008342/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 weeks | **Every 9 days** |
| Monetization | Freemium | Free with in-app purchases |
| Size | 49 MB | 142 MB |
| Requires iOS | **15.1** | 18.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 17+ | 4+ |
| Developer | [Create Rush](https://appshunter.io/developer/1880351509) | [Deepak Sharma](https://appshunter.io/developer/1878056503) |

## What reviewers say

### ONE

[App page](https://appshunter.io/ios/app/oneintermittent-fasting/id6759722688)

This app simplifies intermittent fasting with a one-tap timer and progress tracker. It guides users through fasting stages, offers various plans, and provides insights into body changes. The focus is on building consistent habits without unnecessary complexity.

**Highlights:** One-tap fasting timer, Live fasting stage tracking, Multiple fasting plan options, Daily streak tracking, Weight and water tracking, AI-powered progress summaries, Offline functionality

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Standard Weekly | $2.99 | per 7 days |
| Premium Weekly | $4.99 | per 7 days |
| Standard Monthly | $4.99 | per month |
| Premium Monthly | $9.99 | per month |
| Standard Yearly | $49.99 | per year |
| Premium Yearly | $99.99 | per year |


### 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 |


## Frequently asked questions

### Is ONE free?

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

### Is Profast free?

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

### Which has better reviews, ONE or Profast?

ONE and Profast are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do ONE or Profast have ads?

Profast shows ads; ONE does not.

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

ONE ships an update every 4 weeks, and Profast every 9 days. Most recently, ONE was updated on October 24, 2026 and Profast 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.*