# Intermittent Fasting Timer IF vs Fast12

The clearest difference is review sentiment: Fast12 at 100% against Intermittent Fasting Timer IF's 0%. Fast12 also leads on update cadence (every 10 days vs every 3 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Intermittent Fasting Timer IF sells 3 in-app purchases, starting at $2.99 per month and Fast12 sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Intermittent Fasting Timer IF ships an update every 3 months, Fast12 every 10 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Intermittent Fasting Timer IF | Fast12 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/intermittent-fasting-timer-if/id6751149779/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 10 days** |
| Monetization | Freemium | Freemium |
| Size | 23 MB | 29 MB |
| Requires iOS | 26.0 | 26.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 17+ |
| Developer | [Jeff Cedilla](https://appshunter.io/developer/944615129) | [D App Online Ltd](https://appshunter.io/developer/1442403007) |

## What reviewers say

### Intermittent Fasting Timer IF

[App page](https://appshunter.io/ios/app/intermittent-fasting-timer-if/id6751149779)

Track your intermittent fasting progress with a smart timer that visualizes metabolic zones. Offers multiple fasting types, live activity updates, and personalized insights to help you build lasting habits.

**Highlights:** Metabolic zone visualization, Live Activity and Dynamic Island integration, Multiple fasting types (16:8, 20:4, OMAD, etc.), Intelligent timer and scheduling, Achievement system for habit building, Detailed fasting history and analytics, HealthKit integration

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $6.99 | per year |
| Lifetime | $9.99 | one-time |


### Fast12

[App page](https://appshunter.io/ios/app/fast12-intermittent-fasting/id6770261704)

Build a sustainable fasting routine with a simple timer and personalized coaching. Track your fasting window, hydration, and sleep to understand your body's rhythms. Features AI meal scanning and meal guidance to support your eating window.

**Highlights:** Simple fasting timer, Beginner-friendly 12-hour fast, Smart fasting insights, Personal coaching, Hydration tracking, AI Meal Photo Scanner, Apple Watch support

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fast12 Premium Monthly | $12.99 | per month |
| Fast12 Premium Annual | $49.99 | per year |


## Frequently asked questions

### Is Intermittent Fasting Timer IF free?

Intermittent Fasting Timer IF is free to download, with in-app purchases available.

### Is Fast12 free?

Fast12 is free to download, with in-app purchases available.

### Do Intermittent Fasting Timer IF or Fast12 have ads?

Neither Intermittent Fasting Timer IF nor Fast12 shows ads.

### Which is updated more often, Intermittent Fasting Timer IF or Fast12?

Intermittent Fasting Timer IF ships an update every 3 months, and Fast12 every 10 days. Most recently, Intermittent Fasting Timer IF was updated on November 5, 2026 and Fast12 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.*