# Fast36 vs FastZen

Fast36 and FastZen are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Fast36 sells 2 in-app purchases, starting at $14.99 per month and FastZen sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Fast36 | FastZen |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AKN Technologies FZ-LLC](https://appshunter.io/developer/1872738914) | [Benjamin Dupin](https://appshunter.io/developer/1871474236) |

## What reviewers say

### Fast36

[App page](https://appshunter.io/ios/app/fast36/id6758402027)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fast36 Pro - Monthly | $14.99 | per month |
| Fast36 Pro - Yearly | $99.99 | per year |


### FastZen

[App page](https://appshunter.io/ios/app/fastzen-fasting-timer/id6761484595)

This app helps you manage your fasting schedule with customizable timers and reminders. It offers a recurring weekly routine, a timer that remembers your progress, and a clear view of your active fast. Review your history and track your streaks, all while keeping your data private on your device.

**Highlights:** Customizable fasting schedules, Recurring weekly routine setup, Live Activities for active fast tracking, Detailed fasting history and streaks, No account, ads, or server sync, Custom Week one-time purchase

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Thanks | $2.99 | one-time |
| Support development | $4.99 | one-time |


## Frequently asked questions

### Is Fast36 free?

Fast36 is free to download, with in-app purchases available.

### Is FastZen free?

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

### Do Fast36 or FastZen have ads?

Neither Fast36 nor FastZen shows ads.

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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.*