# Since Then vs FastZen

The clearest difference is price: FastZen at Free against Since Then's $9.99. FastZen also leads on ads (none vs shown). Since Then's advantage is in-app purchases (none vs 3). On update cadence, device support and iOS requirement there is nothing between them.

FastZen is free to download; Since Then costs $9.99 up front. FastZen sells 3 one-off in-app purchases. Since Then asks for nothing beyond the download.

Since Then ships an update every 6 days, FastZen weekly. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Since Then | FastZen |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 2 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Moruk LLC](https://appshunter.io/developer/1826185873) | [Benjamin Dupin](https://appshunter.io/developer/1871474236) |

## What reviewers say

### Since Then

[App page](https://appshunter.io/ios/app/since-then-quit-tracker/id6761450312)

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

**In-app purchases:** none


### 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 Since Then free?

Since Then costs $9.99, with no in-app purchases.

### Is FastZen free?

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

### Do Since Then or FastZen have ads?

Since Then shows ads; FastZen does not.

### Which is updated more often, Since Then or FastZen?

Since Then ships an update every 6 days, and FastZen weekly. Most recently, Since Then was updated on October 15, 2026 and FastZen on October 7, 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.*