# FastZen vs Capi

FastZen and Capi are too close to call on the numbers: across 7 compared parameters — price, update cadence, ads and in-app purchases 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. FastZen sells 4 one-off in-app purchases and Capi sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

FastZen ships an update weekly, Capi every 5 days. The most recent releases landed on October 28, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | FastZen | Capi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/capi-sleep-factors-analysis/id6772717443/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 2 MB | 13 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Benjamin Dupin](https://appshunter.io/developer/1871474236) | [Capi Labs LLC](https://appshunter.io/developer/1500165063) |

## What reviewers say

### 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 (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coffee | $0.99 | one-time |
| Thanks | $2.99 | one-time |
| Support development | $4.99 | one-time |
| FastZen Custom Week | $5.99 | one-time |


### Capi

[App page](https://appshunter.io/ios/app/capi-sleep-factors-analysis/id6772717443)

This app helps you understand how your daily habits and health events influence your sleep. Log custom factors, import data from Apple Health, and analyze statistical insights to discover personal sleep patterns.

**Highlights:** Track custom daily habits and health events, Import sleep and activity data from Apple Health, Analyze statistical insights for sleep patterns, Review nightly sleep summaries, Private, on-device data processing, Unlimited custom event types with subscription

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Unlimited Access | $0.99 | per month |
| Yearly Unlimited Access | $9.99 | per year |
| Lifetime Unlimited Access | $19.99 | one-time |


## Frequently asked questions

### Is FastZen free?

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

### Is Capi free?

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

### Do FastZen or Capi have ads?

Neither FastZen nor Capi shows ads.

### Which is updated more often, FastZen or Capi?

FastZen ships an update weekly, and Capi every 5 days. Most recently, FastZen was updated on October 28, 2026 and Capi on October 6, 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.*