# Calyn vs Crab Fit App

The clearest difference is in-app purchases: Crab Fit App at none against Calyn's 2. Crab Fit App also leads on update cadence (every 3 days vs fortnightly). Calyn's advantage is iOS requirement (17.5 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Calyn sells 2 in-app purchases, starting at $4.99 per month. Crab Fit App asks for nothing beyond the download.

Calyn ships an update fortnightly, Crab Fit App every 3 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Calyn | Crab Fit App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/calyn/id6747404955/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 27 MB | 4 MB |
| Requires iOS | **17.5** | 26.0 |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chaai LLC](https://appshunter.io/developer/1738597436) | [Benedict Woo](https://appshunter.io/developer/1810981361) |

## What reviewers say

### Calyn

[App page](https://appshunter.io/ios/app/calyn/id6747404955)

Effortlessly capture and organize your life's events. This intelligent assistant allows you to add appointments from photos, voice notes, or text, detect conflicts, and find free time. Streamline your schedule and reclaim your focus.

**Highlights:** Capture events from images, audio, or text, Utilize templates for recurring routines, Share events via extension from other apps, Detect and resolve event conflicts, Find and share available time slots, Batch capture multiple events at once

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Essential Plan | $4.99 | per month |
| Pro Plan | $9.99 | per month |


### Crab Fit App

[App page](https://appshunter.io/ios/app/crab-fit-app/id6789153902)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calyn free?

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

### Is Crab Fit App free?

Crab Fit App is free to download, with no in-app purchases.

### Do Calyn or Crab Fit App have ads?

Neither Calyn nor Crab Fit App shows ads.

### Which is updated more often, Calyn or Crab Fit App?

Calyn ships an update fortnightly, and Crab Fit App every 3 days. Most recently, Calyn was updated on October 28, 2026 and Crab Fit App on October 28, 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.*