# Rosyn vs CannaTrak

The clearest difference is in-app purchases: CannaTrak at none against Rosyn's 2. CannaTrak also leads on update cadence (every 3 days vs fortnightly) and iOS requirement (15.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Rosyn sells 2 in-app purchases, starting at $9.99 per month. CannaTrak asks for nothing beyond the download.

Rosyn ships an update fortnightly, CannaTrak every 3 days. The most recent releases landed on October 9, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Rosyn | CannaTrak |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/rosyn/id6739316129/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 3 days** |
| Monetization | Free | — |
| Size | 37 MB | 22 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Mike Van Amburg](https://appshunter.io/developer/1509585384) | [Michael J Katz](https://appshunter.io/developer/6786504267) |

## What reviewers say

### Rosyn

[App page](https://appshunter.io/ios/app/rosyn/id6739316129)

This app helps cannabis users track their usage with intention and awareness. It visualizes tolerance shifts, allows quick logging of consumption methods and effects, and offers gentle suggestions for breaks. Designed for privacy, it keeps all data on the device.

**Highlights:** Private cannabis journaling, Tolerance visualization (moon cycle), Quick logging of consumption and effects, Gentle suggestions for breaks, Data export option, On-device data storage

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Rosyn Premium Monthly | $9.99 | per month |
| Rosyn Premium Yearly | $99.99 | per year |


### CannaTrak

[App page](https://appshunter.io/ios/app/cannatrak/id6786504265)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rosyn free?

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

### Is CannaTrak free?

CannaTrak is free to download, with no in-app purchases.

### Do Rosyn or CannaTrak have ads?

Neither Rosyn nor CannaTrak shows ads.

### Which is updated more often, Rosyn or CannaTrak?

Rosyn ships an update fortnightly, and CannaTrak every 3 days. Most recently, Rosyn was updated on October 9, 2026 and CannaTrak on October 3, 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.*