Rosyn is made and published by Mike Van Amburg. AppBrain is an independent app data site and isn't affiliated with Mike Van Amburg. The app name, icon, screenshots and description belong to Mike Van Amburg and are shown as published on the App Store.
AppBrain's verdict
Removed- Rating on App Store
- 5.00
- 6 ratings
- Last updated
- May 14, 2026
Rosyn is no longer on the App Store. It had too few ratings to say what users thought.
Competitors
Similar apps and more from Mike Van AmburgMore from Mike Van Amburg
Releases
Updates seen on the App Store- Version
- 3.5
- Launched
- July 2025
No changelog data
User feedback
Ratings and reviews on the App StoreComments on Rosyn for iOS
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Technology
Found in the app by AppBrain- Price
- Free
- App size
- 40.2 MB
- Content rating
- High
Technologies used by Rosyn
About the app and developer
About Rosyn
Rosyn was a lifestyle app developed by Mike Van Amburg. It was removed from the App Store May 27, 2026.
User Ratings
Rosyn was rated 5.00 out of 5 stars, based on 6 ratings.
App Information
Rosyn was free. The app size was 40.22 MB. The last available version was 3.5. The last update was on May 14, 2026.
Technical Requirements
The app had a content rating of High Maturity. The app had been available on the App Store since July 2025.
Developer information for Mike Van Amburg
Address:
Store listing
By Mike Van Amburg, from the App StoreThis app is currently not available on the App Store.
Similar apps
Description by Mike Van Amburg Written by the developer, not by AppBrain. Click to read.
Meet Rosyn, a calm and private cannabis companion made for adult cannabis users who want to be more intentional about their use.
Rosyn is not here to convince you to start using cannabis, use more, or quit. It is built for adults who already use cannabis and want a better way to understand their habits, learn from their experiences, and make more informed choices.
Think of Rosyn as a budtender in your pocket, a personal cannabis journal, and a pattern finder all in one.
Ask Rosyn about strains, terpenes, potency, methods, timing, and common effect patterns. Learn what myrcene, limonene, pinene, or caryophyllene may mean, and get plain-language context before your next session.
Because cannabis is personal, Rosyn helps you go beyond generic strain descriptions. A strain that feels relaxing for one person may feel heavy, foggy, or distracting for someone else. With Rosyn, you can log what you used, how you used it, when you used it, and how it actually felt.
Over time, your logs become a clearer picture of what works for you. You can track flower, vapes, edibles, tinctures, concentrates, topicals, and custom methods, along with potency, amount, mood, timing, effects, notes, and ratings.
Rosyn also supports voice logging, so you can quickly describe a session without filling out every detail by hand. Say what happened, and Rosyn helps organize the important parts.
As your history grows, Rosyn helps you notice patterns across strains, terpenes, methods, doses, moods, time of day, and effects. You may discover which products fit evenings better, which methods last longer than expected, or which routines are becoming more automatic than intentional.
Rosyn can also help you understand tolerance changes over time. Tolerance can shift slowly, and it is easy to miss until cannabis no longer feels the way it used to. Rosyn compares your recent sessions with your own history so you can see when frequency, amount, or effectiveness may be changing.
When it looks like you may need space, Rosyn can help you consider a pause, reset, or slower pace. No shame. No scare tactics. No pressure to quit. Just a gentle way to reflect and decide what feels right for you.
Rosyn is made for adult cannabis users who want cannabis to stay helpful, intentional, and personal. Whether you use cannabis to unwind, get creative, sleep, manage discomfort, or simply be more present, Rosyn gives you a private place to track, reflect, and learn.
Your cannabis history is personal, and Rosyn is designed with that in mind. There are no social feeds, public profiles, or judgmental streaks. Your logs are for you. If you choose, you can export your history for your own records or to share with someone you trust.
Rosyn does not replace medical advice, professional care, or your own judgment. It simply helps you understand what you are using, how it feels, and what patterns are forming over time.
Ask. Log. Learn. Adjust.
Use cannabis with more intention.
Download Rosyn and get to know your cannabis routine better.
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Rosyn is not here to convince you to start using cannabis, use more, or quit. It is built for adults who already use cannabis and want a better way to understand their habits, learn from their experiences, and make more informed choices.
Think of Rosyn as a budtender in your pocket, a personal cannabis journal, and a pattern finder all in one.
Ask Rosyn about strains, terpenes, potency, methods, timing, and common effect patterns. Learn what myrcene, limonene, pinene, or caryophyllene may mean, and get plain-language context before your next session.
Because cannabis is personal, Rosyn helps you go beyond generic strain descriptions. A strain that feels relaxing for one person may feel heavy, foggy, or distracting for someone else. With Rosyn, you can log what you used, how you used it, when you used it, and how it actually felt.
Over time, your logs become a clearer picture of what works for you. You can track flower, vapes, edibles, tinctures, concentrates, topicals, and custom methods, along with potency, amount, mood, timing, effects, notes, and ratings.
Rosyn also supports voice logging, so you can quickly describe a session without filling out every detail by hand. Say what happened, and Rosyn helps organize the important parts.
As your history grows, Rosyn helps you notice patterns across strains, terpenes, methods, doses, moods, time of day, and effects. You may discover which products fit evenings better, which methods last longer than expected, or which routines are becoming more automatic than intentional.
Rosyn can also help you understand tolerance changes over time. Tolerance can shift slowly, and it is easy to miss until cannabis no longer feels the way it used to. Rosyn compares your recent sessions with your own history so you can see when frequency, amount, or effectiveness may be changing.
When it looks like you may need space, Rosyn can help you consider a pause, reset, or slower pace. No shame. No scare tactics. No pressure to quit. Just a gentle way to reflect and decide what feels right for you.
Rosyn is made for adult cannabis users who want cannabis to stay helpful, intentional, and personal. Whether you use cannabis to unwind, get creative, sleep, manage discomfort, or simply be more present, Rosyn gives you a private place to track, reflect, and learn.
Your cannabis history is personal, and Rosyn is designed with that in mind. There are no social feeds, public profiles, or judgmental streaks. Your logs are for you. If you choose, you can export your history for your own records or to share with someone you trust.
Rosyn does not replace medical advice, professional care, or your own judgment. It simply helps you understand what you are using, how it feels, and what patterns are forming over time.
Ask. Log. Learn. Adjust.
Use cannabis with more intention.
Download Rosyn and get to know your cannabis routine better.
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/