I Know Me vs Open
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
I Know Me
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This App for Cystic Fibrosis (CF) patients to help them provide accurate information to their clinicians CF patients have found the app very empowering. The app is FREE. You have full control, only you have access to your data which is stored on your mobile device and personal Dropbox or Google Drive account. I KNOW ME do not have access to any of your medical history. Enjoy using the I KNOW ME app and stay health!
Open
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Open-OH: supporting you on your journey with Long Covid, Fibromyalgia, ME/CFS and more. Track your symptoms, and engage with resources to help you increase your functional capacity and make informed decisions about your condition and occupation DIARIES Track your activity levels, sleep, meals, symptoms and more ASSESSMENTS Access industry standard, condition specific Patient Reported Outcome Measures (PROMs) RESOURCES Receive personalised suggestions to access lots of support resources to educate and guide you on your journey with your long term conditions. Including symptoms specific resources, financial guides, and advice for your manager or employer. FIND SUPPORT Find local services to support your journey
Screenshots
Verdict
The clearest difference is iOS requirement: I Know Me at 12.0 against Open's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
I Know Me ships an update fortnightly, Open every 2 weeks. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.
| Parameter | I Know Me | Open |
|---|---|---|
| Price | Free | Free |
| Update frequency | Fortnightly โ better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 55 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Educate4Health Limited | Elaros |
In-app purchases
I Know Me
No in-app purchases
Open
No in-app purchases









