Comparison

I Know Me vs Open

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

I Know Me

Features
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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!

About

Open

Features
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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

I Know Me4 screens
Open4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard1 real difference ยท 5 level
I Know Me versus Open: the parameters behind the verdict, then further details
ParameterI Know MeOpen
PriceFreeFree
Update frequencyFortnightly โ€” betterEvery 2 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 โ€” better15.0
Further details โ€” not scored
Size55 MB30 MB
Age rating4+4+
DeveloperEducate4Health LimitedElaros

In-app purchases

None

I Know Me

No in-app purchases

None

Open

No in-app purchases

Questions

Is I Know Me free?
I Know Me is free to download, with no in-app purchases.
Is Open free?
Open is free to download, with no in-app purchases.
Do I Know Me or Open have ads?
Neither I Know Me nor Open shows ads.
Which is updated more often, I Know Me or Open?
I Know Me ships an update fortnightly, and Open every 2 weeks. Most recently, I Know Me was updated on October 5, 2026 and Open on October 8, 2026.

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