Comparison

C19 vs KiActiv Sync

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

Head to head
About

C19

This NHS-approved application allows clinical teams and universities to manage patient conditions remotely, conduct research, and access support resources. Public-facing versions offer optional subscription services for enhanced features.

Highlights
  • Remote condition management
  • Clinical service integration
  • University research participation
  • Public-facing applications
  • Optional subscription services
  • Health and wellbeing resources
Features
Read full description

Download and get started with the NHS-approved C19-YRS app, as featured on BBC News. The C19-YRS app can be configured by clinical teams as part of a clinical service, by Universities for research, or used independently through our public-facing applications. Our clinical version of the app is intended for patients registered at a clinical service which has invited them to download the app to manage their condition remotely, complete assessments, and access support resources to improve their health and wellbeing, according to the individual service’s purpose. The app may also be used for research studies who register participants onto the app to take part in projects. If you are using the app as part of a service or project, a member of staff will provide users with their login details or instructions on how to sign up for the app. Please contact a member of staff at your service or project team for support if you get stuck. We have two public facing apps as of 2025: 1 Autonom-e+ in collaboration with University of Leeds. This is free to register and comes with an optional subscription service. 2 The ME Clinical Assessment Toolkit in collaboration with ME Association. This is free to register and comes with an optional subscription service. Auto-renewable subscription options for our public apps: 1 month (£2.99) duration 1 year (£19.99) duration Your subscription will be charged to your Apple App Store account at confirmation of purchase and will automatically renew (at the duration selected) unless auto-renew is turned off at least 24 hours before the end of the current period Current subscriptions may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your App Store Account Settings after purchase. Privacy Policy: https://c19-yrs.com/legal/privacy-policy End User Licence Agreement: https://c19-yrs.com/legal/end-user-licence-agreement/

About

KiActiv Sync

Features
Read full description

The KiActiv® App allows you to upload physical activity data from your Bluetooth LE enabled wearable device to your KiActiv® account. Designed for existing KiActiv® users, the quick and simple upload will mean you can view your data instantly in the KiActiv® Web Platform.

Screenshots

C194 screens
KiActiv Sync3 screens

Verdict

The call

The clearest difference is in-app purchases: KiActiv Sync at none against C19's 5. KiActiv Sync also leads on iOS requirement (9.0 vs 15.0). C19's advantage is update cadence (every 9 days vs every 9 months). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. C19 sells 5 in-app purchases, starting at $2.99 per month. KiActiv Sync asks for nothing beyond the download.

UpkeepUpdate frequency

C19 ships an update every 9 days, KiActiv Sync every 9 months. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.

Scorecard3 real differences · 5 level
C19 versus KiActiv Sync: the parameters behind the verdict, then further details
ParameterC19KiActiv Sync
PriceFreeFree
Positive reviews25.0% of reviews—
Update frequencyEvery 9 days — betterEvery 9 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.09.0 — better
Further details — not scored
Size33 MB70 MB
Age rating4+4+
DeveloperElarosKi Performance Lifestyle Ltd

In-app purchases

5 purchases

C19

Subscriptions5
  • MEA-CAT Self Reporting$2.991 Month
  • C19-YRS Self Reporting$2.991 Month
  • Self-Reporting Subscription$2.991 Year
Show 2 more
  • MEA-CAT Self Reporting$19.991 Year
  • C19-YRS Self Reporting$19.991 Year
None

KiActiv Sync

No in-app purchases

Questions

Is C19 free?
C19 is free to download, with in-app purchases available.
Is KiActiv Sync free?
KiActiv Sync is free to download, with no in-app purchases.
Do C19 or KiActiv Sync have ads?
Neither C19 nor KiActiv Sync shows ads.
Which is updated more often, C19 or KiActiv Sync?
C19 ships an update every 9 days, and KiActiv Sync every 9 months. Most recently, C19 was updated on October 6, 2026 and KiActiv Sync on October 10, 2026.

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