Verithiathe honest score on any app
Updated July 2026 · real, multi-region App Store reviews
Head-to-head

iCardiac vs Heartify

iCardiac 4.8★ · Free + IAP 40
Winner Tie
Heartify 4.7★ · Free + IAP 40

Both iCardiac and Heartify face significant user complaints regarding misleading free claims, high subscription costs, and accuracy concerns, making it difficult to recommend either as a reliable health monitoring tool.

Full reviews: iCardiac · Heartify

Both iCardiac and Heartify are mobile apps offering heart rate monitoring and other health tracking features, but both are plagued by user complaints about deceptive 'free' advertising, high weekly/monthly subscription fees, and questionable accuracy of readings. Many users express frustration over unexpected charges and difficulty canceling subscriptions.

Head to head

Features and Accuracy tieR1R5R11R14
iCardiac iCardiac users are highly critical of its claims to measure blood sugar and blood pressure, with many stating it does not perform these functions or provides inaccurate readings R1R14R16R24. While some users find the heart rate monitoring useful and accurate R5R11, others report unrealistic responses and freezing .
Heartify Heartify also faces strong criticism for accuracy, with users reporting discrepancies between its heart rate readings and those from oximeters or Apple Watches . Some users found it would even 'measure' a heart rate from inanimate objects like a red cup or blue tape . There are also complaints that it doesn't measure blood pressure despite implying it and that sleep reports are erroneous .
Pricing and Value tieR7R10R13R22
iCardiac Many iCardiac users feel misled by 'free' advertising, only to find the app requires subscriptions of $9.99/week R10R13R32 or $40/month for full functionality, with some being charged immediately R7R22. While some find $6.99/month acceptable , others believe the limited features, primarily heart rate monitoring, do not justify the high cost .
Heartify Heartify users frequently complain about deceptive 'free' claims, stating that basic measurement features are locked behind a paywall . Subscriptions are noted as expensive, costing $6.99/month or weekly , with many feeling it's not worth the price for the features offered .
Ease of Use and Reliability tieR7R9R18R20
iCardiac iCardiac receives mixed reviews on ease of use; some find it easy to use for heart rate monitoring , while others report issues with the app freezing and not remembering user logins R7. There are also complaints about difficulty canceling free trials or subscriptions R9R18R20R26.
Heartify Heartify users report issues with the app not loading past the splash screen , cards not being functional , and slow measurement times . Some users are annoyed by haptic vibrations with no option to disable them . There are also significant complaints about unexpected renewals and difficulty canceling subscriptions R70.
Support tieR7R9R52R70
iCardiac iCardiac users express frustration over the lack of technical support, specifically mentioning an inability to find a way to talk to support or cancel trials R9. Users also ask for refunds, indicating a lack of clear support channels for billing issues R7R52.
Heartify Heartify users report very poor customer service, particularly regarding subscription issues and deceptive billing practices . Users complain about being charged without notice or app functionality and difficulty getting refunds or resolving payment errors R70.
Pick iCardiac if

You are primarily interested in basic heart rate monitoring and are willing to navigate potential subscription complexities, as some users find iCardiac's heart rate feature useful R5.

Pick Heartify if

You are looking for a general health tracking app and are comfortable with a potentially high subscription cost, as some users appreciate Heartify's overall utility and information .

Evidence note: Both apps have a significant number of positive lifetime ratings, but recent reviews for both are heavily skewed negative, primarily due to misleading 'free' claims, high subscription costs, and accuracy concerns. The free vs. paid asymmetry is very pronounced, with much of the negativity stemming from users expecting a fully free app or finding the paid features not worth the cost. Many reviews across both apps are similar in their complaints.

Frequently asked

Are iCardiac and Heartify truly free to use?
No, both iCardiac and Heartify are advertised as 'free' but users report that core features, including basic measurements, are locked behind high weekly or monthly subscription paywalls, such as $9.99/week for iCardiac or $6.99/week for Heartify R10R13R32R40.
Can these apps accurately measure blood pressure or blood sugar?
Based on user reviews, neither iCardiac nor Heartify reliably or accurately measures blood pressure or blood sugar; many users report that the apps do not perform these functions at all or provide incorrect readings, leading to accusations of false advertising R1R16R24R30.
Are there issues with canceling subscriptions for these apps?
Yes, many users of both iCardiac and Heartify report significant difficulty canceling subscriptions or free trials, with some claiming they were charged without notice or continued to be billed after cancellation R9R20R26R70.

What reviewers actually said

Built only from these 120 real reviews (foreign ones translated). Superscripts jump to the quote here. Apple has no per-review links, so [ref] opens that app's reviews on the App Store.

  1. [R1] iCardiac 1/5 · US Misleading information: Not for blood sugar and blood pressure
  2. [R5] iCardiac 5/5 · US icardiac: Awesome Blood pressure and heart rate reader
  3. [R11] iCardiac 5/5 · US Ship yard worker: I love that I can check it all day and the feedback and great advice it tell me as I go on through my day .
  4. [R14] iCardiac 4/5 · US Blood sugar?: Can’t record blood sugar?
  5. [R7] iCardiac 1/5 · US Waste of time: I downloaded the app and it was not free as it claimed in the beginning. So I paid about $45 for nothing. It’s definitely inaccurate and every time I open it, the app doesn’t remember me.. By the way the blood pressure app has the same problem. Waste of money. Please tell me how I can request a refund.
  6. [R10] iCardiac 1/5 · US another one: another lie to get you to download, seen a ad says completely free, not completely free to download but completely free period!! why can’t people that produce these apps just be truthful? it’s not hard to do and is the only right way to be!! Deleting app don’t want to pay for something like this and probably don’t don’t work? there’s a reason hospitals use precision tools for checking
  7. [R13] iCardiac 1/5 · US IS NOT FREE AT ALL: On the advertising it says “and it is free”. Yeah free to download and fill out all the questions but not FREE to use. You should be putting that information in your advertising so people don’t waste their time. Or clarify that to use it is 9.99 a WEEK!
  8. [R22] iCardiac 1/5 · US Be Careful: I thought this was supposed to be free. Next thing I knew I was immediately charged $9.99. I’d like my money refunded. It happened so quickly it said to click here and next thing I knew my credit card was charged.
  9. [R9] iCardiac 3/5 · US Cancel free trial: I can’t find in settings how to cancel the free trial.. I don’t want to use the app.. there is no way to talk to technical support …
  10. [R18] iCardiac 1/5 · US Please cancel this app: I don’t want this any longer remove it
  11. [R20] iCardiac 1/5 · US do not get: cannot cancel
  12. [R52] iCardiac 1/5 · US Fake news!: Does not measure Blood Pressure at all. False advertisement. So disappointing! I need a refund.
  13. [R70] Heartify 1/5 · US Renewal Without Notice, can’t cancel: App stopped working after trial. Started billing me without app functionality. No notice near end of 7 day trial.
  14. [R32] iCardiac 1/5 · US False Advertisement: Not completely free as advertised it cost $9.99/week
  15. [R40] iCardiac 1/5 · US False Advertising: I downloaded it because they advertised it as “completely free.” I deleted it when I found out it was $9.99 A WEEK!
  16. [R16] iCardiac 1/5 · US Incorrect blood sugar levels: Tested my blood sugar at 120, the app says 85. Useless
  17. [R24] iCardiac 1/5 · US THIS APP CANT DO WHAT IT CLAIMS. THEY ARE LYING TO YOU IN HOPES THAT YOU’LL LIKE THEIR APP AND USE: There have been a couple apps like this that mislead you into thinking they can read blood glucose. At best they can read from other devices or store the info you put into their app. I will never buy an app from developers who mislead me like this because they have no integrity and will do it aga
  18. [R30] iCardiac 1/5 · US Lies lies lies .: I’m just so tired of these apps that say they They are going to check my blood sugar and they lie. Nothing on here. Says it will check my blood sugar. So I deleted it right away. This is like the 10th one you should be very cautious. And delete delete it and leave a negative review.
  19. [R26] iCardiac 1/5 · US Don’t do it: It is a trap and I haven’t found a way to cancel it either!!!!

Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store