iCardiac
iCardiac is marketed as a free app for measuring various health metrics, but recent reviews indicate it is not free to use beyond basic heart rate monitoring and is criticized for inaccurate readings and misleading advertising, despite some users finding it helpful for heart rate tracking.
iCardiac is a health and fitness app that claims to measure heart rate, blood pressure, and blood sugar, but many recent reviews report it is not free as advertised, requires expensive weekly or monthly subscriptions, and provides inaccurate or non-existent readings for blood pressure and blood sugar. While some users find the heart rate monitoring useful, others are frustrated by false advertising and difficulty canceling subscriptions.
What users like
What users complain about
- The app is not free as advertised, requiring weekly or monthly subscriptions.R3R4R5R9
- Does not accurately measure blood pressure or blood sugar, often requiring manual input or not providing the feature at all.R1R6R11R13
- Users report difficulty canceling subscriptions or obtaining refunds.R3R7R8R14
- Frequent and intrusive ads disrupt the user experience.R33R39R65R168
- Heart rate measurements can be inaccurate compared to other devices.R11R32R34R39
- The app can be confusing to navigate or use.R39R137R215
Latest update · v3.4.2
What the developer says changed (the verdict above weighs this against what reviewers report):
Optimizing heart rate measurement technology
Recurring themes
Who it's for
This app might be for individuals primarily interested in a basic, convenient heart rate monitor on their phone, provided they are aware of potential subscription costs and accuracy limitations R48. It is NOT for users seeking accurate blood pressure or blood sugar measurements from their phone, or those looking for a genuinely free health monitoring solution R1R6R22.
Evidence note: The recent reviews skew heavily negative, particularly regarding the app's pricing model and the accuracy/availability of advertised features like blood pressure and blood sugar measurement. While there are positive reviews, they often focus on heart rate monitoring and sometimes contradict the widespread reports of paid subscriptions by stating the app is free. The developer's release notes mention "Optimizing heart rate measurement technology," which aligns with the positive feedback on heart rate, but does not address the major concerns about pricing or other inaccurate measurements.
Frequently asked
Is iCardiac a free app?
Can iCardiac measure blood pressure and blood sugar?
Is the heart rate monitor accurate?
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.
- [R10] Contento: Parece ser una gran app y muy útil
- [R12] icardiac: Awesome Blood pressure and heart rate reader
- [R20] 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 .
- [R48] Heart rate: I love the way the heart rate works
- [R19] Informing: Very informative
- [R70] Salud es vida: Muy buenas informaciones sobre la salud
- [R88] Stress: Helpful
- [R79] Health: I love the convenience of it because I have to monitor my blood pressure because of pain issues and medication so my doctor can adjust to it so basically I’m doing his job or her job whatever but I do love the app
- [R89] One Stop App: Yes! No more lugging around monitors, extra watches that measure BP and then trying to merge data for the doctor!
- [R131] Heart monitor: This so cool one place, for all my Important stuff.
- [R147] Heart checking: Love this gadget best thing I have ever seen. I don’t have to worry about pumping my arm and carrying things with me just my phone. Thank you very much I know I’m going to enjoy it. Doctor wants me to check my blood pressure every day because I have high blood pressure so now I can do it. Thank you so much.
- [R3] 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.
- [R4] 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
- [R5] 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!
- [R9] 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.
- [R1] Misleading information: Not for blood sugar and blood pressure
- [R6] Incorrect blood sugar levels: Tested my blood sugar at 120, the app says 85. Useless
- [R11] heart rate blood pressure reading.: very disappointed. lost 39.00 and stuck for a year. stupid me bought for year by mistake. not convinced it actually reads true readings. save your money
- [R13] 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
- [R7] Please cancel this app: I don’t want this any longer remove it
- [R8] do not get: cannot cancel
- [R14] Don’t do it: It is a trap and I haven’t found a way to cancel it either!!!!
- [R33] ADs prevent real time monitoring: Terrible app if you have POTS, anemia, etc and are in need real-time monitoring. When you open the app, first you have to wait for TWO AD cycles while trying not to pass out. By time the ADs can be closed, your heart rate had already shifted. Absolutely awful to prevent monitoring until after ADs cycle. Carry your oximeter, this is not a suitable replacement.
- [R39] More annoying than helpful: Starts with 7 ads before you can do anything. The controls are unintuitive, it is so inaccurate it is useless, and takes so long to get to a position to check your pulse it is more dangerous to your health than helpful. Plus since getting to the place to take your pulse is so frustrating it raises your pulse… As a former medical professional I’d guess this app kills
- [R65] Too many ads!!: Just downloaded the app to test and see if it works for me. But my god way too many ads. Makes it very annoying and hard to like. I know it’s free to download but make it enjoyable so that we can enjoy it and maybe subscribe. I might just delete it!
- [R168] Enjoy the App: I like this program but has too many advertisements
- [R32] Bait and switch: Have to pay a subscription to get more than a heart rate, which is also inaccurate according to my Apple Watch.
- [R34] Clickbait: Impossible to use without a paid plan. Also, I compared it to my gauges and it was way off.
- [R137] New Customer: This survey jumped the gun. I just started the app 5 minutes before survey and I’m locked in to answering good or bad before proceeding. Maybe you should take a look at giving that question more time to answer properly.
- [R215] Ok: But I can’t tell if it took my blood pressure or did I have to put it in myself! That’s kind of confusing to me! And why they cost it already in the cameras what do have to pay for! I could see if it did something amazing but there are free things that do this! So not impressed
- [R17] False Advertisement: Not completely free as advertised it cost $9.99/week
- [R21] App is not free: App is not free. It’s $40 a month.
- [R22] WARNING: misleading app claims: as someone researching health monitoring tools I am deeply concerned the apps claiming to measure blood sugar and blood pressure using only a smart phone, or even allowed to exist. A phone camera can reasonably estimate heart rate because it detect changes in blood flow using the light called photoplethysmography. that is not the same as checking blood sugar or blo
Synthesized from 120 recent App Store reviews · updated July 2026 · View on the App Store