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Updated July 2026 · real, multi-region App Store reviews
Head-to-head

Instant Heart Rate vs Welltory

Instant Heart Rate 4.9★ · Free + IAP 75
Winner Instant Heart Rate
Welltory 4.7★ · Free + IAP 55

Instant Heart Rate is the better choice for basic heart rate monitoring due to its generally accurate readings and simpler interface, while Welltory offers more comprehensive health data but is plagued by aggressive monetization and poor customer service.

Full reviews: Instant Heart Rate · Welltory

Instant Heart Rate excels at its core function of heart rate monitoring, with many users finding it accurate and easy to use. Welltory provides a broader range of health data, but its value is diminished by overwhelming ads, difficulty canceling subscriptions, and confusing data presentation.

Head to head

Accuracy and Core Functionality edge: Instant Heart RateR5R8R9R12
Instant Heart Rate Instant Heart Rate generally receives positive feedback for its accuracy in measuring heart rate, with some users comparing it favorably to manual checks and medical devices R5R8R14R23. However, some recent updates have introduced issues, such as difficulty reading low heart rates R9, camera malfunctions R12R19, and inconsistent readings . Some users also report it being inaccurate compared to ER readings R31 or traditional monitors .
Welltory Welltory users find its data interesting and helpful for understanding stress, recovery, and sleep . It has even accurately detected conditions like Afib . However, some users question the accuracy of stress readings, especially when feeling relaxed , and some find the overall data overwhelming and hard to interpret .
Ease of Use and Interface edge: Instant Heart RateR3R9R13R18
Instant Heart Rate Instant Heart Rate is often praised for its simplicity and ease of use R9. However, recent updates have introduced login requirements that users find frustrating and intrusive R3R13R18. Some users also report issues with the measurement process being too fast or freezing .
Welltory Welltory's interface is described as providing good visuals and being non-intrusive in terms of alerts . However, many users find the amount of information overwhelming and poorly organized, making it difficult to navigate and extract useful insights . Some also dislike the revised app layout .
Reliability and Technical Issues edge: Instant Heart RateR9R12R19R24
Instant Heart Rate Users report various reliability issues with Instant Heart Rate, including the camera not working R12R19, the app not detecting heart rates below 40 bpm after an update R9, and compatibility problems with newer iPhone models . Some users also experienced lost readings after updates R24 or the app freezing .
Welltory Welltory users report issues with the subscription system breaking and the app not tracking as much as advertised or connecting easily to other apps . There are also instances of the app giving contradictory information .
Price and Value tieR1R4R6R7
Instant Heart Rate Instant Heart Rate is advertised as free but many users are frustrated by unexpected charges, difficulty canceling trials, and being charged for subscriptions they didn't intend R1R4R6R7. The free version is also seen as having limited functionality R7. Some users feel the paid version isn't worth it due to inaccuracies or issues R7.
Welltory Welltory is perceived as expensive, with a yearly subscription costing around $100-$119 . Users are frustrated by constant, aggressive in-app ads and notifications to upgrade to a lifetime membership, even when they already have a premium annual subscription . Many feel the free version is useless or that the paid version doesn't offer enough value for the price .
Customer Support and Privacy tieR4R6R10R13
Instant Heart Rate Instant Heart Rate receives strong criticism for its poor customer service, with users reporting difficulty canceling subscriptions, being denied refunds, and encountering obnoxious behavior when trying to delete accounts R4R6R16R42. Privacy concerns are also raised due to login requirements and the privacy policy R10R13.
Welltory Welltory's customer support is widely criticized, with users reporting inability to cancel subscriptions, unresponsive contact forms, dealing only with AI assistants, and even fraudulent charges after attempting to cancel . The app is also accused of being a scam and misleading users about their health to push subscriptions .
Pick Instant Heart Rate if

You need a simple, generally accurate heart rate monitor and are willing to navigate potential subscription issues or stick to the limited free version R5R9R14R23.

Pick Welltory if

You are looking for a more comprehensive health analytics app that provides detailed data on stress, recovery, and HRV, and you are prepared to tolerate aggressive in-app advertising and potential customer service challenges .

Evidence note: Both apps have significant issues with their monetization strategies and customer service, leading to many negative reviews despite high lifetime ratings. Welltory's issues with aggressive upselling and cancellation difficulties are particularly prevalent.

Frequently asked

Is Instant Heart Rate truly free?
Instant Heart Rate is advertised as free, but many users report being unexpectedly charged for subscriptions, often around $60-$64 for a year, even after canceling trials or without intending to subscribe R1R4R6R7. The free version has limited functionality, with some users stating it only allows 7 seconds of measurement .
How accurate are these apps for heart rate monitoring?
Instant Heart Rate is generally considered accurate by many users, with some comparing it favorably to manual checks and medical devices R5R14R23, though others report significant inaccuracies, sometimes by as much as 20 points compared to ER readings R31. Welltory has also been noted for accurately detecting conditions like Afib , but some users question its stress readings .
Can I easily cancel subscriptions for these apps?
Many users report significant difficulty canceling subscriptions for both apps. Instant Heart Rate users describe poor customer service, denied refunds, and difficulty exiting the app R4R6R16R42. Welltory users frequently complain about being unable to turn off auto-renew, unresponsive contact forms, and even fraudulent charges after attempting to cancel .
Do these apps have a lot of ads?
Welltory is heavily criticized for its constant and aggressive in-app advertising, even for users who have already paid for a premium annual subscription, with frequent pop-ups and notifications to upgrade to a lifetime membership . Instant Heart Rate reviews do not mention ads as a primary issue, but rather unexpected charges for subscriptions R1R4R6R7.

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. [R5] Instant Heart Rate 5/5 · US I think this is pretty accurate: I’ve been feeling weak and dizzy due to my heart rate going up. This helps me know when my heart is going above 100 bpm and when I need to lay down.
  2. [R8] Instant Heart Rate 5/5 · US Its okay I guess: The app is nice, helpful but is it really true? Either way..it has really helped me a lot in the past month and days too and pretty good anyway over all it seems pretty accurate oh and by the way can you add a iPad version please and thank you?
  3. [R9] Instant Heart Rate 3/5 · US Works well, won’t read low HR: App is easy to use and works well. Only problem is, since the new update, it won’t work for a heart rate less than 40 bpm. Sometimes my heart rate can be 38-39. If this is true (per my watch), the app glitches and won’t register it. It just doesn’t work!!! This didn’t used to be true, only since a recent update. Very annoying!!
  4. [R12] Instant Heart Rate 3/5 · US Great app when the Camera works: Half the time the camera won’t turn on on my IPhone. Meaning I cannot use the app properly. It’s a 50/50 shot whether or not it works for me.
  5. [R3] Instant Heart Rate 3/5 · US Maddening to sign in: There was no way to close the keyboard so I could reach the "sign up" or "login" options at the top. I had to force quit the app and start over multiple times to get signed in. I already had an account from a long time ago, so I used the forgotten password feature. In the email, there was a button to open the app, but it took me to the web instead. It took forever to take
  6. [R13] Instant Heart Rate 2/5 · US Pushy: Kind of pushy that another app needs you to make an account to use it(presumably to sell your info)
  7. [R18] Instant Heart Rate 3/5 · US Deleted: I used to live this app but New version won’t let you use unless you log on with your email and create an account. Immediately deleted ! There are alternatives in Apple Store that won’t require account creation
  8. [R19] Instant Heart Rate 1/5 · US Terrible do NOT get.: my friend wanted me to get this app to reacted to different names when she mentioned them, and it DOESN’T work at all. It keeps telling me to gently place my index finger over my camera lens, but I do MULTIPLE times and it doesn’t work! I also have a pretty new IPhone so it should work.
  9. [R24] Instant Heart Rate 3/5 · US lost readings with update: App was working great for me. Recently did the update and lost almost all my BP readings. Lost the entire month of July and most of August.
  10. [R1] Instant Heart Rate 1/5 · US Not Free: Not Free
  11. [R4] Instant Heart Rate 1/5 · US Not happy: Cancelled membership but was still charged 64 for something I never even used
  12. [R6] Instant Heart Rate 3/5 · US Nice app: Overall it’s a nice app, me personally I found better. I uninstalled the app after using it for a few hrs and realized it isn’t for me. But ever since it keeps trying to charge my card 64$ I went back to delete my whole account and it tried to charge my card again! Good thing is my card was locked.
  13. [R7] Instant Heart Rate 1/5 · US Be Aware this App isn’t Accurate, Don’t Waste Your Money!: This app is fine if you’re using the free version. It’s not accurate, which is why purchasing any paid subscription is not worth it. Save your money and find a different app that can actually detect your heart rate. I accidentally paid for a year long subscription for $60 when I thought I’d try out the paid version for a free 3 day trial,
  14. [R10] Instant Heart Rate 1/5 · US Bad privacy: I bet nobody actually reads the privacy policy. Read it.
  15. [R14] Instant Heart Rate 5/5 · US Most accurate!: I downloaded three apps and one said my bpm was 53, one said 72, and this one said 117. I checked my bpm manually and I got 116.
  16. [R23] Instant Heart Rate 5/5 · US Accurate: It actually reads right
  17. [R31] Instant Heart Rate 1/5 · US Not accurate: I was in the ER and tested this. It was 20 points higher than the one in the ER. Made me believe I was in more danger than I actually was along with my other symptoms.
  18. [R16] Instant Heart Rate 1/5 · US Horrible customer service: I decided to delete and they are obnoxious and offensive making it difficult to exit.
  19. [R42] Instant Heart Rate 1/5 · US Not happy: It does tell you what your heart rate is. It gives you a 3 day free trial. However, if you decide you do not want the subscription, there is no way to cancel it. You will still be charged and apple will not refund. They stole $64.36 from me. When I finally got a response from someone from customer service from this app, they told me they can’t issue any refunds, only Apple can. And I do

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