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Updated July 2026 · real, multi-region App Store reviews
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The verdict on

Interval Timer □ HIIT Timer

60
User verdict / 100 High confidence Divided

Interval Timer is praised for its ease of use and customizability for interval workouts, but a significant number of recent reviews highlight a frustrating paywall that locks out core features after one or two free uses, contradicting the 'free' advertising.

4.8★ lifetime (85,250) Free + in-app purchases since 2016 by Float Tech, LLC updated 3.7 mo ago recent negative 35% 100 reviews across 2 regions
Paywall/Subscription Ease of Use Functionality Gaps
5★57
4★5
3★3
2★6
1★29
recent reviews across 2 regions, vs the 4.8★ lifetime average

Interval Timer by Float Tech, LLC is a highly-rated app for interval and HIIT workouts, offering simple setup and clear countdowns. However, recent user feedback indicates a shift to a mandatory subscription model after very limited free use, leading to widespread disappointment among users expecting a free or one-time purchase option.

What users like

  • Simple and easy to set up and use for interval workoutsR1R53R13R16
  • Allows customization of workout timings, exercises, rounds, and includes voice playbackR1R20R24R34
  • Works well in the background and with music playingR61R86R89R95
  • Helpful for tracking and organizing fitness routinesR2R9R18R30

What users complain about

  • Core features are locked behind a mandatory subscription or paywall after only one or two free usesR4R6R8R10
  • Subscription price is considered too high for a timer appR19R32R36R52
  • Lack of flexibility to set different interval lengths for individual exercises within a round or workoutR65R70R75R94
  • App pauses workouts when the phone screen is turned off or the app is closedR80R85
  • Cannot save and name multiple custom workouts for easy reuseR33R49R68R90
  • No Apple Watch integrationR26

Latest update · v26.3.0

What the developer says changed (the verdict above weighs this against what reviewers report):

Minor bug fix update.

Recurring themes

Paywall/Subscription negative
Many recent reviews express strong dissatisfaction with the app's shift to a paywall, requiring a subscription after just one or two free uses. Users feel misled by the 'free' advertising and find the subscription cost excessive for a timer app. This contradicts the lifetime rating which suggests a more positive free experience previously.R4R6R8R10
Ease of Use positive
Users consistently praise the app for being simple, easy to set up, and intuitive for creating and managing interval workouts. Many find it effective for their fitness routines.R1R2R5R9
Functionality Gaps negative
Some users point out limitations such as the inability to set different interval lengths for individual exercises, the app pausing when the screen is off, and the lack of an option to save and name multiple custom workouts. There's also a request for Apple Watch integration.R26R33R49R65

Who it's for

This app is for individuals looking for a simple, customizable interval timer for HIIT, circuit training, or other timed workouts R1R9R13R20. It is particularly useful for those who want clear audio cues and the ability to name exercises R20R89. It is NOT for users who expect a fully free app, as core features are paywalled after minimal use R6R8R10. It is also not ideal for those needing complex interval structures with varying exercise lengths within a single round R65R70R75R94 or Apple Watch integration R26.

Evidence note: The recent reviews show a strong negative sentiment regarding the paywall, which significantly contrasts with the app's high lifetime rating. Many positive reviews mention the app being 'free' or praise features that are now behind the paywall, suggesting a recent change in the monetization model. The developer's release notes mention only 'minor bug fix update,' which does not address the major paywall issue raised by users.

Frequently asked

Is Interval Timer by Float Tech, LLC free to use?
No, while advertised as free, recent reviews indicate that the app only allows one or two free workouts before requiring a subscription to access any features R6R8R10R15.
How much does the subscription cost?
Reviewers mention subscription costs around £3 per month or a one-off payment of £20, with some noting AUD$3.49 per week R19R25R32R52.
Can I set different times for each exercise in a workout?
According to some users, the app assumes a circuit program where all intervals are the same length, and it does not allow setting different durations for individual exercises within a sequence R65R70R75R94.
Does the app work with the screen off or in the background?
Some users report that the app pauses the workout if the phone screen is turned off or if the app is closed, requiring it to remain open R80R85.
Can I save custom workouts?
While the app keeps a history of completed workouts, several users wish for the ability to save and name multiple custom workouts for easy reuse, rather than setting them up each time R33R49R68R90.

What reviewers actually said

Built only from these 100 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] 5/5 · GB Simple but effective: So easy to set up or change the workout timings for HIIT/rest. Really clear to see the countdowns or with audio.
  2. [R53] 3/5 · AU Perfect and simple: Exactly what I needed. No more messing around restarting the default iOS timer every few minutes
  3. [R13] 5/5 · GB Cool app: Just what I was looking for in an interval timer. Simple and effective.
  4. [R16] 5/5 · GB Brilliant: So easy to use, excellent got the job done … highly recommend
  5. [R20] 5/5 · GB Simple app great for home routines: Use it for finishing routine at home after the gym. Really simple to use. Can name your exercises & it has voice playback, so you don’t need to keep checking your phone to remember which exercise is next
  6. [R24] 5/5 · GB Easily customised: Easily customised and simple to use, clear to set up and programme
  7. [R34] 5/5 · GB Brilliant application: This really helps with my fitness routine, fully customisable and easy to use.
  8. [R61] 5/5 · AU Amazing app: Absolutely amazing app. Great for any type of workout. Let’s you listen to music at the same time.
  9. [R86] 5/5 · AU Great App: First time user. Doesn’t disrupt your music, and very easy to use!! Well done.
  10. [R89] 5/5 · AU Love it!: Play my fav tunes while training and it counts down in the back ground, tells you when you’re halfway through interval and counts down from 3 at end of interval & rest. Haven’t tried programs in it yet but I’m sure they’re great!
  11. [R95] 5/5 · AU Fantastic HIIT timer: Everything you need. Customise the length of workout, length of rest, how many exercises, name them, how many rounds & more. All for free! Plays even with music on!
  12. [R2] 5/5 · GB Great: Loved it - so handy for the gym
  13. [R9] 5/5 · GB Spot on: Exactly what I needed for that extra push and organisation
  14. [R18] 5/5 · GB Really helpful: Great help to sequence your fitness workout
  15. [R30] 5/5 · GB Excellent workout aide: A great app to help to keep track of timing interval exercises and motivate you to keep to time.
  16. [R4] 1/5 · GB You have to pay: If it’s a compulsory subscription service, just say this!
  17. [R6] 1/5 · GB Paywalled: Not a free app, all use aside from your first session is locked behind a paywall.
  18. [R8] 1/5 · GB No free usage after first workout: The fact that this app only lets you do a single workout for free, then forces the premium model on you is a real disappointment. After the first workout they also pop up the review panel which is misleading since most users wouldn’t be caught by the paywall at that point. The app functionality is great but be prepared to pay for it or uninstall 🤷
  19. [R10] 1/5 · GB Not free: I downloaded did one workout and then you have to pay - why don’t you just say that in the blurb
  20. [R19] 1/5 · GB Why is this a subscription?: I know the answer.. people will pay it. Ridiculous to have a £3p/m subscription for a timer. Would happily pay a few quid for it as a one off.
  21. [R32] 1/5 · GB £20 for a timer…?: I did not think this could be real, the developers actually want £3/month or £20 for a timer? It’s almost laughable but it’s also sad
  22. [R36] 1/5 · GB Subscription?: A subscription? For a timer? Are the devs stupid?
  23. [R52] 1/5 · AU Good app but greedy devs: Charging however much they do for a subscription to an interval timer app is insane. It’s an interval timer. If it were a dollar or so I’d pay it gladly but an ongoing subscription which is like $7 for a timer? I legitimately thought they were joking at first. The app is otherwise great. Good UI, nice soothing voice telling you that you got 5 seconds left. Too bad they
  24. [R65] 2/5 · AU Disappointed in the first 60 secs: I wanted to set exercise 1 for 30 secs Exercise 2 for 40 secs Exercise 3 for 50 secs Nope can’t do that. And I wanted to just have a stop watch feature say 3 stop watches 1 set for 30 secs the 2nd set for 2 mins and the 3rd set for 3 mins so that you can quickly set your times for what ever activity you are doing without having to reset the stop watch all the
  25. [R70] 3/5 · AU Good but inflexible.: It’s good but assumes a circuit program. I can’t seem to change it so I can do multiple rounds of one exercise rather than multiple exercises in a round. It’s good but assumes a circuit program. I can’t seem to change it so I can do multiple rounds of one exercise rather than multiple exercises in a round.
  26. [R75] 1/5 · AU Poor functionality: It doesn't allow you to set different timber for a sequence of exercises. Useless!
  27. [R94] 1/5 · AU All intervals are the same length: App is way too simplistic, all your intervals are the same length. I wanted to use this for running intervals but it didn’t even have the most basic functionality.
  28. [R80] 3/5 · AU Great for interval training: Great to keep your time. However, you can’t close your phone and the workout continues. You have to keep the app open for it not to pause the workout. Which is terrible because I either have to hold my phone while running or have it keep stoping and starting on my pocket.
  29. [R85] 1/5 · AU Useless: Stops when I turn the screen off
  30. [R33] 4/5 · GB good basics but could use more: this app really helps me keep track in my workouts. however i’d benefit from… 1) being able to name my workouts. loading a previous workout is helpful but if i could actually save and name them, it would save some guesswork. 2) the voice that reads out exercise names is deep and hard to distinguish. could this be a woman’s voice instead? (would also be nice to have
  31. [R49] 4/5 · GB Almost perfect: The app is excellent and the functionality for what it does is perfect. For a single HIIT routine timer, I cannot fault it. I only wish there was an option to create multiple workouts with their own interval settings.
  32. [R68] 4/5 · AU Love the simple interface, needs more functionality: This is a really elegantly designed app that’s easy to use. It lets you specify each exercise in advance so you can switch off and just follow your instructions through the workout which is great. Unfortunately it doesn’t then let you save different workouts to easily reuse later. I’d love to be able to create my own shortlist of workouts to cho
  33. [R90] 4/5 · AU Great App: Love the app! My only suggestion would be that of being able to save workouts. This is sort of done with the “history” section of the app, although it would be nice to be able to name past workouts so that it’s easier to find which workout you’re after.
  34. [R26] 5/5 · GB Shame no have on Apple Watch: Is definitely the best one for sure. And I having been using lots of this apps. It is clear. You can keep track of exercise and rounds as u are doing. Simple design and no faff of adding thing you don’t need. However, you can’t use on Apple Watch. So if you are at the gym, u need to use your phone. Which is annoying. Shame.
  35. [R5] 5/5 · GB M pin: Very good 👍
  36. [R15] 1/5 · GB Would not recommend: I downloaded this app because I just wanted a simple timer to use for my workouts, the description says there is an “optional” premium pass but I used this yesterday for the first time and had a good experience so today I went back to use it again but I cannot even use the app unless I pay not even the basic timer, I will be deleting this app as it is useless now. It’s such a
  37. [R25] 1/5 · GB You can only use it once then you have to pay.: It will charge you £20 as a one off payment.

Synthesized from 100 recent App Store reviews · updated July 2026 · View on the App Store