Seconds Interval Timer

• Advanced Version — $7.99

Last verified 30 Aug 2026

4.7 23574 ratings · App Store

1. 4/5Does a great job

   Overal I am very happy with this app. It is a nice, simple interval timer, I have used it to make workouts for running, strength training, and others. It is a one time fee, as opposed to a monthly fee like the others, seriously being able to actually own an app for once is nice! Customizing each move is nice, and you have helpful options such as splitting the move for each side (such as lunging on the right then on the left) and having a break in between each side. I also love the different options for signaling the next move, although to me they are all kind of annoying except for the single beep. But you can have it tell you what move it is with an ai voice if you want. It is a little hard to figure out at first. You can’t add a move in in between two others, you can only copy and paste. So I just have to copy something and paste it in and edit it to what I want it to say. Also if you just hit paste , it goes to the bottom. If you want it after a certain move, you have to long press it then paste. It copies whatever is selected, so if you forget to unselect something, it pastes it too. The thing I really would like to have changed though, is the ability to change multiple things at once. I would love it if I could select several moves and change the color for all of them, or the time for all, instead of one at a time. Other than that, I think this app is fine, just takes some practice.

   Brittnay729 · 30 Aug 2026

2. 5/5Love that it’s not a subscription!

   Mostly i just love that this app lets me basically do whatever i want with it. I can easily create my own routine. But the five star rating is because I really love that they allow you to purchase the app for a one-time fee (which is actually very affordable). I basically rule out any app that is a subscription because if i like the app then i can’t imagine paying a subscription for it indefinitely. I like to have a simple app that i can own forever. I really hope they don’t take away the ability to purchase the app for a one time fee. Like i said, i genuinely stay away from subscriptions. I have shared this app with multiple people who have also purchased it because they loved that it was a one-time fee. Im also more willing to take a chance and pay a one-time fee on an app that i possibly wont use, than to sign up for a subscription based app. If i was being super critical i might deduct a star because i don’t know why it doesn’t show my heart rate in the timer when i use it on my apple watch. The heart rate portion just shows “N/A”. Maybe my apple watch is old or something? I can’t figure it out. But i didn’t actually deduct a star because if i cared enough then i could try and contact the company for help, but i haven’t felt like it so that’s sorta on me. All things considered, it’s a great app and i always suggest it to people who are looking for something like it!!

   Aimes93 · 30 Aug 2026

3. 5/5Great for pacing workout routines!

   This app has become an indispensable tool for my workout routines, especially for keeping me on pace during intense sessions. The interface is incredibly user-friendly, making it easy to navigate even for those who aren't tech-savvy. One of the standout features is the ease with which I can create and customize my own workout routines, particularly for circuit training. The app supports a wide range of interval types and allows me to set up complex routines with varying work and rest periods. The ability to save and reuse these routines saves a lot of time and keeps my workouts efficient and consistent. Additionally, the app’s clear and loud alerts ensure I never miss a transition, even in the middle of a vigorous session. Overall, Seconds offers a seamless and intuitive experience, making it a top choice for anyone looking to enhance their training with precise timing and custom workout plans. Highly recommended for fitness enthusiasts of all levels!

   Chasandjack · 30 Aug 2026

4. 2/5Flexible, but very crude

   This is a flexible interval timer that allows expert users to set up custom programs. But to say it "lacks polish" is an understatement. I don't object to the painfully bare-bones interface: just a bunch of numbers on the screen with no chrome. The problem is that that interface doesn't even quite work correctly. The numbers all flicker as they change—a huge distraction when that's all you have to look at. Even more infurating, the times don't actually add up: the "total elapsed time" slowly diverges from the sum of the intervals you've done, so when you finish your fourth five-minute interval the timer will say you've completed something like 20:04. These are admittedly small details, but they give this app an extremely amateurish feel. More serious is the actual UI while you're working out: any extraneous tap anywhere on the screen—or, say, a drop of sweat—will silently restart your interval or send you to the next one with no indication that it's happened. The pause button is a tiny, barely-tappable target in the corner. And there is a similarly hard-to-tap "lock" button which presumably stops the "tap anywhere to ruin your workout" behavior, but then you've got to find this button again if you want to adjust anything. It's fairly clear the app author hasn't even tried any of the many professional workout/timer apps but instead just built the first thing that came into their head and never tested it. It's a shame that a timer with such useful features is so clumsily designed.

   R890 · 30 Aug 2026

5. 5/5Super Versatile!

   Amazing app! Extremely versatile. I had this one complex circuit, and I was like, “how am I gonna be able to do this with this app”. I was thinking it’d be long and tedious and not even perfectly correct. I thought I was right, but then I discovered the compound timer and the ability to copy and past exercises!!! Just when I thought I’d reached the limit with this app, I discovered an awesome functionality that makes things sooo much easier. It’s such a cheap price to get the whole thing unlocked considering how amazingly versatile and easy to use this app is. Sooooo worth it. The only little issue I have with it is that sometimes the timer sound glitches. So for example, like sometimes when the time for rest is down to just 3 secs, it does the 3 second countdown (which is great cause it acts as a warning and gets you ready), but sometimes it’ll start glitching out so there might be one beep then no more until the times up then you get one irky prolonged beep. It’s just a minor issue that only happens sometimes with me, but it just throws me off a little in my workout. Of course, that’s just me. Other than that, Amazing app!!!! Totally recommend!

   jonuorah · 30 Aug 2026

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