Comparison

Simple Interval Timer vs Rounds

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Simple Interval Timer

Features
Read full description

Flexy Timer – The Ultimate Minimalist Workout Timer Flexy Timer is a sleek, intuitive workout timer designed for those who value focus and simplicity. With a clean, distraction-free interface, it helps you stay in the zone and get the most out of every workout. Perfect for HIIT, Tabata, CrossFit (AMRAP/EMOM/WOD), Boxing, Circuit Training, Sprint Intervals, Yoga, and Kettlebell Workouts. Flexy is the perfect tool to help you structure your time and stay on track—whether you're working out, meditating, studying, or managing your daily routines. Here’s how Flexy can support you: -Workouts & Exercise: Easily time your gym sessions, interval runs, CrossFit, HIIT, and Tabata workouts. -Yoga & Meditation: Set calming intervals to guide your yoga practice or meditation sessions with precision. -Focus & Productivity: Use Flexy as a Pomodoro timer to stay productive while studying, reading, or working. -Custom Routines: Create and save personalized interval timers for any activity—whether it's fitness, focus, or relaxation. No matter your goal, Flexy Timer makes timing simple, flexible, and effective. Train smarter. Stay focused. Let Flexy Timer be your easy-to-use workout companion! Flexy Timer Premium Features (In App Purchase): * Quick Start – Get moving in seconds. * Custom Timers – Personalize intervals to match your training. * Curated Music – Stay motivated with handpicked soundtracks. * Workout Log – Track and analyze your progress. In-App Purchase: ——All features of Simple Interval Timer are available for free during the first three uses. ——After that, a monthly or yearly subscription is required to continue using the timers. Privacy Policy: https://pdfhost.io/v/72mty7BYHd_Privacy_Policy_-_Simple_Interval_Timer__Flexy Terms of Use: https://pdfhost.io/v/3543sYv6Cr_Terms_of_Use_-_SEAD_Fitness

About

Rounds

This interval timer app simplifies workout creation for various training styles like HIIT, Tabata, and circuits. Build custom routines by stacking work, rest, and prep blocks, grouping them into rounds, and saving them as presets for quick access. It's designed for gym use, ensuring it won't interrupt your music.

Highlights
  • Customizable workout builder
  • Stackable work, rest, and prep blocks
  • Round grouping and repetition
  • Save and launch preset workouts
  • Music interruption-free design
  • Customizable sound profiles
Features
Read full description

Rounds is an interval timer that does what you tell it to. Wether its HIIT, Tabata, boxing 3s and 1s, a 20 minute EMOM with a finisheror kettlebell circuits, a mobility flow Rounds make it easy. No ads. No accounts. No upsells mid workout. Build the workout you want • Stack work, rest, and prep blocks in any order • Group blocks into rounds and repeat them as many times as you need • Save any workout as a preset and launch it with one tap from the home screen • Start from a handful of starter timers if you don't feel like building from scratch Rounds is made to actually be used in a gym. It doesn't interrupt your music, and we allow for a highly customizable sound profile so you can stay in the zone.

Screenshots

Simple Interval Timer4 screens
Rounds3 screens

Verdict

The call

The clearest difference is in-app purchases: Rounds at none against Simple Interval Timer's 2. On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Simple Interval Timer sells 2 in-app purchases, starting at $0.99 per month. Rounds asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Interval Timer ships an update weekly, Rounds every 2 weeks. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

Scorecard1 real difference · 8 level
Simple Interval Timer versus Rounds: the parameters behind the verdict, then further details
ParameterSimple Interval TimerRounds
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyWeekly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhoneiPhone, iPad — better
Requires iOS17.6 — better18.0
Further details — not scored
Size23 MB49 MB
Age rating4+4+
Developer阳 童Nightjar Labs LLC.

In-app purchases

2 purchases

Simple Interval Timer

Subscriptions2
  • Monthly Premium3 Days trial$0.991 Month
  • Yearly Premium3 Days trial$4.991 Year
None

Rounds

No in-app purchases

Questions

Is Simple Interval Timer free?
Simple Interval Timer is free to download, with in-app purchases available.
Is Rounds free?
Rounds is free to download, with no in-app purchases.
Do Simple Interval Timer or Rounds have ads?
Neither Simple Interval Timer nor Rounds shows ads.
Which is updated more often, Simple Interval Timer or Rounds?
Simple Interval Timer ships an update weekly, and Rounds every 2 weeks. Most recently, Simple Interval Timer was updated on October 9, 2026 and Rounds on October 1, 2026.

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