# Simple Circuit Interval Timer — Plank Challenge & HIIT Timer > Customizable interval timer for HIIT, circuit training, and plank challenges. (iPhone/iPad app by Timothy Shepherd.) - Source: https://appshunter.io/ios/app/simple-circuit-interval-timer/id1505323062 (this page in markdown: same URL + `.md`) - Developer: [Timothy Shepherd](https://appshunter.io/developer/1479749822) - Category: Health & Fitness, Utilities - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 10.0 · 113 MB - Languages: Danish, English, French, German, Italian, Portuguese, Spanish, Swedish - Released: 2020-04-01 - Data updated: 2026-06-04 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/simple-circuit-interval-timer/id1505323062/reviews.md ## What is Simple Circuit Interval Timer? Working from home? Need some exercise? Simple Circuit Interval Timer is an easy-to-use fitness interval timer app for your High Intensity Interval Training (HIIT timer) workouts and yoga practises. Now also includes PLANK CHALLENGE APP- a daily challenge to encourage working out at home with one of the best core strengthening and fitness activities available, with no gym equipment needed! Customize intervals to suit your needs. PLANK A DAY Daily Planking Challenge - are you down? Join the challenge - plank for up to 1 minute, every hour, every day Fun and easy home workout Lots of variations to try Set your own workout schedule and times Play with family and friends, or by yourself Helpful and fun reminders (but you can totally turn them off) Customized workouts Plank Challenge is for beginners and pros alike Healthy lifestyle benefits and results! High Intensity Interval Training Timer for all sports and activities Lots of people use circuit training for weight loss and strength training Regular circuit, HIIT, and Tabata intervals AMRAP and Supersets Hold yin yoga and pilates poses Cardio (spinning, running) intervals and Calisthenics For use at home and in the gym Plank and core training exercises Push-ups and pull-ups Boxing rounds WOD and x-fit 7 Minute workouts (and longer!) Meditation and breathing Great for working out at home and exercises without equipment Fitness Features Set number of sets, and repeating interval timers for circuits and rest periods REP meter to help to maintain your pace Colorful, customizable themes Helpful countdowns in and out of each circuit Workout offline, anywhere Stunning visuals Awesome color themes DARK MODE GLOW UP MODE for a little razzle-dazzle Mesmerizing animations Circular or Squircular layouts Big and clear interfaces Simple, intuitive menus PRO MODE Unlock PRO MODE to access all themes, colors, layouts and features forever Be the first to get access to new features Maximize your workout with this free fitness interval timer. Keep that heart pumping! BENEFITS OF PLANKING Planking is one of *the top exercises* that anyone can do, anywhere, anytime! Planking challenges every one of your major muscle groups and has dozens of benefits. Ab definition and core strength - including obliques (side abs) Overall strength and full body fitness and strength Improved posture Greater flexibility and balance Body weight training of any kind improves weight lifting performance, improves cardiovascular health Relief from back pain and muscle tension Decrease risk of back injuries Improved metabolism Feel happier with exercise Great results for toned abs, butts, arms and legs Take a break from work and exercise while working from home with the PLANK CHALLENGES APP ## Key features - Customizable interval timers - HIIT, circuit, and Tabata support - Daily plank challenge - Offline workout capability - Customizable themes and layouts - REP meter for pace tracking ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Simple Circuit Trainer: Pro | $1.99 | one-time | | Simple Circuit Trainer: Pro | $1.99 | one-time | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/simple-circuit-interval-timer/id1505323062/reviews.md ### 5/5 — Best timer out there *2020-04-03, version 1.0* 5/5, easy to use for all abilities. Love it. ### 5/5 — Very good training aid *2020-04-02, version 1.0* This works very well. Everything you need as a basic training aid for circuits. Easy to adjust. ## Frequently asked questions about Simple Circuit Interval Timer ### What types of workouts can I do with Simple Circuit Interval Timer? Simple Circuit Interval Timer supports a wide range of workouts including High Intensity Interval Training (HIIT), circuit training, Tabata, AMRAP, supersets, yoga poses, cardio intervals, calisthenics, boxing rounds, and even meditation and breathing exercises. ### Does Simple Circuit Interval Timer have ads? No, Simple Circuit Interval Timer does not contain advertisements. The app is free to use and offers additional features through in-app purchases. ### What is the Plank Challenge feature? The Plank Challenge is a daily challenge designed to encourage working out at home. It involves planking for up to one minute every hour, every day, and offers variations for beginners and pros alike. ### Can I customize the timers in Simple Circuit Interval Timer? Yes, you can customize intervals to suit your needs. You can set the number of sets and repeating interval timers for circuits and rest periods. ### Is Simple Circuit Interval Timer available offline? Yes, you can work out offline with Simple Circuit Interval Timer, making it convenient to use anywhere without an internet connection. ### What are the benefits of the planking feature? Planking offers numerous benefits including improved core strength and ab definition, better posture, increased flexibility and balance, relief from back pain, and improved metabolism. It's a great bodyweight exercise for overall fitness. ### What is PRO MODE in Simple Circuit Interval Timer? PRO MODE is an unlockable feature that grants permanent access to all themes, colors, layouts, and features. It also provides early access to new features as they are released. ### What devices is Simple Circuit Interval Timer compatible with? Simple Circuit Interval Timer is compatible with iPhone and iPad devices. It is rated for ages 4 and up. ## Version history (last 5 releases) ### 1.3 — 2020-05-06 Daily challenge calendar to track circuit training progress up to 30 day plank challenges! Super hero and villian inspired color themes! Improved interval circuit trainer timer lite Healthy tips & treats ### 1.2.2 — 2020-05-02 UPDATED! Never miss another session - customizable reminders to fit YOUR schedule NEW! Slick superhero themes and updated color schemes NEW! Plank Challenge - fun full body weight training for all. Workout for tight tummies, toned arms, and booty-ful butts NEW! Pro Session motivation and information on health benefits of daily plank challenges ### 1.2.1 — 2020-04-28 Working from home? Need some exercise? Motivation? Now includes PLANK CHALLENGE APP - the daily plank challenge to encourage working out at home with one of the best core strengthening and fitness activities available, with no gym equipment needed! Customise intervals to suit your needs. The perfect motivation for home workouts. Join the challenge - plank for up to 1 minute, every hour, every day Fun and easy home workout Lots of variations to try Set your own workout schedule and times Play with family and friends, or by yourself Helpful and fun reminders (but you can totally turn them off) Customized workouts Plank Challenge is for beginners and pros alike Healthy lifestyle benefits and results! STAY SAFE, STAY HEALTHY ### 1.2 — 2020-04-13 Never miss another session - customizable reminders to fit YOUR schedule FIXED! App won't sleep when timer is running FIXED: Pro Mode is back! NEW: More colors COMING SOON: Plank Challenge Mode - fun full body weight training for all. Workout for tight tummies and booty-ful butts ### 1.1 — 2020-04-08 Never miss another session - customizable reminders to fit YOUR schedule FIXED! App won't sleep when timer is running More colors COMING SOON: Plank Challenge Mode - fun full body weight training for all. Workout for tight tummies and booty-ful butts ## Apps similar to Simple Circuit Interval Timer | App | Rating | Price | Category | | --- | --- | --- | --- | | [Interval Timer: Tabata Timer](https://appshunter.io/ios/app/interval-timer-tabata-timer/id1579228573) | 4.6 (142) | Free | Health & Fitness | | [Cronicl](https://appshunter.io/ios/app/cronicl/id1502820420) | — | Free | Health & Fitness | | [Géo Zone](https://appshunter.io/ios/app/geo-zone/id1511412120) | — | Free | Health & Fitness | | [LaBarberiaMilanino](https://appshunter.io/ios/app/labarberiamilanino/id1513771380) | — | Free | Health & Fitness | | [康博全科](https://appshunter.io/ios/app/id1487575240) | 5.0 (1) | Free | Health & Fitness | | [Fitness: Workout for Gym\|Home](https://appshunter.io/ios/app/fitness-workout-for-gymhome/id1107635517) | 4.8 (960) | Free | Health & Fitness | ## More apps by Timothy Shepherd - [Count to 100 - counting game](https://appshunter.io/ios/app/count-to-100-counting-game/id1479749823) - [PLANKS-A-LOT! Fitness fun](https://appshunter.io/ios/app/planks-a-lot-fitness-fun/id1511585151) - [Big Big Block Blast!](https://appshunter.io/ios/app/big-big-block-blast/id6446899681) - [Jigsorts: Jigsaw Puzzle Magic](https://appshunter.io/ios/app/jigsorts-jigsaw-puzzle-magic/id6471079485) All apps by Timothy Shepherd: https://appshunter.io/developer/1479749822 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*