# Interval - Ultimate HIIT Timer — AI Workout of the Day > AI-powered HIIT timer with customizable workouts and progress sharing. (iPhone/iPad app by Nicholas Piscopio.) - Source: https://appshunter.io/ios/app/interval-ultimate-hiit-timer/id6478241901 (this page in markdown: same URL + `.md`) - Developer: [Nicholas Piscopio](https://appshunter.io/developer/493808934) - Category: Health & Fitness, Utilities - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.2 · 8 MB - Languages: English - Released: 2024-02-22 - Data updated: 2026-06-10 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/interval-ultimate-hiit-timer/id6478241901/reviews.md ## What is Interval? Welcome to Interval - your ultimate companion for high-intensity interval training (HIIT)! Whether you're looking to shed some pounds, tone your muscles, or target specific areas of your body, Interval is the perfect tool to help you achieve your fitness goals. Interval empowers you to create, customize, and perform interval workouts tailored to your preferences and fitness level. With an intuitive interface and powerful features, this app makes it easy to take your workouts to the next level. Key Features: Pre-Loaded Workouts: Get started right away with pre-loaded AI workout templates designed to help you lose weight, tone your muscles, or target specific muscle groups. Choose from a variety of predefined routines, including lower body, upper body, total body, and more. AI-Generated Workouts: Let our AI generate personalized workouts based on your fitness goals, preferences, and fitness level. Never run out of ideas with dynamic, ever-changing routines designed to challenge and motivate you. Customizable Timers: Create personalized interval timers to match your workout routines perfectly. Adjust work and rest intervals, set the number of repetitions, and customize warm-up and cool-down periods to suit your needs. Audio and Visual Cues: Stay motivated and focused during your workouts with audio and visual cues that guide you through each interval. Receive alerts when it's time to work, rest, or transition between exercises, ensuring you stay on track and maximize your results Shareable Results: Share your workout results with friends, family, or workout buddies. Inspire others to join you on your fitness journey by sharing your favorite interval routines via social media, email, or messaging platforms. Whether you're a seasoned athlete or just starting out on your fitness journey, Interval is the ultimate tool to help you crush your HIIT workouts and achieve the results you desire. Download now and experience the power of interval training at your fingertips! Start your journey to a stronger, fitter you with Interval - Ultimate HIIT Timer! ## Key features - AI-generated personalized workouts - Pre-loaded workout templates - Customizable interval timers - Audio and visual workout cues - Shareable workout results ## Frequently asked questions about Interval ### What types of workouts does Interval offer? Interval offers pre-loaded AI workout templates for weight loss, muscle toning, and targeting specific muscle groups like lower body, upper body, and total body. It also generates personalized workouts based on your goals and fitness level. ### Can I customize the workout timers in Interval? Yes, Interval allows you to create personalized interval timers. You can adjust work and rest intervals, set the number of repetitions, and customize warm-up and cool-down periods to perfectly match your routines. ### Does Interval provide guidance during workouts? Interval provides audio and visual cues to keep you motivated and focused. You'll receive alerts for when to work, rest, or transition between exercises, ensuring you maximize your results. ### Can I share my workout results with others using Interval? Absolutely. Interval allows you to share your workout results with friends, family, or workout buddies via social media, email, or messaging platforms to inspire them on their fitness journey. ### What devices is Interval available on? Interval is currently available for iPhone and iPad devices, catering to Apple users looking for a comprehensive HIIT training companion. ### How often is Interval updated? The latest version of Interval is 2025.05.26, and it was last updated on 2025-05-28, indicating a recent and active development cycle. ### Does Interval have ads? Yes, Interval contains advertisements. As a free application, it is supported by ads to provide its features to users. ### What is the age rating for Interval? Interval has an age rating of 4+, making it suitable for a wide range of users looking to engage in fitness activities. ## Version history (last 5 releases) ### 2025.05.26 — 2025-05-28 - Better generated exercise timers with AI - Bug fixes - Performance improvements ### 2024.08.19 — 2024-08-19 - UX improvements - Performance improvements - Bug fixes ### 2024.04.08 — 2024-04-08 - Performance improvements - Improved UX - Resolved an issue where the app would sometimes crash if the timer wasn't loaded properly when starting the timer ### 2024.04.06 — 2024-04-06 - Improved UI for creating/editing timers - Added the ability to rearrange intervals in timers - Added the ability to change the background color of intervals - Improved performance - Bug fixes ### 2024.03.23 — 2024-03-25 - Better AI generated exercises - Performance improvements - Bug fixes ## Apps similar to Interval | App | Rating | Price | Category | | --- | --- | --- | --- | | [Interval Timer: Workout Timer](https://appshunter.io/ios/app/interval-timer-workout-timer/id1448144846) | 4.8 (683) | Free | Health & Fitness | | [Tabata Timer: Interval Timer.](https://appshunter.io/ios/app/tabata-timer-interval-timer/id1255964203) | 4.9 (9,023) | Free | Health & Fitness | | [Timer for Workouts - HIIT](https://appshunter.io/ios/app/timer-for-workouts-hiit/id6451154499) | 4.8 (82) | Free | Health & Fitness | | [Exercise Timer: Interval Timer](https://appshunter.io/ios/app/exercise-timer-interval-timer/id1501534442) | 4.8 (929) | Free | Health & Fitness | | [Interval Timer - Tabata Timer](https://appshunter.io/ios/app/interval-timer-tabata-timer/id406473568) | 4.5 (18,111) | Free | Health & Fitness | | [Interval Timer □ HIIT Timer](https://appshunter.io/ios/app/interval-timer-hiit-timer/id1124297113) | 4.8 (82,735) | Free | Health & Fitness | --- *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 2026-06-10.*