Comparison

Interval Timer・HIIT Timer vs FulwaveTimer

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

Head to head
About

Interval Timer・HIIT Timer

This app provides a customizable interval timer for various fitness activities like HIIT, strength training, and yoga. It includes real-time audio cues, heart rate monitoring using your phone's camera, and automatic workout logging to track progress.

Highlights
  • Customizable workout intervals
  • Real-time audio and voice cues
  • Heart rate monitoring via camera
  • Automatic workout logging
  • Workout history and statistics
  • Drag-and-set interface
Features
Read full description

Fitness Timer is your all-in-one workout timer app designed to help you stay focused, train efficiently, and monitor your fitness progress. Whether you're doing HIIT, strength training, Tabata, cardio, or yoga, this interval timer makes it easy to set up custom workouts and follow them with precision. Perfect for both beginners and advanced athletes, Fitness Timer delivers a clean, distraction-free experience with customizable intervals, real-time audio cues, and heart rate tracking—all without interrupting your music or other apps. Interval Timer for Every Workout Fitness Timer is a powerful yet simple workout timer built for all types of interval training: * Create and customize workout intervals for active time, rest time, and number of rounds * Set up timers for HIIT, Tabata, EMOM, AMRAP, circuit training, or stretching * Get started in seconds with a clean drag-and-set interface * Clear audio or voice alerts guide you through each interval Use Fitness Timer to structure your home workouts, gym routines, or running intervals without hassle. Heart Rate Monitor Using Camera Now featuring built-in heart rate monitoring with no extra device required. Use your phone's camera and flashlight to measure your heart rate instantly: * Place your finger on the camera to measure your pulse * Monitor heart rate before, during, or after exercise * Useful for cardio training, recovery, and intensity tracking This feature turns your phone into a lightweight heart rate tracker to support safe, effective workouts. Fitness Tracking and History Fitness Timer automatically logs every session so you can track your progress and stay motivated: * View workout history and total training time * Repeat previous sessions with one tap * Analyze your training patterns in the statistics tab Information about the auto-renewable nature of the subscription. Confirm subscription: Payment will be charged to iTunes Account at confirmation of purchase. Manage subscriptions: Users can manage or unsubscribe in iTunes & App Store account management in the phone system settings. Auto-renewal: Apple iTunes account will be charged for renewal within 24-hours prior to the end of the current subscription period. To cancel the renewal, please turn off auto-renew manually at least 24-hours before the end of the period. No cancellation of the current subscription is allowed during the active subscription period. You can go to the Account Settings to cancel the renewal before the trial ends. The current free trial will be forfeited when you purchase a subscription to the premium version before the trial period ends. By using the app, you confirm that you acknowledge and accept our Privacy Policy and Terms of Service: Privacy Policy: https://sites.google.com/view/reva-desai/privacy Terms of Service: https://sites.google.com/view/reva-desai/terms You no longer need to manually record your workouts—everything is saved automatically.

About

FulwaveTimer

Features
Read full description

Most timers count to zero. FulwaveTimer runs your whole routine — built from stages, each with its own length, color, and most important sound. Intervals, Pomodoro focus blocks, breathing exercises, a speech you're rehearsing, a sleep wind-down: set the structure once, press play, and follow along by sound, on your Lock Screen, or from your wrist. BUILD IT YOUR WAY • Multistage timers — add as many stages as you like, each with its own duration and color. • Per-stage sound — play an audio track you own, or have the app read text aloud with a voice and speed you choose. • Independent transitions — set how each stage's audio starts and ends on its own: Cut, Fade, or Crossfade into the next stage. • Per-stage haptics and alert tones, plus a spoken 10-second warning or 3-2-1 countdown. • Repeat a single stage, or loop the whole playlist — perfect for HIIT rounds, Pomodoro cycles, and breathing sets. • Start fast from built-in templates: Pomodoro, HIIT, Box Breathing, Meditation, and more. ON-SCREEN TEXT FOR SPEECHES • Show a stage's text on the Player and scroll it in time with the reading — a simple teleprompter for practicing a talk. VOICE-OVERS, IN YOUR VOICE • A session can carry its spoken words as text rather than baked-in audio, so your device reads them over the stage's music in any voice you have installed — including another language. • Set the voice and the speed, or turn speaking off and read along on screen. Yours to adjust even in a locked session. STAY IN CONTROL, EVERYWHERE • Live Activity and Dynamic Island show your session on the Lock Screen with a glanceable countdown. • A Quick Start Home Screen widget launches a playlist with one tap. • On-time stage notifications announce each new stage by name. • Lock Screen and headphone controls to play, pause, and skip. APPLE WATCH + APPLE HEALTH • A live timer on your wrist with stage, countdown, and controls. • Record your session as a workout in Apple Health — with heart rate, active energy, and the workout type you set on the playlist. • Wrist haptics fire at every stage change, even with the screen off. YOUR LIBRARY, SAFE AND IN SYNC • iCloud keeps your playlists in sync across your devices, privately. • Color-tag playlists to organize your library. • Export and import playlists. • Automatic backups with one-tap restore — the newest also kept in your own iCloud account, so it survives a reinstall. • A shared session puts its own audio back on your other devices, or after a reinstall. MADE TO FIT YOU • Custom accent, background, and text colors; Dynamic Type and VoiceOver throughout. • Design your Player: movable widgets, eight clock styles. • A simplified Playback-Only view when you just want to press play. • Works on iPhone, iPad, and Apple Silicon Mac. FULWAVE PRO FulwaveTimer is free to use, and keeps a small library at no cost. Fulwave Pro unlocks an unlimited playlist library and session export. Pro is available as a monthly subscription with a 7-day free trial, or a one-time lifetime purchase. SHARE COMPLETE SESSIONS Bundle a playlist together with its audio into a single .fws session file and share it. Anyone can open and play a session they receive; Fulwave Pro keeps imported sessions in your library permanently. FULWAVE DESIGNER FOR MAC Fulwave Designer is a free companion app on the Mac App Store. Build a session on a big screen: layer several audio tracks and spoken-text cues on a single stage, set each layer's start delay, gain, and pan, choose haptics and stage colors, add session artwork, and audition it all on a transport. Export a .fws session — optionally locked, so it plays exactly as you built it — to play or share here. Sessions you receive open and play for free; Fulwave Pro keeps them in your library. No accounts. No ads. No tracking. Your data stays on your devices. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://fulwave.com/FulwaveTimer/PrivacyPolicy.html

Screenshots

Interval Timer・HIIT Timer4 screens
FulwaveTimer4 screens

Verdict

The call

The clearest difference is iOS requirement: Interval Timer・HIIT Timer at 15.0 against FulwaveTimer's 17.6. On price, update cadence, ads and in-app purchases 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. Interval Timer・HIIT Timer sells 2 in-app purchases, starting at $2.99 per month and FulwaveTimer sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 28, 2026 and November 10, 2026 respectively.

Scorecard1 real difference · 8 level
Interval Timer・HIIT Timer versus FulwaveTimer: the parameters behind the verdict, then further details
ParameterInterval Timer・HIIT TimerFulwaveTimer
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS15.0 — better17.6
Further details — not scored
Size74 MB11 MB
Age rating4+4+
DeveloperReva DesaiPhillip Fuller

In-app purchases

2 purchases

Interval Timer・HIIT Timer

Subscriptions2
  • Premium Monthly Access$2.991 Month
  • Premium Yearly Access$19.991 Year
2 purchases

FulwaveTimer

Subscriptions1
  • Fulwave Pro (Monthly)7 Days trial$0.991 Month
One-time1
  • Fulwave Pro (Lifetime)$29.99

Questions

Is Interval Timer・HIIT Timer free?
Interval Timer・HIIT Timer is free to download, with in-app purchases available.
Is FulwaveTimer free?
FulwaveTimer is free to download, with in-app purchases available.
Do Interval Timer・HIIT Timer or FulwaveTimer have ads?
Neither Interval Timer・HIIT Timer nor FulwaveTimer shows ads.
Which is updated more often, Interval Timer・HIIT Timer or FulwaveTimer?
Interval Timer・HIIT Timer ships an update every 4 days, and FulwaveTimer every 4 days. Most recently, Interval Timer・HIIT Timer was updated on October 28, 2026 and FulwaveTimer on November 10, 2026.

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