Comparison

Interval Timer vs IntenSync

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

Head to head
About

Interval Timer

This app is a versatile interval timer designed for various training styles like Tabata and HIIT. It offers customizable workout parameters, voice guidance, and music ducking for an enhanced training experience. Save your custom workouts and track your progress.

Highlights
  • Customizable interval settings
  • Voice assistant with text-to-speech
  • Music ducking for audio integration
  • Save custom workouts
  • Tabata, Rounds, Stopwatch modes
  • Apple Health integration
Features
Read full description

Special timer for interval training. This Interval Timer offers: • Very intuitive interface. After installing this timer you need to press one button to start a tabata workout with classic settings. • Ability to set up prepare, work, rest, rest between sets, cool down time, number of cycles and sets. • Intervals can be configured individually. With this interval training timer you can create any interval workout with any sequence of intervals. • Voice assistant with text-to-speech. • Add descriptions to intervals that will be displayed on the timer screen and will be voiced. • Bright and nice colors. • Ability to lower the volume in your music player while playing the timer sounds (ducking). • List of your saved workouts. • NEW! Quick workout - setup your workout with fast and ease. The opportunity to display mode: - Tabata Protocol. - Rounds. - Stopwatch. - Intervals. Tabata is a form of high-intensity interval training (HIIT): • Workout hard for 20 seconds • Rest for 10 seconds • Complete 8 rounds It's time to train, good luck! Application supports Apple Health to track activity during workout. You can download the app for free. Further use requires a subscription. At our discretion, we may decide to offer you a free trial per the terms displayed in the app. Please note that: When opting for a subscription, you pay the fixed price for your country, which is displayed in the app. Payment will be charged to your Apple ID Account upon confirmation of purchase. Subscription automatically renews and free trial automatically converts into subscription unless auto-renewal is turned off at least 24 hours before the end of the current period. Your Account will be charged for renewal within 24 hours prior to the end of the current subscription period. You can manage your subscriptions and turn off auto-renewal by going to Account Settings after purchase. When canceling a subscription or a free trial, your subscription/free trial will stay active until the end of the current period. Auto-renewal will be disabled, but the current subscription will not be refunded. Terms of Use and Privacy Policy: https://docs.google.com/document/d/1FMzBsd_mSO69xuzkpOKljPPtxRMWMTzt2iGs6wJIhik

About

IntenSync

This app helps you create and track custom interval workouts for various fitness activities. It offers voice cues, visual guidance, and progress analytics. Premium features include manual logging, hydration and nutrition planning, and community engagement.

Highlights
  • Custom interval workout builder
  • Voice cues and sound packs
  • Visual workout guidance
  • Workout progress tracking and analytics
  • Manual workout logging (Premium)
  • Hydration and nutrition planning (Premium)
  • Community and accountability features
Features
Read full description

Build workouts, follow every set and rep, and stay consistent with one focused training companion. IntenSync brings workout planning, guided exercise sessions, demonstrations, prerecorded voice coaching, progress insights, nutrition, hydration, and Apple Watch controls together in a clean, distraction-free experience. BUILD FOR YOUR GOALS Create structured routines from a preset exercise library for the gym, home, or wherever you train. • Organize exercises into sets and rounds • Choose repetitions or timed intervals • Add rest, recovery, and cooldown periods • Build strength, HIIT, Pilates, cardio, circuit, and bodyweight sessions • Save routines for quick access FOLLOW EVERY SESSION The guided workout player keeps your session moving while clearly showing what to do now and what comes next. • Rep-by-rep pacing for supported exercises • Set, round, repetition, and side tracking • Automatic rest and recovery periods • Prerecorded voice cues • Exercise demonstrations for supported movements • Controls to pause, skip, add time, mute, or finish COACHING AND TRAINING PLANS Use AI-assisted coaching to create practical workout drafts based on your goals and preferences. Review your routine before training and make adjustments when needed. Premium unlocks adaptive training plans, expanded coaching tools, exercise demonstration videos, and deeper workout insights. SEE YOUR PROGRESS Turn completed sessions into a clear view of your training consistency. • Workout history and session summaries • Recent progress • Training momentum • Completion and consistency insights • Detailed analytics with Premium SUPPORT YOUR TRAINING Log hydration and nutrition alongside your workouts. Review daily progress and keep the habits supporting your training in one place. Premium adds smarter planning and reminder tools. TRAIN WITH APPLE WATCH Premium members can use the Apple Watch companion during an active workout. • See the current exercise, set, repetitions, side, and remaining time • Pause, resume, skip, complete a set, or add time • Hear prerecorded voice cues on Apple Watch when connected • Continue voice guidance automatically on iPhone when the Watch is unavailable • View heart-rate information after granting Health access FREE AND PREMIUM Free features include the workout timer, routine builder, standard prerecorded voice guidance, recent progress, hydration tracking, and nutrition logging. Free browsing screens may contain ads, but ads are not shown during active workouts. IntenSync Premium adds AI-assisted coaching, adaptive training plans, exercise demonstration videos, detailed analytics, additional prerecorded coaching options, Apple Watch controls, and an ad-free experience. IntenSync is intended for general fitness and informational purposes. It does not provide medical advice, diagnosis, or treatment. Exercise within your abilities and consult a qualified professional when appropriate. SUBSCRIPTIONS IntenSync Premium is available through optional monthly and annual auto-renewable subscriptions. Payment is charged to your Apple ID account when your purchase is confirmed. Your subscription renews automatically unless canceled at least 24 hours before the end of the current subscription period. You can manage or cancel it through your Apple ID subscription settings. Privacy Policy: https://intensync.equilibelle.com/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Interval Timer4 screens
IntenSync4 screens

Verdict

The call

The clearest difference is monetization model: IntenSync at free with in-app purchases against Interval Timer's subscription. IntenSync also leads on update cadence (every 6 days vs every 4 weeks) and rating (5.0 vs 4.7). Interval Timer's advantage is ads (none vs shown) and ratings volume (3.5K vs 2). On price 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 sells 12 in-app purchases, starting at $1.99 per month and IntenSync sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

IntenSync holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Interval Timer has 3.5K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Interval Timer ships an update every 4 weeks, IntenSync every 6 days. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

Scorecard7 real differences · 3 level
Interval Timer versus IntenSync: the parameters behind the verdict, then further details
ParameterInterval TimerIntenSync
PriceFreeFree
Rating4.7 (3.5K ratings)5.0 (2 ratings) — better
Positive reviews66.5% of reviews—
Number of ratings3.5K — better2
Update frequencyEvery 4 weeksEvery 6 days — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhoneiPhone, iPad, iPod, Apple Watch — better
Requires iOS16.014.0 — better
Further details — not scored
Size243 MB253 MB
Age rating4+12+
DeveloperHIIT Apps Sp. z o.o.Equilibelle App Solutions

Customer experience

Interval Timer

All ratings3,466 ratings
Positive92.1%
Neutral2.3%
Negative5.6%
Written reviews442 reviews
Positive66.5%
Neutral7.9%
Negative25.6%

IntenSync

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Interval Timer

Reported bugs

3 issues
  • Workouts disappearing
  • App crashes and freezes
  • Timing issues with intervals

Requested features

4 requests
  • Apple Watch integration
  • More customization options
  • Additional audio cues and prompts
  • Improved workout tracking and history

IntenSync

Not enough reviews yet to summarise bugs or requests.

In-app purchases

12 purchases

Interval Timer

Subscriptions8
  • Intervals: monthly membership7 Days trial$1.991 Month
  • Intervals: membership7 Days trial$3.993 Months
  • Intervals: monthly membership$4.991 Month
Show 5 more
  • Intervals: yearly membership$6.991 Year
  • Intervals: yearly membership1 Year trial$9.991 Year
  • Intervals: yearly membership7 Days trial$19.991 Year
  • Intervals: yearly membership7 Days trial$24.991 Year
  • Intervals: membership7 Days trial$24.991 Year
One-time4
  • Intervals | PRO version$14.99
  • Intervals | Membership$14.99
  • Intervals | Membership$34.99
Show 1 more
  • Intervals | Membership$39.99
2 purchases

IntenSync

Subscriptions2
  • Monthly Premium$3.991 Month
  • Annual Premium$34.991 Year

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is IntenSync free?
IntenSync is free to download, with in-app purchases available.
Which has better reviews, Interval Timer or IntenSync?
IntenSync is rated higher. Interval Timer averages 4.7 out of 5 from 3.5K ratings, while IntenSync averages 5.0 from 2 ratings.
Do Interval Timer or IntenSync have ads?
IntenSync shows ads; Interval Timer does not.
Which is updated more often, Interval Timer or IntenSync?
Interval Timer ships an update every 4 weeks, and IntenSync every 6 days. Most recently, Interval Timer was updated on October 17, 2026 and IntenSync on October 6, 2026.

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