Comparison

Interval Timer vs TimerNinja

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 provides a simple and customizable timer for interval training like HIIT, Tabata, and EMOM. It offers audio cues, background operation, and integrates with Apple Watch for health tracking. Pre-built routines and workout reminders help users stay consistent with their fitness goals.

Highlights
  • Customizable interval timer
  • Audio alerts for rounds
  • Background operation
  • Apple Watch integration
  • Workout reminders
  • Pre-built routines
Features
Read full description

Set your work and rest intervals, press start, and focus on your workout. PureHIIT is a simple timer for HIIT, Tabata, EMOM, circuits, and boxing rounds. • Adjust work, rest, and round settings to suit your session. • Follow sound cues as you move from one phase to the next. • Keep listening to your music while you train. • Use the timer in the background or in landscape mode. • Start with a prebuilt routine or save your own. • Set workout reminders to help you keep a routine. Getting started is simple: choose a routine or set your intervals, check the number of rounds, and press start. Clear phase colors help you see when to work and when to rest. Free to download, with optional in-app purchases. Apple Watch features require Premium. On Apple Watch, the app integrates with Health to record heart rate and energy used. Make time for your next workout with PureHIIT. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

TimerNinja

Track time for workouts and productivity with versatile timer options. Supports Apple Watch integration, Apple Health recording, and SharePlay for synchronized challenges with friends. Offers customizable themes and multiple timer types.

Highlights
  • Multiple timer types (Stopwatch, Countdown, Intervals, EMOM, Pomodoro)
  • Apple Watch standalone app and remote control
  • Record workouts to Apple Health
  • SharePlay for synchronized workouts with friends
  • Customizable dark and light themes
  • Standalone Apple Watch app
Features
Read full description

TimerNinja is the simple, flexible interval timer for workouts, training sessions, and any other timed activity — on iPhone, iPad, Apple Watch, Apple TV, Mac, and Apple Vision Pro. Start from a library of ready-made workouts — Tabata, EMOM, AMRAP, boxing and MMA rounds, running intervals, and more — or build your own in seconds. TIMERS FOR EVERY ACTIVITY • Stopwatch — count up, with an optional time cap • Timer — a simple countdown • Intervals — work/rest rounds • Multi-interval — chain interval groups together • EMOM — Every Minute On the Minute • Tabata — 20 seconds on, 10 seconds off • Pomodoro — focus and break cycles (Plus) • Custom — build anything with nested, repeating intervals (Plus) READY-MADE WORKOUTS • 31 presets across CrossFit, HIIT, combat sports, running, and focus • Benchmark WODs like Cindy, Chelsea, and Fight Gone Bad; Tabata and the 7-minute workout; boxing, MMA, and BJJ rounds; Norwegian 4x4 intervals; and box breathing • Start one right away, or save it and make it your own YOUR TIMER, EVERYWHERE • Live Activities keep your timer on the Lock Screen and in the Dynamic Island • Start your favorite timers from Home Screen and Lock Screen widgets • Control Center controls let you start, pause, and resume without opening the app • Siri & Shortcuts: start any saved timer or preset by voice, automate your routine, or put it on the Action Button on Apple Watch Ultra • Your saved timers show up in Spotlight search BUILT FOR APPLE WATCH • Run timers standalone on your watch, or use it as a remote control for the timer on your iPhone • Record workouts to Apple Health with heart rate and calories — just pick an activity type when you start • Follow your live heart-rate zone during a workout and see your time in each zone afterward (watchOS 27) • Watch-face complications and Smart Stack support put your timers one tap away ALWAYS IN SYNC • Saved timers sync automatically across your devices with iCloud • SharePlay keeps timers perfectly in sync with friends anywhere in the world — challenge them to a workout • Share any timer as a link; anyone can open it instantly, even without the app SOUNDS THAT CUT THROUGH • Clear countdown beeps, interval cues, and finish sounds • Spoken announcements that call out each interval by name (Plus) • Extra sound packs — Airhorn, Ruan, Taiko, Boxing Bell, and more (Plus) MADE TO BE GLANCED AT • A distraction-free full-screen timer you can read from across the gym • Beautiful light and dark themes for both the app and the timer screen • Localized into 11 languages TimerNinja is free to use. TimerNinja Plus unlocks the Pomodoro and Custom timer types, spoken announcements, and extra sound packs. New subscribers can try it free for 7 days. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.timerninja.com/privacy

Screenshots

Interval Timer4 screens
TimerNinja4 screens

Verdict

The call

The clearest difference is ads: TimerNinja at none against Interval Timer's shown. TimerNinja also leads on review sentiment (83% vs 73%) and device support (6 vs 4). Interval Timer's advantage is rating (4.8 vs 4.4) and ratings volume (297 vs 9). On price, update cadence, in-app purchases and monetization model 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 8 in-app purchases, starting at $3.99 per month and TimerNinja sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Interval Timer holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Interval Timer has 297 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 73% of Interval Timer's written reviews are positive against 83% of TimerNinja's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Interval Timer ships an update fortnightly, TimerNinja every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Interval Timer versus TimerNinja: the parameters behind the verdict, then further details
ParameterInterval TimerTimerNinja
PriceFreeFree
Rating4.8 (297 ratings) — better4.4 (9 ratings)
Positive reviews73.3% of reviews83.3% of reviews — better
Number of ratings297 — better9
Update frequencyFortnightly — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod, Apple WatchiPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro — better
Requires iOS15.0 — better26.0
Further details — not scored
Size45 MB16 MB
Age rating+44+
DeveloperMiklos PavelHeftii, Inc.

Customer experience

Interval Timer

All ratings297 ratings
Positive96.0%
Neutral1.7%
Negative2.4%
Written reviews15 reviews
Positive73.3%
Neutral6.7%
Negative20.0%

TimerNinja

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews6 reviews
Positive83.3%
Neutral0.0%
Negative16.7%

Bugs and requests

Interval Timer

Reported bugs

2 issues
  • Advertisements still present after paying for removal
  • App requires premium to start timer (recent change)

Requested features

8 requests
  • Remove the cap on rounds
  • Add a background click feature (e.g., every second)
  • More sound options
  • Option for more than one workout
  • Add a halfway beep
Show 3 more
  • Add a countdown for the workout interval
  • Beep once at 15 seconds for a 30-second workout interval
  • Countdown the last 3 seconds of a workout interval

TimerNinja

Not enough reviews yet to summarise bugs or requests.

In-app purchases

8 purchases

Interval Timer

Subscriptions2
  • Monthly$3.991 Month
  • Yearly7 Days trial$19.991 Year
One-time6
  • Premium featuresFree
  • Remove Ads$1.99
  • Custom sounds$1.99
Show 3 more
  • Premium features$4.99
  • Premium features$9.99
  • Premium features$14.99
4 purchases

TimerNinja

Subscriptions4
  • TimerNinja+ Monthly7 Days trial$2.991 Month
  • TimerNinja+ Family Monthly7 Days trial$3.991 Month
  • TimerNinja+ Yearly7 Days trial$9.991 Year
Show 1 more
  • TimerNinja+ Family Yearly7 Days trial$14.991 Year

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is TimerNinja free?
TimerNinja is free to download, with in-app purchases available.
Which has better reviews, Interval Timer or TimerNinja?
Interval Timer is rated higher. Interval Timer averages 4.8 out of 5 from 297 ratings, while TimerNinja averages 4.4 from 9 ratings.
Do Interval Timer or TimerNinja have ads?
Interval Timer shows ads; TimerNinja does not.
Which is updated more often, Interval Timer or TimerNinja?
Interval Timer ships an update fortnightly, and TimerNinja every 3 weeks. Most recently, Interval Timer was updated on October 26, 2026 and TimerNinja on October 24, 2026.

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