Comparison

Precision Interval Timer vs Justfit

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

Head to head
About

Precision Interval Timer

Create custom workout routines with pre-programmed warm-ups, intervals, conditioning, and cool-downs. Set work and rest periods, repeat cycles, and let the timer guide your training session.

Highlights
  • Pre-program entire workouts
  • Customizable work and rest intervals
  • Repeat cycles for exercises
  • Warm-up, conditioning, and cool-down sections
  • Guided training sessions
  • Stackable interval sections
Features
Read full description

With this interval timer you can pre-program your entire workout without having to stop and reset the intervals for your next exercise. Pre-program your warm-up, your intervals, your conditioning, and cool-down. Start the clock and let the timer guide you based on your inputs. The example below will illustrate what you can program in a full workout. Warm-up - 5 mins work, 0 mins rest, repeat 1 (in green bar repeat only 1, default setting) Add a section: (This will add a green bar, then program the intervals below in yellow) Skip rope intervals - 30 secs work, 30 secs rest, repeat 10 Rest between exercises - 0 mins work, 2 mins rest, repeat 1 Mountain Climber Intervals - 20 secs work, 10 secs rest, repeat 8 Rest between exercises - 0 mins work, 2 mins Let's say you wanted to repeat this entire cycle 3 times, you would then input 3 in the green bar above. You will cycle through this stack of intervals 3 times before moving on to your next activity. Add a section: Shadowboxing - 3 mins work, 1 min rest, repeat 4 Rest between to put on hand wraps - 0 mins work, 6 mins rest, repeat 1 Heavy bag - 3 mins work, 1 min rest, repeat 6 Rest before next activity - 0 mins work, 3 mins rest, repeat 1 Tabata Punchouts - 20 secs work, 10 secs rest, repeat 8 Let's say for example that you wanted to repeat the above section twice, you could in put 2 in the green bar and you will go through the whole process twice. This would be advantageous if you wanted to do perform a circuit and move from one type of exercise to the next. You could cycle through as many times as you want. Add a Section: Cool down - work 5 mins, rest 0, repeat 1 At the very bottom is the option to repeat the entire cycle. If you wanted to set-up an entire workout that you cycle through twice you could input 2 at the very bottom.

About

Justfit

This app provides customizable interval timers for various activities like HIIT, Tabata, meditation, and studying. Track your progress with detailed history and analytics, and personalize your experience with custom sounds and colors.

Highlights
  • Fully customizable interval timers
  • Full-screen circular countdown/countup stopwatch
  • Pre-made templates for HIIT, Tabata, Meditation
  • Customizable audio for intervals, sets, and rest
  • Detailed progress tracking and analytics
  • Timer sharing via export/import
  • Multilanguage support
Features
Read full description

Justfit is the interval timer that stays out of your way. Build a circuit, Tabata, HIIT or boxing timer in seconds and let it run in the background with big, readable digits. WHAT YOU GET • Unlimited intervals, sets and rest — name and color each one • Voice announcements and 3-2-1 countdown, so you never look at the screen • Sounds that cut through your music, then get out of the way • Apple Watch app and complication, Live Activity on the Lock Screen • History, streaks and weekly insights • Widgets and Siri: "Start Tabata in Justfit" FREE VS PRO Free: 3 timers, all basic sounds, 7-day history. Pro unlocks unlimited timers, templates, premium sounds and full insights — monthly, yearly or one-time. PRIVACY No account, no tracking. Your timers stay on your device and, if you choose, in your iCloud. Terms of Use (EULA): https://www.nahitfidanci.com/justfit/terms Privacy Policy: https://www.nahitfidanci.com/justfit/privacy

Screenshots

Precision Interval Timer3 screens
Justfit4 screens

Verdict

The call

The clearest difference is review sentiment: Justfit at 100% against Precision Interval Timer's 0%. Justfit also leads on rating (5.0 vs 3.0) and update cadence (every 3 days vs every 4 months). Precision Interval Timer's advantage is in-app purchases (none vs 4) and iOS requirement (9.0 vs 15.0). On price, ratings volume, ads and device support 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. Justfit sells 4 in-app purchases, starting at $1.99 per month. Precision Interval Timer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Justfit holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 0% of Precision Interval Timer's written reviews are positive against 100% of Justfit's.

UpkeepUpdate frequency

Precision Interval Timer ships an update every 4 months, Justfit every 3 days. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

Scorecard6 real differences · 4 level
Precision Interval Timer versus Justfit: the parameters behind the verdict, then further details
ParameterPrecision Interval TimerJustfit
PriceFreeFree
Rating3.0 (2 ratings)5.0 (1 ratings) — better
Positive reviews0.0% of reviews100.0% of reviews — better
Number of ratings2 — better1
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS9.0 — better15.0
Further details — not scored
Size2 MB105 MB
Age rating4+4+
DeveloperJason Van VeldhuysenFerda Nahit Fidanci

Customer experience

Precision Interval Timer

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Justfit

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Precision Interval Timer

No in-app purchases

4 purchases

Justfit

Subscriptions2
  • Monthly$1.991 Month
  • Annual$7.991 Year
One-time2
  • Lifetime Access$3.99
  • Lifetime Access$7.99

Questions

Is Precision Interval Timer free?
Precision Interval Timer is free to download, with no in-app purchases.
Is Justfit free?
Justfit is free to download, with in-app purchases available.
Which has better reviews, Precision Interval Timer or Justfit?
Justfit is rated higher. Precision Interval Timer averages 3.0 out of 5 from 2 ratings, while Justfit averages 5.0 from 1 ratings.
Do Precision Interval Timer or Justfit have ads?
Neither Precision Interval Timer nor Justfit shows ads.
Which is updated more often, Precision Interval Timer or Justfit?
Precision Interval Timer ships an update every 4 months, and Justfit every 3 days. Most recently, Precision Interval Timer was updated on October 14, 2026 and Justfit on October 16, 2026.

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