Comparison

Interval Timer Plus vs Interval Randomizer

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

Head to head
About

Interval Timer Plus

This versatile timer app offers a simple yet powerful way to manage timed activities. Customize multiple intervals with individual colors and sounds, and save them as presets for quick access. It's designed for ease of use and visibility, even from a distance, and works seamlessly in the background.

Highlights
  • Customizable intervals
  • Named intervals with voice readout
  • Individual colors and sounds
  • Count time or repetitions
  • Unlimited presets
  • Works in background
  • Full screen color coding
Features
Read full description

Free, simple and easy to use all purpose Interval Timer SIMPLE AND FREE INTERVAL TIMER + 1-Tap Quickstart + No signup required, download and get going immediately GLANCEABLE + Very Big Fonts, visible from everywhere + Full screen color coding, works like a traffic light right in front of you + Portrait or landscape, always uses the full screen space POWERFUL ADVANCED PRESETS + Multiple intervals, each individually customizable + Name your intervals and have Interval Timer read it out to you + Individual colors and sounds + Count time or repetitions + Unlimited amount of presets ACCESSIBLE + Works with locked screen or while in another app + Reads out the interval name, so you know exactly what’s on + Vibration or silent mode, for the times when you need to tune it down + Works great with headphones and your own music + Supports dark and light mode REPEAT YOUR ROUTINE + Prepare and save your settings in presets + Pick your presets and start with just 1-tap OPTIMIZE ALL OF YOUR ACTIVITIES + Tabata timer + HIIT training + Crossfit + Circuit training + Fitness routines + Home workouts + Boxing round timer + Calisthenics circuit timer

About

Interval Randomizer

Features
Read full description

Train without falling into a predictable rhythm. Interval Randomizer creates changing work intervals inside the minimum and maximum range you choose. Set your timing, recovery and workout duration, then let every round develop differently. RANDOMIZED TRAINING - Random work intervals inside your selected range - Adjustable minimum and maximum work time - Custom recovery periods - Configurable total workout duration - Large live timer with clear work and recovery phases BUILT FOR SERIOUS TRAINING - HIIT workouts - Boxing and combat sports - Tabata sessions - MMA and martial arts conditioning - Sparring drills - Cardio and reaction training STAY CONSISTENT - Daily Challenges - Training streaks - XP and levels - Coins and rewards - Session statistics - Training-minute tracking - Save your favorite workout setups FAST DURING A WORKOUT The main controls stay visible so you can change your workout without digging through menus. Clear colors identify work, recovery, timing and progress at a glance. MADE FOR IPHONE AND IPAD Interval Randomizer includes dedicated layouts for iPhone and iPad, giving each device the space and controls appropriate for training. The core timer and Daily Challenges are free. Optional advertising supports continued development, with an available upgrade to remove ads.

Screenshots

Interval Timer Plus4 screens
Interval Randomizer4 screens

Verdict

The call

The clearest difference is in-app purchases: Interval Randomizer at none against Interval Timer Plus's 1. Interval Randomizer also leads on update cadence (monthly vs every 2 months). Interval Timer Plus's advantage is device support (4 vs 2) and iOS requirement (15.0 vs 18.2). On price and ads 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 Plus sells 1 one-off in-app purchase. Interval Randomizer asks for nothing beyond the download.

UpkeepUpdate frequency

Interval Timer Plus ships an update every 2 months, Interval Randomizer monthly. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Interval Timer Plus versus Interval Randomizer: the parameters behind the verdict, then further details
ParameterInterval Timer PlusInterval Randomizer
PriceFreeFree
Rating4.9 (6.3K ratings) — better—
Positive reviews95.3% of reviews—
Number of ratings6.3K — better—
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS15.0 — better18.2
Further details — not scored
Size24 MB6 MB
Age rating4+4+
DeveloperSu-Au HwangHitfire Production AB

Bugs and requests

Interval Timer Plus

Reported bugs

1 issue
  • Audio alerts not working when app is in the background

Requested features

2 requests
  • Support for Apple Watch integration
  • Ability to delete saved workouts

Interval Randomizer

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Interval Timer Plus

One-time1
  • Remove Ads$2.99
None

Interval Randomizer

No in-app purchases

Questions

Is Interval Timer Plus free?
Interval Timer Plus is free to download, with in-app purchases available.
Is Interval Randomizer free?
Interval Randomizer is free to download, with no in-app purchases.
Do Interval Timer Plus or Interval Randomizer have ads?
Neither Interval Timer Plus nor Interval Randomizer shows ads.
Which is updated more often, Interval Timer Plus or Interval Randomizer?
Interval Timer Plus ships an update every 2 months, and Interval Randomizer monthly. Most recently, Interval Timer Plus was updated on November 3, 2026 and Interval Randomizer on October 30, 2026.

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