Comparison

Interval Timer & Randomizer vs Smart Trainer app

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

Head to head
About

Interval Timer & Randomizer

Features
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Elevate your fitness routine with a versatile timer designed to deliver random intervals that intensify every workout session. This tool supports fully customizable routines for HIIT, Tabata, boxing, circuit training, and CrossFit with flexible timing options and an intuitive interface. Generates random intervals for varied workout intensity Customizable timers to fit your unique training style Tabata timer for focused high-intensity interval sessions Boxing round and rest timers tailored for combat training Quick and easy setup for immediate use and adjustments Ideal for HIIT, circuit training, CrossFit, and conditioning Clean design optimized for fast operation during workouts Stay motivated and overcome plateaus with a timing experience crafted to maximize your training results and keep your workouts engaging and effective.

About

Smart Trainer app

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Smart Trainer App – Your Intelligent Training Assistant! Smart Trainer app is a modern workout assistant designed for both coaches and individual athletes. It helps you organize training sessions more efficiently, automate daily routines, and supports self-discipline during workouts. All essential tools in one place: Whistle commands with various modes (regular, random, alternating, and more) Timer and stopwatch to structure your sessions Counter – useful for counting reps, rounds, or exercises Notes – plan your training, write down exercises or ideas, and keep everything in one place Train like a pro – in the gym, outdoors, or at home. Modes: Whistle Only: This mode allows you to set a random whistle interval. For example, you can choose a range where the whistle will sound no earlier than 2 seconds and no later than 7 seconds. Random mode: This mode allows you to set a random whistle interval. For example, you can choose a range where the whistle will sound no earlier than 2 seconds and no later than 7 seconds. Within this interval (2–7 seconds), your selected two whistles will play alternately β€” the first time β€œWhistle 1”, then β€œWhistle 2”, then β€œWhistle 1” again, and so on. If you want only one sound to play, simply select the same whistle sound for both slots. You never know whether the whistle will play at the 2-second mark or the 5-second mark β€” making this mode perfect for reaction speed training. Regular mode: This mode allows the whistle to sound at fixed intervals (e.g., every 5 seconds). You can also set two alternating whistles to play in sequence. Change cycle mode: This mode lets you set a specific interval from one whistle to the next. For example, you can configure 10 seconds from the first whistle to the second, and 5 seconds from the second back to the first. This method is ideal for exercises that require performing specific tasks within fixed time intervals. Random work whistles mode: In this mode, you can select multiple whistle sounds that will play in a random sequence β€” either at regular or random time intervals. Perfect for training rhythm, perception, and reaction time. HIIT mode: The classic High Intensity Interval Training mode – set your work and rest durations, as well as whistle signals for each phase. Repetition mode: This mode allows you to set a specific number of whistle repetitions. You can customize how many signals will play, the exact interval between each whistle, and even add rest pauses. Perfect for repetitive drills, technique training, or endurance-based exercises that rely on precise rhythm. Beep Test: The standard multi-stage fitness test used worldwide to measure endurance. The pace increases automatically with each level – the goal is to reach the beep before the signal! Track your progress, view levels, shuttles, distance, and estimated VOβ‚‚ max directly within the app. Extra Features: Works with Bluetooth speakers – lead workouts hands-free and loud Compatible with background music – keep your energy up! Available in Latvian, English, and Russian All features work offline, no internet required One-time purchase after a 3-day free trial – no subscriptions, no ads Smart Trainer app was created by Taekwondo coach Sandris Radzins, based on years of real training experience – practical, tested, and adapted to real-world sports environments.

Screenshots

Interval Timer & Randomizer4 screens
Smart Trainer app4 screens

Verdict

The call

The clearest difference is in-app purchases: Interval Timer & Randomizer at none against Smart Trainer app's 1. On price, update cadence, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Smart Trainer app sells 1 one-off in-app purchase. Interval Timer & Randomizer asks for nothing beyond the download.

UpkeepUpdate frequency

Interval Timer & Randomizer ships an update every 4 weeks, Smart Trainer app every 3 weeks. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

Scorecard1 real difference Β· 5 level
Interval Timer & Randomizer versus Smart Trainer app: the parameters behind the verdict, then further details
ParameterInterval Timer & RandomizerSmart Trainer app
PriceFreeFree
Update frequencyEvery 4 weeksEvery 3 weeks β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhoneiPhone, iPad β€” better
Requires iOS18.217.6 β€” better
Further details β€” not scored
Size4 MB10 MB
Age rating4+4+
DeveloperHitfire Production ABSandris Radzins

In-app purchases

None

Interval Timer & Randomizer

No in-app purchases

1 purchases

Smart Trainer app

One-time1
  • Full Version Access$3.99

Questions

Is Interval Timer & Randomizer free?
Interval Timer & Randomizer is free to download, with no in-app purchases.
Is Smart Trainer app free?
Smart Trainer app is free to download, with in-app purchases available.
Do Interval Timer & Randomizer or Smart Trainer app have ads?
Neither Interval Timer & Randomizer nor Smart Trainer app shows ads.
Which is updated more often, Interval Timer & Randomizer or Smart Trainer app?
Interval Timer & Randomizer ships an update every 4 weeks, and Smart Trainer app every 3 weeks. Most recently, Interval Timer & Randomizer was updated on September 18, 2026 and Smart Trainer app on September 21, 2026.

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