Comparison

Interval Timer vs FlexSet

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

FlexSet

Features
Read full description

Build muscle with smarter gym and home workouts. FlexSet is a workout planner and gym tracker for simple, structured strength training. Create workout plans, track every set, follow your progress and train with a clear plan instead of guessing what to do next. Whether you train at home, in the gym or with limited equipment, FlexSet helps you build a workout routine that fits your setup. WORKOUT PLANS FOR YOUR EQUIPMENT Choose the equipment you have available and create training plans that match your environment. FlexSet supports bodyweight exercises, dumbbells, barbells, benches, pull-up bars, dip stations and more. Train effectively at home, in the gym or anywhere your setup allows. CREATE CUSTOM TRAINING PLANS Build your own workout routine or create multiple plans for different goals, schedules and equipment setups. Plan push, pull, legs, upper body, lower body or full body workouts and organize your training week the way you want. TRACK SETS, REPS, WEIGHT AND RIR Use FlexSet as your workout log and strength training journal. Track weight, reps, sets and RIR so you always know what you did and what to improve next. PROGRESSION MADE SIMPLE Progressive overload is one of the most important parts of muscle building. FlexSet helps you stay consistent with clear progression targets for weight, reps and effort. REST TIMER FOR FOCUSED WORKOUTS Stay in the flow during every session. The built-in rest timer helps you know when it is time for your next set, keeping your workouts structured and efficient. EXERCISE LIBRARY WITH VIDEOS Learn exercises with clear instructions, target muscles and videos. Find movements by muscle group, equipment and training goal. TRACK YOUR PROGRESS See how your strength develops over time with workout history, progress charts, training insights and personal records. Track volume, bodyweight, completed workouts and performance improvements. TRAIN WITH STRUCTURE FlexSet helps you plan smarter training blocks with progressive difficulty, RIR targets and deloads when needed. No random workouts. No complicated setup. Just clear training plans, simple tracking and better progress. FlexSet is ideal for: • Gym workouts • Home workouts • Muscle building • Strength training • Weight lifting • Dumbbell workouts • Barbell training • Bodyweight training • Progressive overload • Workout planning • Workout tracking Start building your gym or home workout plan with FlexSet today. Support: contact@redicionstudio.com Privacy Policy: https://redicionstudio.com/flexset-privacy-policy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Interval Timer4 screens
FlexSet4 screens

Verdict

The call

The clearest difference is ads: FlexSet at none against Interval Timer's shown. FlexSet also leads on iOS requirement (13.0 vs 15.0). On price, update cadence, in-app purchases 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. Interval Timer sells 8 in-app purchases, starting at $3.99 per month and FlexSet sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Interval Timer ships an update fortnightly, FlexSet every 10 days. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 8 level
Interval Timer versus FlexSet: the parameters behind the verdict, then further details
ParameterInterval TimerFlexSet
PriceFreeFree
Rating4.8 (297 ratings) — better—
Positive reviews73.3% of reviews—
Number of ratings297 — better—
Update frequencyFortnightlyEvery 10 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size45 MB129 MB
Age rating+44+
DeveloperMiklos PavelFlorian Lauka

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

FlexSet

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
2 purchases

FlexSet

Subscriptions2
  • FlexSet Premium Monthly14 Days trial$9.991 Month
  • FlexSet Premium Yearly14 Days trial$49.991 Year

Questions

Is Interval Timer free?
Interval Timer is free to download, with in-app purchases available.
Is FlexSet free?
FlexSet is free to download, with in-app purchases available.
Do Interval Timer or FlexSet have ads?
Interval Timer shows ads; FlexSet does not.
Which is updated more often, Interval Timer or FlexSet?
Interval Timer ships an update fortnightly, and FlexSet every 10 days. Most recently, Interval Timer was updated on October 24, 2026 and FlexSet on October 18, 2026.

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