Comparison

Bodyfat Tracker vs Flash Interval Timer Workout

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

Head to head
About

Bodyfat Tracker

Easily track your body fat percentage and other key metrics to support weight loss or muscle building goals. Simply input your waist measurement and weight to monitor progress over time with detailed charts and customizable goals.

Highlights
  • Body fat percentage tracking
  • Waist to Height Ratio (WHR) calculation
  • BMI calculation for comparison
  • Progress charts (bar and line)
  • Goal setting for weight, waist, and body fat
  • Automatic result updates
  • Multiple measurement systems
Features
Read full description

*Update - now includes the new Army body fat calculation method as an option, which was introduced in June 2023. If you want to lose weight or are trying to build muscle then you need an accurate and simple way to track body fat percentage and other important metrics. With this app you simply need to measure your waist and weigh yourself - that’s it! No messing around with callipers and such. With these measurements each day you can track your progress over time using the charts and waist and weight goals you set yourself. Get a true picture of your body status with accurate metrics like Waist to Height Ratio (WHR) and Bodyfat percentage. Gives an overall body category based on body fat percentage and WHR. BMI is also shown for comparison. Features include: - both bar and line charts to monitor progress - trend line can be activated to see if you're on the right track - enter your goal weight, waist and even body fat percentage to give yourself motivation - move back and forth by date and add or modify entries quickly using the arrow buttons - Automatically updates results as you type! No need to press a 'calculate' button every time to see your results like with other body fat calculator apps - entry view where you can view a list of all entries made that month - choose your measurement system between kilograms, pounds or stones and pounds - summary popup box shows important metrics and overall progress at a glance - charts can be viewed in full screen mode to get a good view of progress over a longer time period - Waist to Height Ratio (WHR) and BMI metrics - Multiple themes available - Supports English, French, Chinese and Japanese languages

About

Flash Interval Timer Workout

This app provides a customizable interval timer for various high-intensity interval training (HIIT) and circuit workouts. Easily build, save, and access your training sessions with clear visual cues and audio prompts to keep you focused.

Highlights
  • Customizable work and rest phases
  • Save and favorite workouts
  • Large, clear countdown display
  • Audio and voice cues
  • Workout history tracking
  • Multiple appearance themes
Features
Read full description

Flash Interval Timer Workout is a fast, focused interval timer for HIIT, Tabata, circuits, running, strength work, and custom training sessions. Build sessions in seconds, save them to your library, and stay locked in with a large circular countdown that makes it obvious what phase you are in, how long is left, and what comes next. Features: Big full-screen interval timer Custom work, rest, prepare, and cooldown phases Save workouts to your library Favourite workouts for quick access Presets for fast setup Advanced custom sets and variations Skip the last rest option Audio and voice countdown cues Multiple sound themes Per-phase colour customisation Workout history Light, dark, and system appearance options Flash Interval Timer Workout is designed to reduce friction before and during training, so you can start quickly and keep moving.

Screenshots

Bodyfat Tracker4 screens
Flash Interval Timer Workout4 screens

Verdict

The call

The clearest difference is in-app purchases: Flash Interval Timer Workout at none against Bodyfat Tracker's 6. Bodyfat Tracker's advantage is ads (none vs shown) and update cadence (every 3 days vs every 9 days). On price, rating, review sentiment and ratings volume 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. Bodyfat Tracker sells 6 in-app purchases, starting at $0.99 per month. Flash Interval Timer Workout asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Bodyfat Tracker against 4.9 for Flash Interval Timer Workout. Both are backed by a comparable volume of ratings — 4 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Bodyfat Tracker ships an update every 3 days, Flash Interval Timer Workout every 9 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
Bodyfat Tracker versus Flash Interval Timer Workout: the parameters behind the verdict, then further details
ParameterBodyfat TrackerFlash Interval Timer Workout
PriceFreeFree
Rating5.0 (4 ratings) — better4.9 (7 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings47 — better
Update frequencyEvery 3 days — betterEvery 9 days
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFreemiumAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size46 MB43 MB
Age rating4+4+
DeveloperSimon BurgessColin Differ

Customer experience

Bodyfat Tracker

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Flash Interval Timer Workout

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

Bodyfat Tracker

Subscriptions2
  • Premium Monthly$0.991 Month
  • Premium Annual$5.991 Year
One-time4
  • Small tip$0.99
  • Medium tip$1.99
  • Large tip$4.99
Show 1 more
  • Premium Lifetime$9.99
None

Flash Interval Timer Workout

No in-app purchases

Questions

Is Bodyfat Tracker free?
Bodyfat Tracker is free to download, with in-app purchases available.
Is Flash Interval Timer Workout free?
Flash Interval Timer Workout is free to download, with no in-app purchases.
Which has better reviews, Bodyfat Tracker or Flash Interval Timer Workout?
Bodyfat Tracker is rated higher. Bodyfat Tracker averages 5.0 out of 5 from 4 ratings, while Flash Interval Timer Workout averages 4.9 from 7 ratings.
Do Bodyfat Tracker or Flash Interval Timer Workout have ads?
Flash Interval Timer Workout shows ads; Bodyfat Tracker does not.
Which is updated more often, Bodyfat Tracker or Flash Interval Timer Workout?
Bodyfat Tracker ships an update every 3 days, and Flash Interval Timer Workout every 9 days. Most recently, Bodyfat Tracker was updated on October 5, 2026 and Flash Interval Timer Workout on October 7, 2026.

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