iPhone Screenshots


FatKit for iPhone helps you calculate your Body Fat Percentage and Lean Body Mass. It connects to the Health app, imports relevant data and stores your results. You can choose from multiple methods of measurement, measure your body with a fat caliper and take more than one measurement on each location for accuracy. You can track your progress in the history graphs.


• You can connect with the Health app and FatKit automatically imports data from there
• Choose the imperial or metric system
• Set reminders so you won’t miss a measurement
• Contact the team for every question or suggestion
• Rate the app

• Can be imported from the Health app if you choose so

Methods of measurement:
• Jackson / Pollock 3
• Jackson / Pollock 4
• Jackson / Pollock 7
• Durnin / Womersley
• Parillo

• Individual graphs for Body Fat Percentage and Lean Body Mass
• Periods: 1 month, 3 months, 6 months, 1 year
• Graphs are just a tap / swipe away
• Requires connection to the Health app

What’s New

Version 1.1.1

• iOS 10 support

If you enjoy using FatKit, please leave a positive review on the App Store. This keeps us motivated and helps support further development of this app.

Ratings and Reviews

3.7 out of 5
16 Ratings

16 Ratings

QBStrong ,

Well done.

Not overly complicated and relatively easy to use. I like it and it helps to log and record your weekly progress. Maybe I have not figured it out yet, however, I don't see where you can go back and look at your individual measurements after you have entered them into the app. It's not necessary, but I'm interested to see what my exact measurements were rather than just the ultimate body fat percentage from week to week. Nice app so far. Thanks.

Thinkcl ,

Limited Editing and Poor Instructions

I like the clean interface but after purchasing and doing 3 measurements, one per week for 3 weeks, I’ve found this app is really lacking. The first time I went to use it I chose the three site measurement method and was astonished that there were no simple diagrams on where and how to do the folds. Instead were complex anatomy names for where to do the folds so I had switch to safari and google info. Second issue is you cannot edit entries. I made an error on one entry and wanted to correct it but that is not an option so I had to delete it and re-enter all of the data. Third issue is you cannot set or change dates of entries. I accidentally deleted my first entry and wanted to add it back but there is no date field so that’s gone on my graph. So I’m now looking for a better app that offers better instructions and editable data.

Solarusdude ,

Great Skinfold Calculator

The app works exactly as it's supposed to. It estimates your bodyfat percentage based on your skinfold calipers and desired testing method. It will even add in your lean body mass into HealthKit provided that you've entered your weight using another app. The different skinfold methods tend to give different results since everyone stores their bodyfat differently. If you're concerned about which method to use, I recommend getting a DXA scan and then compare each one since DXA is a lot more accurate.

App Privacy

The developer, VAR TIM SOFTWARE S.R.L., has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer's privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


15.7 MB

Requires iOS 9.0 or later. Compatible with iPhone and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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