Reach your weight & body goals with aktiBMI – track progress, stay consistent, and see real results. Simple, effective, and built for your transformation.
Achieve your ideal body with aktiBMI – your smart companion for weight loss, body transformation, and better health.
More than 500,000 users trust aktiBMI to reach their weight and body goals. With an accurate BMI calculator, a detailed Weight Diary, and complete body data tracking – including waist, chest, hip, and other measurements – aktiBMI helps you see your progress clearly and celebrate every milestone.
Whether you want to lose weight, build muscle, or simply stay on top of your health, aktiBMI gives you powerful tools to stay on track.
WHY USERS LOVE AKTIBMI
+ Professional BMI Calculator: Understand your health clearly.
+ Smart Weight Tracker: See your progress at a glance.
+ Body Data Analytics: Track body fat, muscle mass, and measurements.
+ Goal System: Set realistic goals and reach them step by step.
+ Weigh-in Reminders: Build consistency without stress.
+ Multi-User Support: Perfect for couples and families.
+ Apple Health Integration: All data syncs automatically.
FEATURE HIGHLIGHTS
MORE THAN JUST A BMI CALCULATOR
aktiBMI gives you more than numbers. It provides a clear understanding of your health and a defined path toward your ideal weight.
YOUR PROGRESS – VISUALIZED
The Weight Diary displays your journey with clean and easy-to-read charts. Spot trends early and stay motivated.
TRACK WHAT REALLY MATTERS
Weight alone doesn’t show the whole picture. Track body fat, muscle, water levels, and detailed measurements such as waist, hips, and chest.
STAY FOCUSED ON YOUR GOALS
Turn your goals into an actionable plan. Follow your progress in real time and enjoy the motivation of watching your goal bar grow.
DAILY MOTIVATION
Hand-picked motivational quotes help you stay positive and committed, even on challenging days.
CONSISTENCY MADE EASY
Flexible weigh-in reminders help you build healthy habits effortlessly.
LOSE WEIGHT TOGETHER
Use aktiBMI with your partner or family. Support each other and achieve your goals as a team.
WANT TO LOSE WEIGHT?
Track your diet success with clear charts and visual milestones. aktiBMI makes weight loss structured, motivating, and even enjoyable.
FOCUSED ON HEALTH?
Even if you’re satisfied with your weight, understanding your body composition is essential. Track muscle, fat, and key metrics with ease.
Download aktiBMI now and start your journey to a healthier, stronger, and more confident you.
Privacy policy: https://www.aktibmi.com/appprivacy
Terms of service: https://www.aktibmi.com/appterms
Note: aktiBMI integrates with Apple Health for a smooth and seamless experience.
Love it ! Love the charts, love the daily weight list, love the sound effects that congratulate you when you loose weight. Waaaay better than any of the other weight apps I have tried. I do have one suggestion, though. I would really like for there to be an additional "note" column on the Protocol page. There would be plenty of space for another column between the date and the weight column. Additional information could be recorded there, like 'Thanksgiving weekend', 'annual Christmas party', 'sick with flu', 'ran five miles yesterday', 'fasting for medical tests' ......... it could be a place to record explanations for a sudden increase or decrease in weight. You could even write motivational notes here to encourage yourself to keep trying or to keep it up. With this addition, the app would be perfect ! I am hoping for an update that includes this suggestion. :)
Update Issue Resolved
JMM276
Developer corrected update issues to my satisfaction. I initially had difficulty contacting support via their website because the captcha wouldn’t load. I realised that the reason it wouldn’t load is because I never verified the email associated with my account. Once I did that the captcha loaded and I was able to contact customer support. They got back to me within two hours. I was informed that they had a fix and were waiting for approval from Apple to load it to the App Store. When I logged into the app this morning all my historical data was correct.
(Almost) perfectly simple
JustanAdvice
Great for monitoring weight changes and conversion to BMI. It keeps things very simple for you. Slight issues that do not attract much as I will continue to use it. It is clearly metric oriented. Inches do go to 11 now, but weight progression says kilograms even though the number represents pounds. Normal BMI is 18.5 to <25, but they seem to be using actuarial tables possibly as for my age they list normal as 19 to <26. Not an issues as long as you know what is correct for you. Finally when putting in a new weight, the weight spinner is never on the previously recorded weight which would be nice. It always seems one pound higher which I assume they do so you feel some positive reinforcement (so you like using the app?) but again minor and I thank the developers for making their app available.
Useful (but needs work)
TXAG86PR
I like this app and have been using it for a while even though it still has issues. The app is good at allowing you to enter your weight and view your BMI level. It also has some nice visual charts so you can track your weight progress (by month, year, all). I installed this latest update which came out in August 2018 but didn’t go beyond that and pay for the new pro features as the basic features still have bugs/defects. If you look at their version history, their last 3 releases have each taken a year which is a lot of time to wait when the app still has errors but I keep using the app because it has the potential to be great. Hopefully, they will have another update soon.The Weight/Protocol screen continues to have problems. The weight development label shows ”kg” even though my settings are set to pounds. This screen also incorrectly shows that I’m currently “underweight” but that my desired weight is to be “overweight” LOL! Neither is accurate. They introduced a new bug as my previous weight entries now show an incorrect time. For weight entries logged since this latest update, the time is no longer displayed even though the app allows you to enter your weight multiple times in one day. I’m not sure why they named this screen “Protocol” when a protocol is a set of rules, and especially since the button/icon in the navigation bar is called “Weight”. Also on this screen, it would be nice if they used a monospace font for the tabular listing of weights and net loss/gain so that the numbers line up in a more visually appealing manner.Even with its errors and nuances, I recommended this app to a friend. It wasn’t until she entered her data that I noticed the dial doesn’t appropriately represent her BMI level which is “Obese III”. Thus, the dial is useless for people that are obese as the needle just sits at the highest level even while they are losing weight -the dial provides no visual motivation for them.I do look forward to seeing another update...hopefully soon.
Developer Response
Hello, thank you for your constructive feedback. A new version with some fixes will come in a few days. Could you please send us your body data or your database, so that we can check your "underweight/overweight" problem? Screenshots would also help us to understand the problem. :) Thank you in advance and best regards, Thomas // aktiBMI Team
Reach your weight & body goals with more fun!
This update improves translations, refreshes the loading screen, fixes weigh-in reminders, and includes many more optimizations.
Version 2.37
The developer, aktiWir GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
Identifiers
Data Linked to You
The following data may be collected and linked to your identity:
Health & Fitness
Contact Info
Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
aktiWir GmbH
Size
124.3 MB
Category
Health & Fitness
Compatibility
Requires iOS 14.0 or later.
iPhone Requires iOS 14.0 or later.
iPad Requires iPadOS 14.0 or later.
iPod touch Requires iOS 14.0 or later.
Mac Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
