Comparison

UpDown vs Body Mass

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

Head to head
About

UpDown

Track your weight journey with a comprehensive journal that supports multiple family profiles. Visualize progress with charts, calculate BMI, and set reminders. Syncs with Apple Watch and Health for seamless health monitoring.

Highlights
  • Weight journaling
  • Multiple user profiles
  • BMI calculation
  • Progress charts
  • Reminders
  • Apple Watch & Health support
  • CSV export
Features
Read full description

A convenient weight journal with profiles for the whole family and notes in the history. It helps you track changes over days, weeks, months, and years, and the visual progress charts provide extra motivation to improve your results. In addition, the app offers BMI calculations, goal tracking, Apple Watch and Health support, flexible reminder settings, history export to CSV, and automatic iCloud synchronization. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Policy: https://matrapas.github.io/privacy/

About

Body Mass

Effortlessly track your weight and monitor progress with this Apple Watch application. It offers seamless iCloud backups and Apple Health integration, encouraging consistent logging to support your health and wellness journey. The app is completely free, with no advertisements or in-app purchases.

Highlights
  • Save body weight
  • Data records history
  • Auto calculation weight gain or loss
  • Apple Health sync
  • iCloud backups
  • Works without iPhone
  • Minimalist style
Features
Read full description

Track your weight effortlessly with our Apple Watch app. Enjoy seamless iCloud backups and Apple Health integration. Experience the convenience for free, with no ads or in-app purchases. Tracking your weight can significantly enhance the effectiveness of your time and workouts. It motivates you to excel and transforms you into your greatest challenger. Taking charge of our health is a personal duty. The power to shed weight and make nutritious choices lies within us. Consistent logging is crucial; it reinforces healthy habits and keeps our commitment to wellness at the forefront. Each log entry is a reminder of this pledge. Missing a single day can lead to a slippery slope of skipped logs, potentially leading back to old, less healthy habits. Stay consistent, stay healthy. ■ FEATURES: • Save body weight • Data records history • Minimalist style • Auto calculation weight gain or loss • Works without iPhone • Apple Health sync • iCloud backups • Support pounds, kilograms, and stones • 100% free, no ADs, no in-app purchases ■ WATCH COMPLICATIONS: • All watch sizes • All types of watch faces • Shows most recent weight • Progress bar shows min, max, and current weight • Weight gain or loss difference • Most current record date ■ SAFE AND SECURE: Privacy is not something you are merely entitled to, it is an absolute prerequisite. At Martspec, we believe privacy is a fundamental human right. So we built it into our products from the beginning of the design process. We do not share your data with any 3rd party. We do not use it for advertisement purposes and do not use it for profit. Your data is stored only on your Apple service (Apple Health store and iCloud). We do NOT store your data on our servers. ■ MISSION: At Martspec, we are committed to providing you with a simple and efficient way of logging your measurements. We aim to make the process as easy as possible for you, as we believe that the simpler it is, the more likely you are to stay on track and achieve your health and wellness goals. With our assistance, improving your health and making the world a healthier place has never been easier. ■ BUILD TOGETHER: Several people dedicated their time, for free, to engineer this app. Our resources are limited and we would appreciate it if you report any problems you encounter with the app. If you have some great ideas to improve the app - we want to know them. Please write that into the app review on App Store so that we and others can see it. Alternatively, you can reach us via social networks. Hopefully, with your help, we can deliver the best app ever. Thank you! ■ CONTACT US: https://twitter.com/MartspecCom

Screenshots

UpDown4 screens

Verdict

The call

The clearest difference is rating: Body Mass at 5.0 against UpDown's 4.4. Body Mass also leads on in-app purchases (none vs 3) and iOS requirement (15.0 vs 17.0). UpDown's advantage is update cadence (every 4 weeks vs every 5 months) and review sentiment (86% vs 75%). On price, ads 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. UpDown sells 3 in-app purchases, starting at $1.99 per month. Body Mass asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Body Mass holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: UpDown has 16 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 86% of UpDown's written reviews are positive against 75% of Body Mass's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

UpDown ships an update every 4 weeks, Body Mass every 5 months. Both last shipped on October 24, 2026.

Scorecard7 real differences · 3 level
UpDown versus Body Mass: the parameters behind the verdict, then further details
ParameterUpDownBody Mass
PriceFreeFree
Rating4.4 (16 ratings)5.0 (3 ratings) — better
Positive reviews85.7% of reviews — better75.0% of reviews
Number of ratings16 — better3
Update frequencyEvery 4 weeks — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPad, Apple WatchiPhone, iPod, Apple Watch
Requires iOS17.015.0 — better
Further details — not scored
Size4 MB4 MB
Age rating4+4+
DeveloperSergei IvanovMartspec LLC

Customer experience

UpDown

All ratings16 ratings
Positive87.5%
Neutral6.3%
Negative6.3%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Body Mass

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews12 reviews
Positive75.0%
Neutral8.3%
Negative16.7%

In-app purchases

3 purchases

UpDown

Subscriptions2
  • PRO Version (Monthly)$1.991 Month
  • PRO Version (Yearly)7 Days trial$14.991 Year
One-time1
  • PRO Version (Lifetime)$29.99
None

Body Mass

No in-app purchases

Questions

Is UpDown free?
UpDown is free to download, with in-app purchases available.
Is Body Mass free?
Body Mass is free to download, with no in-app purchases.
Which has better reviews, UpDown or Body Mass?
Body Mass is rated higher. UpDown averages 4.4 out of 5 from 16 ratings, while Body Mass averages 5.0 from 3 ratings.
Do UpDown or Body Mass have ads?
Neither UpDown nor Body Mass shows ads.
Which is updated more often, UpDown or Body Mass?
UpDown ships an update every 4 weeks, and Body Mass every 5 months. Most recently, UpDown was updated on October 24, 2026 and Body Mass on October 24, 2026.

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