Comparison

InBody vs I

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

Head to head
About

InBody

Track your body composition, blood pressure, and daily activity to understand your overall health. Sync with devices to monitor progress and set fitness goals.

Highlights
  • Body composition analysis
  • Blood pressure monitoring
  • Activity and nutrition logging
  • Progress tracking
  • Device syncing
  • National ranking and friend competitions
Features
Read full description

At InBody, our goal is to bring evidence-based health and wellness data to more individuals so they can find health clarity that stretches far beyond a singular number on a scale. Using our mobile app in conjunction with one of our body composition analyzers or blood pressure monitors, users can directly measure muscle, fat, water, and blood pressure to see how these values, when combined with activity levels and nutritional habits, create a snapshot of whole body health. By regularly reviewing this information, individuals will be able to track progress over time and use this progress as momentum for continued, healthy improvement. Use the InBody App to: ● Evaluate key summaries of recent InBody Tests, active minutes, and nutritional information from the new overview dashboard ● View historic data for body composition in up to one month increments ● Review accurate body composition testing results, graphs, and interpretations ● Monitor blood pressure levels by comparing test results over time ● Manage caloric outputs and monitor daily movement, such as step counts and active minutes, through our training log. Use values to see how they correlate with changes in body composition over time ● Record daily exercise and food intake using our digital tracking log ● See your national ranking and start healthy competitions with friends and family, based on your InBody Score and weekly step count ● Track sleep time by syncing the InBody BAND 2 with the app What’s New Hey there. You’re not alone during this transformative time. We’re currently undergoing some healthy composition changes to help further simplify your understanding of personal health and wellness. Our new makeup looks a little something like: - An improved app dashboard, which displays data on your latest InBody Tests, blood pressure outputs, daily activity levels, body composition goals, and nutritional progress. - A blood pressure hub where you can review the history of your BP 170 and BP 250 test results. - An updated Result Sheet that provides visual representations of changes in body composition analysis, including fluctuations in skeletal muscle, body fat, body water, and more. *Please note: Output availability will vary depending on the InBody device used for testing. - A graphic depiction of differences in segmental body composition that is available to testing facilities using LookinBody Web with an InBody 570 or 770 unit. - A digital diet and exercise log that can be used to fit healthy changes into your current lifestyle. Within this section, you can also set attainable muscle and fat goals based on scientific data formulated by the InBody Clinical Research team. *Please note: The guide(s) are for reference purposes only and should not be taken as professional medical advice. - An enhanced connection between your InBody wearable device and the app. By working together, these technologies can help you effectively track daily activity levels and sleep habits over time. - An online training journal that you can use to record time spent exercising and analyze body composition changes in relation to activity type, time, and intensity. - A way to see how you measure up. Use our national rankings board to start a friendly competition between peers at your testing facility, friends, or family members. *InBody App provides that Users can sync steps / body composition data to the Apple Health app. * This app is not intended for medical diagnosis or treatment. It provides health and wellness information for general reference only. Medical decisions should be made in consultation with healthcare professionals.

About

I

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I-SOL Smart앱은 디지털 혁명을 주도하는 I-SOL(스마트 인솔)과 함께 걸음을 실시간으로 감지하여 보행 습관을 알려주고, 균형감, 발각도, 활동량을 측정하여 건강하고 올바른 보행을 할 수 있도록 도와줍니다. I-SOL Smart앱은 올바른 보행에 도움을 주는 기본적이고 필수적인 기능을 제공합니다. 양발 보행패턴, 하루간의 활동 감지 기술은 보행 특성을 보여주며 당신의 건강하고 당당한 걸음 습관을 유지할 수 있습니다. [보행정보 데이터 분석] I-SOL Smart앱과 I-SOL(스마트 인솔)을 신고 걸을 때 걸음 거리, 속도, 걸음 수, 소모 칼로리는 어떤지 확인할 수 있습니다. [나의 활동량 분석] 하루 동안의 않아있는 시간, 서 있는 시간, 걸은 시간, 달린 시간을 한 눈에 확인 할 수 있습니다. [보행 패턴 분석] I-SOL Smart앱과 I-SOL(스마트 인솔)을 신고 걸으며 나타나는 보행 습관을 확인 할 수 있습니다. 좌우 균형이 나빠지지 않는지 걸음 습관이 잘못되지 않은지 나의 보폭, 균형, 발각도, 3박자, 지지분포 비율 데이터를 통하여 확인 할 수 있어 보행 습관 개선에 도움이되는 건강한 라이프스타일을 만들어보세요! [실험실] 신체 균형을 유지하는 실험실 (beta)을 통해 쉽게 신체 밸런스를 개선해볼 수 있습니다. [러닝모드] 실내운동, 실외운동 모드 정보를 기록, 저장하여 운동효과를 확인 할 수 있습니다. 유의사항 러닝 모드 사용시, GPS가 백그라운드에서 실행되어 스마트 폰 배터리 수명이 빨리 단축될 수 있습니다. 서비스 제공을 위해 다음과 같은 접근권한을 필요로 합니다. 선택적 접근 권한의 경우 허용하지 않더라도 기본 서비스 기능은 사용이 가능합니다. 필수적 접근권한 파일 저장 & 읽기: 원활한 서비스 이용을 위하여 필요한 데이터를 업데이트합니다. 블루투스 : 인솔장치와 연결하기 위해 사용 선택적 접근권한 위치: 운동 중 사용자의 위치정보 수집 iOS 버전이 9.0 미만인 경우, 앱의 접근권한을 개별적으로 제어할 수 없습니다. 불필요한 접근권한을 제어하기 위해서는 OS업데이트 가능여부를 확인 후 iOS 9.0 이상으로 업데이트하시기 바랍니다. OS업데이트 후 기존에 허용한 접근권한을 확인하시기 바랍니다.

Screenshots

InBody4 screens
I4 screens

Verdict

The call

The clearest difference is update cadence: InBody at every 5 days against I's every 3 months. InBody also leads on chart position (#61 vs unranked). On price, ads, 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

InBody ships an update every 5 days, I every 3 months. The most recent releases landed on October 29, 2026 and October 9, 2026 respectively.

Scorecard2 real differences · 9 level
InBody versus I: the parameters behind the verdict, then further details
ParameterInBodyI
PriceFreeFree
Rating4.0 (1.9K ratings) — better—
Positive reviews51.1% of reviews—
Number of ratings1.9K — better—
Update frequencyEvery 5 days — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank#61 — better—
DevicesiPhone, iPod, Apple WatchiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size277 MB60 MB
Age rating4+4+
DeveloperInBody Co., Ltd.Gilon Inc.

Bugs and requests

InBody

Reported bugs

5 issues
  • Unable to verify email/phone
  • Inconsistent sync with gym devices
  • Crashes when manually entering data
  • Password reset issues
  • Disappearing historical data

Requested features

5 requests
  • Support for latest device models
  • Integration with Apple Health
  • Ability to export data
  • More guidance on interpreting results
  • Option to set fitness goals

I

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

InBody

No in-app purchases

None

I

No in-app purchases

Questions

Is InBody free?
InBody is free to download, with no in-app purchases.
Is I free?
I is free to download, with no in-app purchases.
Do InBody or I have ads?
Neither InBody nor I shows ads.
Which is updated more often, InBody or I?
InBody ships an update every 5 days, and I every 3 months. Most recently, InBody was updated on October 29, 2026 and I on October 9, 2026.

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