# Plixi: Body Fat Calculator — Skinfold Caliper & Body Comp

> Body fat percentage calculator using caliper measurements and multiple formulas. (iPhone/iPad app by Ivan israel Villamil covian.)

- Source: https://appshunter.io/ios/app/plixi-body-fat-calculator/id1128099685 (this page in markdown: same URL + `.md`)
- Developer: [Ivan israel Villamil covian](https://appshunter.io/developer/1114336238)
- Category: Health & Fitness, Utilities
- Price: Free with in-app purchases
- Rating: 4.60/5 from 72 App Store ratings · 36 written reviews indexed
- Age rating: +12
- Requires: iOS 16.0 · 62 MB
- Languages: American English
- Released: 2016-09-05
- Data updated: 2026-09-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/plixi-body-fat-calculator/id1128099685/reviews.md

## What is Plixi?

Accurate body fat analysis in seconds. Enter your caliper measurements, choose
your formula, and get instant results — trusted by fitness professionals and
personal users worldwide.

PROFESSIONAL-GRADE FORMULAS

Choose from scientifically validated body density formulas — Durnin/Womersley
(4 sites), Jackson/Pollock (3 sites), and Jackson/Pollock (7 sites) — combined
with Siri, Brozek, or Behnke body fat equations. Each formula is optimized for
different populations, giving you the flexibility to match the right method to
each client.

TWO MODES, ONE APP

- Professional Mode: Manage multiple patients, track their progress, and share
  results. Ideal for nutritionists, personal trainers, and healthcare providers.
- Individual Mode: A streamlined experience focused on tracking your own body
  composition journey.

COMPLETE PATIENT MANAGEMENT

- Create detailed patient profiles with custom fields
- Save unlimited measurements with full history
- View evolution charts for body fat, weight, BMI, and lean mass
- Photo gallery with before/after comparison
- Share visual progress summaries via WhatsApp, email, or any app

BUILT-IN MEASUREMENT GUIDE

Not sure where to measure? Each skinfold site includes step-by-step
instructions, anatomical descriptions, and practical tips to ensure accurate
readings every time.

BODY FAT RANGES TABLE

Compare results against age and gender-specific body fat ranges — from
competition level to obesity — so you always know where you stand.

ADDITIONAL FEATURES

- BMI and Lean Mass calculations included
- Customizable calculator display and formula settings
- Export & import data for easy backup and device migration
- Works 100% offline — no internet required
- Dark and light theme
- Available in English, Spanish, Portuguese, and Italian

Free to download. Optional Premium subscription unlocks unlimited patients, full
measurement history, evolution charts, photo gallery, data export, and an
ad-free experience.

## Key features

- Body fat percentage calculation
- Multiple body density formulas
- Multiple body fat percentage formulas
- Patient registry
- Customizable patient profiles
- Comparative fat percentage table

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly Subscription | $5.99 | per month |
| Yearly Subscription | $29.99 | per year |
| Biannual Subscription | $19.99 | per 6 months |
| Yearly Subscription | $29.99 | per year |
| Biannual Subscription | $17.99 | per 6 months |
| Monthly Subscription | $4.99 | per month |


## Recent user reviews (10 of 36)

All indexed reviews: https://appshunter.io/ios/app/plixi-body-fat-calculator/id1128099685/reviews.md

### 2/5 — Wrong output

*2026-06-27, version 3.0.5*

First gripe: your calculation is wrong. I compared with 3 other calculators on 3-location measurement and your app was odd man out (telling me I was lower by about 1.5%)

Second gripe: ads are overkill. No, I’m not paying a subscription, but I’m also not willing to watch an ad for 20-30 seconds before each daily measurement when I can just use a web app with no advertisements. I’m tempted to write my own iOS app and just charge a flat $1.00 fee for the life of the app — it’s not rocket science…

### 5/5 — Open

*2025-12-21*

Open

### 5/5 — Top

*2025-06-18*

Rjdjs

### 4/5 — Cores do app

*2025-03-28*

Poderia ter uma opção para mudar as cores de fundo do app

**Developer response:** Temas personalizados, como escuro e branco, estão no roteiro e devem ser lançados ainda este ano.

### 2/5 — Faltou cálculo IMC

*2025-01-29*

Bom aplicativo, porém incompleto.

**Developer response:** Este é um recurso que muitos usuários solicitaram, por isso está em nosso roteiro. Você pode esperar por ele ainda este ano.

### 1/5 — Es buena pero

*2024-11-02, version 2.3.3*

La aplicación es muy buena pero aunque es gratis no te deja más que un paciente, si quieres más te cobra y eso antes no lo hacía , eso ya no me gustó

### 1/5 — Não está funcionando mais

*2024-10-14*

App não está funcionado mais…  me cobrou mensal e parou de funcionar

### 2/5 — Mal

*2024-10-02, version 2.2.5*

no me deja pagar mi premium

### 1/5 — Faltan datos

*2024-09-17, version 2.2.4*

Se debe de tener en cuenta estatura y peso. Y tener en cuenta pliegues como el abdomen y la pierna

### 3/5 — Top

*2024-09-09*

Top bem funcional

## Frequently asked questions about Plixi

### What does this app do?

This app functions as a specialized calculator designed to accurately determine body fat percentage. It works in conjunction with caliper measurements and offers various established formulas for calculating body density and body fat.

### What are the main features of this body fat calculator?

Key features include a calculator that supports customizable body density and body fat percentage formulas, a patient registry for managing client data, and the ability to create detailed patient profiles with custom fields for measurements. It also provides a comparative table of fat percentage ranges by age and gender.

### How is body fat percentage calculated in this app?

The app utilizes caliper measurements and offers a selection of formulas for body density (such as Durnin/Womersley and Jackson/Pollock) and body fat percentage (including Siri, Brozek, and Behnke). Users can choose the formulas most appropriate for their clients.

### Is this app free to use?

The application is available for free download and use, but it does include in-app purchases. This means some advanced features or functionalities may require a purchase to unlock.

### Who is this app best suited for?

This app is ideal for fitness professionals, personal trainers, and individuals who regularly use calipers to measure body composition. It's designed for those who need precise body fat calculations and a way to track client progress over time.

## Version history (last 5 releases)

### 3.0.5 — 2026-06-16

Plixi 3.0.5

What's new:
- Faster startup with quicker language and data loading
- Sticky letter headers in the patient list for easier browsing
- Charts and translations load on demand for a smoother experience

Thank you for using Plixi!

### 3.0.4 — 2026-05-17

Plixi 3.0.4

What's new:
- Pick your preferred units (metric or imperial) right during onboarding
- New calculator preference to show or hide the keyboard toolbar
- Numeric fields now accept comma decimals on locale-aware keyboards
- Smoother ads behavior with fewer repeated interstitials and small UI polish

Thank you for using Plixi!

### 3.0.3 — 2026-05-13

Plixi 3.0.3

What's new:
- Automatic data recovery: if any information was lost during a previous update, the app now detects and restores it for you
- Improved database stability with smarter retry logic on startup
- Fixed feature announcements that could reappear after being dismissed

Thank you for using Plixi!

### 3.0.2 — 2026-05-05

Plixi 3.0.2

What's new:
- Customize your calculator! Hide or show weight and height fields to focus on what matters most
- Quick-access preferences: adjust your calculator setup without leaving the screen
- Smarter timing for ads and review prompts — they now appear at the right moment
- New feature announcements: discover what's new directly inside the app

Thank you for using Plixi!

### 3.0.1 — 2026-05-01

Plixi 3.0.1

What's new:
- Imperial & metric unit system: switch between kg/cm and lbs/ft-in in the calculator
- Decimal keyboard on weight and metric height for faster, more precise input
- Improved evolution charts: smoother scrolling without gesture conflicts
- Patient data now restores correctly after saving a measurement
- Custom fields routing fixed for Individual mode
- Better in-app review experience on both iOS and Android
- Performance: smaller app size with optimized images and reduced bundle

Thank you for using Plixi!

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## More apps by Ivan israel Villamil covian

- [BFitt](https://appshunter.io/ios/app/bfitt/id1389912958)

All apps by Ivan israel Villamil covian: https://appshunter.io/developer/1114336238

## Related topics

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-01.*