# PowerFrail: Healthy Aging — Muscle power & frailty tests

> App for assessing muscle power and frailty in older adults. (iPhone/iPad app by Universidad Castilla La Mancha.)

- Source: https://appshunter.io/ios/app/powerfrail-healthy-aging/id1573250099 (this page in markdown: same URL + `.md`)
- Developer: [Universidad Castilla La Mancha](https://appshunter.io/developer/1573250101)
- Category: Medical, Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 52 MB
- Languages: American English, Dutch, European Portuguese, European Spanish
- Released: 2021-07-07
- Data updated: 2026-11-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/powerfrail-healthy-aging/id1573250099/reviews.md

## What is PowerFrail?

PowerFrail assesses muscle power and frailty in older adults with two validated tests: the sit-to-stand (STS) chair test and the FTS-5 frailty test. All you need is a chair and your phone.

STS POWER TEST: HOW IT WORKS
• Sit on a stable chair placed against a wall and hold the phone against your chest.
• Stand up and sit down as fast as you safely can, for a set time (for example, 30 seconds, as in the 30-second chair stand test) or a set number of repetitions (for example, 5, as in the five times sit-to-stand test).
• The phone's motion sensors detect each repetition and the time; when you finish, the app calculates leg muscle power.
• A video and spoken instructions guide you through the test.
• You can also enter the time and repetitions of a test timed with a stopwatch.

YOUR RESULTS
• Relative power (W/kg) and allometric power (W/m²), with the risk of developing functional limitations (low, medium or high), based on sex-specific cut-off points.
• Percentile compared with people aged 60 and over.
• Leg muscle mass index, if leg muscle mass is known (optional).
• Movement strategy and fatigability during the test.
• Exercise recommendations aimed at the component that needs to improve.

FTS-5 FRAILTY TEST
Rates frailty with five simple items: body mass index, balance, grip strength, gait speed and physical activity.

TRACK PROGRESS
• Several users on one device, each with their own test history and progress chart.
• Share results.

WHO IT IS FOR
Geriatricians, GPs, physical therapists, nurses, exercise professionals, care homes and senior centres, and older adults who want to check and track their muscle power at home.

WHY IT MATTERS
Muscle power and frailty are key to healthy aging: low muscle power and frailty are linked to falls, loss of independence, hospital admission and mortality. Detecting them early makes it possible to act through exercise. With allometric power and leg muscle mass, PowerFrail covers both components of sarcopenia: muscle function and muscle mass.

SCIENTIFIC BACKGROUND
PowerFrail was developed by the GENUD Toledo Research Group (University of Castilla-La Mancha, Spain) and the Toledo Study for Healthy Aging (Virgen del Valle Hospital, Castilla-La Mancha Health Service), both part of CIBERFES (Carlos III Health Institute). The tests, algorithms, cut-off points and reference values come from their research:
• STS power test: https://pubmed.ncbi.nlm.nih.gov/30179662/
• FTS-5 frailty test: https://pubmed.ncbi.nlm.nih.gov/32005416/

IMPORTANT
PowerFrail does not replace assessment by a health professional. Use a stable chair against a wall and stop if you feel unwell.

Languages: English, Spanish, Portuguese and Dutch.

## Key features

- Sit-to-stand (STS) chair test
- FTS-5 frailty test
- Leg muscle power calculation
- Risk of functional limitations assessment
- Progress tracking for multiple users
- Personalized exercise recommendations

## Is PowerFrail safe?

Not enough ratings yet to assess PowerFrail.

## Is PowerFrail legit?

PowerFrail: Healthy Aging appears to be a legitimate app. The AppsHunter Legitimacy Score for PowerFrail is 83 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/powerfrail-healthy-aging/id1573250099/reviews.md

### 1/5 — mal

*2025-11-24, version 1.0.10*

mala experiencia, vende motos

### 5/5 — Súper útil!

*2021-07-07, version 1.0.10*

Es una aplicación útil y fácil de utilizar para saber como están nuestros mayores, la recomiendo muchísimo!

## Frequently asked questions about PowerFrail

### What is PowerFrail?

PowerFrail is a medical app designed to assess muscle power and frailty in older adults using two validated tests: the sit-to-stand (STS) chair test and the FTS-5 frailty test. It helps users and professionals monitor key indicators for healthy aging.

### How does the STS chair test work in PowerFrail?

The STS chair test in PowerFrail uses your phone's motion sensors to detect repetitions as you stand up and sit down from a stable chair. It calculates leg muscle power and provides guidance through video and spoken instructions.

### What results can I get from PowerFrail?

PowerFrail provides results such as relative and allometric power, risk of functional limitations, percentile comparisons, and movement strategy analysis. It also offers exercise recommendations based on your test outcomes.

### Can multiple people use PowerFrail on one device?

Yes, PowerFrail supports multiple users on a single device, allowing each individual to have their own test history and progress chart. This is ideal for families or care settings.

### Is PowerFrail suitable for home use?

Yes, PowerFrail is designed for older adults who want to check and track their muscle power at home, requiring only a stable chair and a smartphone. It also serves as a tool for healthcare professionals.

### What is the scientific basis for PowerFrail?

PowerFrail was developed by the GENUD Toledo Research Group and the Toledo Study for Healthy Aging, with its tests and algorithms derived from their published research on muscle power and frailty.

### Does PowerFrail have ads?

No, PowerFrail does not contain advertisements. It is a free application focused on providing health assessment tools without commercial interruptions.

### What devices is PowerFrail available on?

PowerFrail is available for iPhone, iPad, and iPod devices. It is designed for iOS users interested in monitoring their aging health metrics.

## Version history (last 5 releases)

### 2.5.0 — 2026-11-11

In this version we have worked on the following improvements:
- New automatic analysis engine that counts repetitions more accurately.
- Up to 3 attempts per test, with a guided rest; the best one is kept.
- New strategy and fatigability indicators.
- Redesigned results: risk zone indicator and personalised recommendations.
- Other new features: clearer pre-test screen, reminder before starting, the screen no longer turns off during the test, and "Report a problem".

### 2.0.6 — 2026-09-17

In this version we have worked on the following improvements:
- New automatic analysis of the Sit-to-Stand muscle power test using inertial sensors.
- New classification of the risk of developing functional limitations.
- Other new features: video tutorial, audio instructions, share results, track your progress, information notes.

### 2.0.5 — 2026-08-27

In this version we have worked on the following improvements:
- New automatic analysis of the Sit-to-Stand muscle power test using inertial sensors.
- New classification of the risk of developing functional limitations.
- Other new features: video tutorial, audio instructions, share results, track your progress, information notes.

### 2.0.3 — 2026-07-01

In this version we have worked on the following improvements:
- New automatic analysis of the Sit-to-Stand muscle power test using inertial sensors.
- New classification of the risk of developing functional limitations.
- Other new features: video tutorial, audio instructions, share results, track your progress, information notes.

### 2.0.2 — 2026-05-12

In this version we have worked on the following improvements:
- New automatic analysis of the Sit-to-Stand muscle power test using inertial sensors.
- New classification of the risk of developing functional limitations.
- Other new features: video tutorial, audio instructions, share results, track your progress, information notes.

## Apps similar to PowerFrail

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sit To Stand](https://appshunter.io/ios/app/sit-to-stand/id6450546794) | — | Free | Medical |
| [Vivifrail](https://appshunter.io/ios/app/vivifrail/id1463377040) | — | Free | Medical |
| [ReHand, Hand Rehabilitation](https://appshunter.io/ios/app/rehand-hand-rehabilitation/id1188291271) | — | Free | Medical |

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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 2026-11-11.*