Comparison

King vs InStep Movement Analytics

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

Head to head
About

King

This app provides a quick and objective sideline concussion screening test for athletes. It helps identify potential concussions by assessing eye movements, attention, and concentration through a simple number-reading exercise. Requires an existing King-Devick Online account.

Highlights
  • Objective sideline concussion screening
  • Assess eye movements and attention
  • Administer baseline and post-injury tests
  • Works offline
  • Suitable for ages 5+
Features
Read full description

This app is intended ONLY for users with an existing King-Devick Online account. The King-Devick Concussion Screening Test is an objective, remove-from-play sideline concussion screening test which can be administered by parents, coaches, athletic trainers or medical professionals in minutes. Peer reviewed published research has shown that the King-Devick Test is an accurate and reliable method to help identify athletes with concussion on the sidelines. It has particular relevance to sports such as football, hockey, soccer, and basketball in addition to all other contact or collision activities on the field or at home. The test involves reading aloud a series of single digit numbers from left to right on three test cards. The King-Devick can detect impairment of eye movements, attention, language, concentration and other areas which correlate with concussion. How does King-Devick Test work? -King-Devick Test account holders get unlimited concussion screening per athlete per year. -With the King-Devick Test App, you can administer baseline and post-injury assessments even when WiFi is not available. -All athletes establish a pre-season or pre-injury baseline test score annually. -Concussion screening for athletes as young as 5 years old.

About

InStep Movement Analytics

This app helps athletes understand their movement patterns and track injury recovery using AI. It establishes personalized movement baselines, logs injuries, and measures recovery progress with data-driven insights. Ideal for athletes and team staff to make informed decisions about player health.

Highlights
  • AI-powered movement fingerprinting
  • Personalized health baseline creation
  • Injury logging and recovery tracking
  • Static and dynamic balance testing
  • Team management portal
  • Data-driven health insights
Features
Read full description

Welcome to InStep’s athlete health monitoring app, the app that helps you understand your functional movement and track injury recovery. InStep uses proprietary AI to help athletes build their unique movement fingerprint. From this athletes and team staff can create movement baselines, track injuries, measure recovery and empower players and clinicians to make data informed decisions about team health. Developed in collaboration with leading researchers, InStep is focused on keeping players on the pitch, healthier, and longer! The InStep app requires Apple AirPods to run. Here’s how it works: Personalized Health Baseline - Movement is the 6th vital sign, and the way that you move is unique to you. InStep helps you establish your unique movement baseline. By establishing a healthy baseline and understanding how this changes over time you have unparalleled insights into performance and recovery. Injury Log and Recovery Tracking - When you are injured you, or your team physio can log the injury in our app and use our platform to track recovery back to your healthy baseline. InStep empowers athletes and physios to actively manage injuries in a centralized platform and receive data driven insights into recovery and the efficacy of treatment. Static Balance Testing - InStep has a prebuilt static balance module that is an adaptation of the mBESS protocol. Static balance is a key metric for many neurological disorders and injuries (e.g. concussion) and by using InStep’s static balance module you receive data driven insights both on your balance while healthy and when injured. It is the perfect aid to existing health protocols for contact sports. Dynamic Balance Testing - Walking is the best passive system check out there. It’s the walk to work or the bus where you can get the best read on your overall system health. InStep’s walk module allows athletes to record their walk and establish their Movement Fingerprint through our proprietary AI so athletes and physios can monitor changes to movement as athletes progress through a season or return from an injury. Team Management - If you are a physio, clinician, or part of the team staff, often you will need to manage and make decisions across multiple players. InStep’s athlete management portal allows you to track and test all the athletes on your team from a centralized view on your own device. Terms of Service Data Use & Privacy Policy - ​​https://www.myinstep.com/privacy Study Description - https://www.myinstep.com/studyconsent

Screenshots

InStep Movement Analytics4 screens

Verdict

The call

The clearest difference is ads: King at none against InStep Movement Analytics's shown. King also leads on monetization model (free vs ad-supported) and iOS requirement (9.0 vs 14.2). InStep Movement Analytics's advantage is device support (3 vs 1). On price, rating, ratings volume and update cadence 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for King against 5.0 for InStep Movement Analytics. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

King ships an update every 2 months, InStep Movement Analytics monthly. The most recent releases landed on June 11, 2026 and September 10, 2026 respectively.

Scorecard4 real differences · 5 level
King versus InStep Movement Analytics: the parameters behind the verdict, then further details
ParameterKingInStep Movement Analytics
PriceFreeFree
Rating5.0 (2 ratings)5.0 (1 ratings)
Number of ratings2 — better1
Update frequencyEvery 2 monthsMonthly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPadiPhone, iPad, iPod — better
Requires iOS9.0 — better14.2
Further details — not scored
Size243 MB202 MB
Age rating4+4+
DeveloperKing-Devick Test LLCInStep

Customer experience

King

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

InStep Movement Analytics

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

King

No in-app purchases

None

InStep Movement Analytics

No in-app purchases

Questions

Is King free?
King is free to download, with no in-app purchases.
Is InStep Movement Analytics free?
InStep Movement Analytics is free to download, with no in-app purchases.
Which has better reviews, King or InStep Movement Analytics?
King and InStep Movement Analytics are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.
Do King or InStep Movement Analytics have ads?
InStep Movement Analytics shows ads; King does not.
Which is updated more often, King or InStep Movement Analytics?
King ships an update every 2 months, and InStep Movement Analytics monthly. Most recently, King was updated on June 11, 2026 and InStep Movement Analytics on September 10, 2026.

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