Comparison

King vs Ice Den Performance

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

Ice Den Performance

Features
Read full description

The Ice Den Performance App is designed for hockey players and figure skaters to provide access to on-site, off-ice conditioning that gives you the edge. Conveniently located next to the Ice Den Scottsdale, the IDP enables players and skaters to compliment their on-ice training with sport specific off-ice training. Through the app, athletes can register for individual and small group private lessons, book hockey shooting lanes and interact with trainers.

Screenshots

Ice Den Performance3 screens

Verdict

The call

The clearest difference is ads: King at none against Ice Den Performance's shown. King also leads on iOS requirement (9.0 vs 14.0). Ice Den Performance's advantage is update cadence (every 3 weeks vs every 2 months) and device support (3 vs 1). On price and in-app purchases 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

King ships an update every 2 months, Ice Den Performance every 3 weeks. The most recent releases landed on June 11, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 5 level
King versus Ice Den Performance: the parameters behind the verdict, then further details
ParameterKingIce Den Performance
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS9.0 — better14.0
Further details — not scored
Size243 MB130 MB
Age rating4+4+
DeveloperKing-Devick Test LLCIce Den Performance, LLC

In-app purchases

None

King

No in-app purchases

None

Ice Den Performance

No in-app purchases

Questions

Is King free?
King is free to download, with no in-app purchases.
Is Ice Den Performance free?
Ice Den Performance is free to download, with no in-app purchases.
Do King or Ice Den Performance have ads?
Ice Den Performance shows ads; King does not.
Which is updated more often, King or Ice Den Performance?
King ships an update every 2 months, and Ice Den Performance every 3 weeks. Most recently, King was updated on June 11, 2026 and Ice Den Performance on September 17, 2026.

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