King vs Ice Den Performance
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Objective sideline concussion screening
- Assess eye movements and attention
- Administer baseline and post-injury tests
- Works offline
- Suitable for ages 5+
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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.
Ice Den Performance
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | King | Ice Den Performance |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 9.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 243 MB | 130 MB |
| Age rating | 4+ | 4+ |
| Developer | King-Devick Test LLC | Ice Den Performance, LLC |
In-app purchases
King
No in-app purchases
Ice Den Performance
No in-app purchases








