Comparison

King vs Easy DEM

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

Head to head
About

King

This application assists individuals with eye movement deficits stemming from neurological impairment. It facilitates practice with an oculomotor program, presenting number targets for reading aloud to improve vision-related symptoms after brain injury. The program offers adjustable speed settings and tracks progress.

Highlights
  • Oculomotor program practice
  • Dynamic number target presentation
  • Adjustable speed settings
  • Instant outcome measures
  • Compliance monitoring
  • Requires existing account
Features
Read full description

King-Devick Recovery Practice is the companion iPad App for the K-D Recovery Acceleration Program (K-D RAP) and helps individuals with eye movement deficits as a result of neurological impairment. Why K-D Recovery Acceleration Program? Following a brain injury, up to 90% of individuals experience vision-related symptoms. K-D RAP is a web and app-based oculomotor program. The individual reads aloud dynamically presented number targets quickly on a computer or iPad. Speed settings are easily adjusted and increased with ongoing practice. K-D RAP provides instant outcome measures and compliance monitoring over the course of recovery. About this App This app can only be used with an existing King-Devick Recovery Acceleration Program account and requires internet access to function. King-Devick Recovery Practice is intended for practicing individuals. It has been validated on iPads with a 9.7" display or larger.

About

Easy DEM

This application assists in administering and scoring the DEM Test, designed for use with official Bernell materials. It offers patient management, test timing, and video recording capabilities for detailed analysis. Data is stored offline for enhanced privacy.

Highlights
  • Patient management
  • Test timing and administration
  • Manual test entry
  • Clinical diagnostic indication display
  • Video recording of examinations
  • Biometric locking (FaceID/TouchID)
Features
Read full description

Important: Please note that this application is designed to be used exclusively with the official DEM Test materials from Bernell. The use of photocopies or unauthorized versions of the test materials is strictly prohibited and constitutes a copyright violation. For accurate and compliant results, we encourage you to acquire the original materials from Bernell. Easy DEM facilitates taking the DEM Test by providing a comprehensive tool for administration and scoring. - Patient management: find all your tests for a patient in one place - Timing and administration of vertical and horizontal tests - Option to manually enter tests conducted outside the application - Display of clinical diagnostic indication (Type I, II, III, IV) when results are significant - French and English dataset, for ages 6 to 13 - Video recording: record the patient during the examination and review the exam later to refine your diagnosis - Biometric locking: secure access to the application with FaceId or TouchId All data is saved 100% offline, ensuring complete confidentiality of health data. The Easy DEM application is a tool for administration, calculation, and visualization; Easy DEM is not a diagnostic tool. Its use does not replace the official materials of Bernell, the owner of the DEM test paper supports.

Screenshots

Easy DEM4 screens

Verdict

The call

The clearest difference is price: King at Free against Easy DEM's $24.99. King also leads on iOS requirement (11.0 vs 17.6). Easy DEM's advantage is update cadence (weekly vs every 19 months). On ads, in-app purchases and device support 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

King is free to download; Easy DEM costs $24.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

King ships an update every 19 months, Easy DEM weekly. The most recent releases landed on October 7, 2026 and October 3, 2026 respectively.

Scorecard4 real differences · 6 level
King versus Easy DEM: the parameters behind the verdict, then further details
ParameterKingEasy DEM
PriceFree — better$24.99
Rating5.0 (2 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings2 — better—
Update frequencyEvery 19 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPadiPhone, iPad — better
Requires iOS11.0 — better17.6
Further details — not scored
Size178 MB5 MB
Age rating4+17+
DeveloperKing-Devick Test, LLCDokitek

Customer experience

King

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

Easy DEM

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

King

No in-app purchases

None

Easy DEM

No in-app purchases

Questions

Is King free?
King is free to download, with no in-app purchases.
Is Easy DEM free?
Easy DEM costs $24.99, with no in-app purchases.
Do King or Easy DEM have ads?
Neither King nor Easy DEM shows ads.
Which is updated more often, King or Easy DEM?
King ships an update every 19 months, and Easy DEM weekly. Most recently, King was updated on October 7, 2026 and Easy DEM on October 3, 2026.

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