Comparison

King vs KMK Optometry Coaching

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 helps individuals with a history of migraines detect the early prodrome phase before a headache begins. It uses a guided eye movement test with automated speech recognition to analyze performance and compare it to past results, potentially aiding in timely treatment.

Highlights
  • Migraine prodrome detection
  • Saccadic eye movement test
  • Automated speech recognition analysis
  • Comparison to historical test data
  • Guided test administration
  • Early intervention support
Read full description

The easy-to-use King-Devick Migraine Headache Early Detection (MiHED™) iPad App is intended for use by an individual with a history of Migraine Headache in order to detect the prodrome (pre-headache) phase of a migraine attack. The prodrome often occurs 1-6 hours prior to the headache phase of the migraine attack. This product may therefore forecast an oncoming migraine headache. Peer reviewed published research has shown that administering certain migraine headache treatment medication in the prodromal (pre-headache) stage can be effective in reducing the effects of, or even preventing the migraine headache attack. The App will guide individuals through the King-Devick Test. It is a test of saccadic eye movements which requires users to read aloud randomly spaced single-digit numbers as quickly and accurately as possible on three progressively more difficult screen patterns. Peer reviewed published research has shown by using innovative automated speech recognition technology, the App will instantly analyse a user’s King-Devick Test performance and compare results to any previous King-Devick Test history available. Subscribers will be able to administer unlimited King-Devick Tests for one individual. Please note, this App is only compatible with iPad, iPad Air and iPad Pro (not compatible with iPhone or iPad Mini). MiHED should only be used in conjunction with professional medical advice, diagnosis, or treatment and not as a substitute or a replacement for it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

KMK Optometry Coaching

This platform connects optometry students preparing for board exam retakes with a supportive community. It offers live feeds, collaborative spaces, and expert coaching sessions to enhance learning and motivation.

Highlights
  • Live feed with quiz questions and learning tips
  • Collaborative learning spaces
  • Direct chat with colleagues and coaches
  • Live streaming expert coaching events
  • Community support for board exam retakes
Features
Read full description

The KMK Coaching Community is an exclusive learning platform for optometry students who have purchased KMK Coaching and are preparing for a retake of NBEO® Part 1 and/or 2 boards. Joining a community of learners is very powerful. Being able to connect with other people going through the same experience helps students find inspiration and commitment. That is why we bring together content and community. Designed to bring students out of isolation, get them in the right mindset, and improve their learning tactics, no one should have to prepare for a retake on boards alone. LIVE FEED Quiz questions, motivating posts, learning tips, and on-demand connection with fellow colleagues and our Coaches helps students feel supported so they are more prepared than ever. SPACES Collaborative spaces designed around an area of focus, we can create communities within a community for more private, personalized attention. Students bring their best every week and push each other. COLLABORATION Chat with colleagues or Coaches about anything! Keep a conversation moving with comments, tags and interactions. The more you lean on the KMK Coaching Community the more you get out of it. LIVE EVENTS Join live streaming events and gain insight from our expert Coaches. From Small Group Coaching to Community Live, our Coaches break down difficult concepts and stretch your knowledge weekly. COMMUNITY No one should have to battle a retake alone - it’s one of the worst things an optometry student can do. Join a Community designed to put boards behind you, and your career as an optometrist in front of you.

Screenshots

KMK Optometry Coaching4 screens

Verdict

The call

The clearest difference is in-app purchases: KMK Optometry Coaching at none against King's 1. KMK Optometry Coaching also leads on update cadence (weekly vs every 2 months) and ratings volume (34 vs 2). King's advantage is iOS requirement (12.0 vs 17.0). On price, rating, ads and monetization model 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. King sells 1 in-app purchase, starting at $7.99 per month. KMK Optometry Coaching asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

King holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: KMK Optometry Coaching has 34 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

King ships an update every 2 months, KMK Optometry Coaching weekly. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 5 level
King versus KMK Optometry Coaching: the parameters behind the verdict, then further details
ParameterKingKMK Optometry Coaching
PriceFreeFree
Rating5.0 (2 ratings) — better4.8 (34 ratings)
Number of ratings234 — better
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPadiPhone, iPad — better
Requires iOS12.0 — better17.0
Further details — not scored
Size220 MB129 MB
Age rating12+9+
DeveloperKing-Devick Test, LLCKMK Optometry

Customer experience

King

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

KMK Optometry Coaching

All ratings34 ratings
Positive94.1%
Neutral2.9%
Negative2.9%

In-app purchases

1 purchases

King

Subscriptions1
  • 1 Month Subscription$7.991 Month
None

KMK Optometry Coaching

No in-app purchases

Questions

Is King free?
King is free to download, with in-app purchases available.
Is KMK Optometry Coaching free?
KMK Optometry Coaching is free to download, with no in-app purchases.
Which has better reviews, King or KMK Optometry Coaching?
King is rated higher. King averages 5.0 out of 5 from 2 ratings, while KMK Optometry Coaching averages 4.8 from 34 ratings.
Do King or KMK Optometry Coaching have ads?
Neither King nor KMK Optometry Coaching shows ads.
Which is updated more often, King or KMK Optometry Coaching?
King ships an update every 2 months, and KMK Optometry Coaching weekly. Most recently, King was updated on October 13, 2026 and KMK Optometry Coaching on October 25, 2026.

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