Cerebrum ID vs K
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cerebrum ID
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The Cerebrum ID app covers normal cerebrum id. The app includes lateral, inferior and superior aspects in both external and internal views, as applicable. External: landmarks, structures, cortices, Brodmann’s, lobes and blood views. Internal: landmarks, structures, cortices, Brodmann’s, limbic and ventricles views. Coronal: section view. Designed to teach cerebrum structure in two ways; touch the parts and see the names highlight or touch the name to see the part highlight. The detailed text is hidden or viewed at the touch of a button. All views include a drawing whiteboard feature for easy anointment, screen prints direct to Photos app to save, email out or print. • External ID: landmarks, structures, cortices, Brodmann’s, lobes and blood views. • Internal ID: landmarks, structures, cortices, Brodmann’s, limbic and ventricles views. • Coronal ID: section view. • Two finger pan and zoom of all views. • Drawing Whiteboard feature: ◊ Drawing: freeform lines in red, blue, green or black hue. ◊ Draw and place text directly on all views. ◊ Text: 36pt, auto wrap, non-movable in red, blue, green or black hue. ◊ Eraser: touch and rub lines and text on whiteboard to erase. ◊ Trash: one tap deletes all whiteboard lines and text. ◊ Screenshot whiteboard direct to Photos App for easy email out and printing. • iOS 6.0+ required, designed for iPad and iPhone. • Best results on iPad 4th generation/iPhone 5 and newer. The Cerebrum ID app makes learning the cerebrum easy. See the example screen shots. Get the app today!
K
This application facilitates the administration of a rapid eye movement test for reading assessment. It compares performance against age-related norms for individuals aged 6-14+, helping to identify potential candidates for reading intervention programs.
- Reads numbers from test cards
- Measures speed and accuracy
- Compares results to age norms
- Identifies candidates for intervention
- Administered in under two minutes
- Validated by peer-reviewed studies
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The King-Devick Test involves reading aloud a series of single digit numbers from left to right on three test cards. Performance is based on speed and accuracy and results are instantly compared to age-related normative data for subjects 6-14+ years old. Testing administrators can quickly identify subjects that may be prime candidates for the King-Devick Reading Acceleration Program as an effective intervention. -Reliable: K-D Test has been extensively researched and validated by peer-reviewed studies -Quick: K-D Test Pro Reading can be easily administered in two minutes or less -Objective: Performance immediately compared to age-related normative data for subjects 6-14+ years old This app is intended ONLY for professional users with an existing K-D Test Pro Reading account.
Screenshots
Verdict
The clearest difference is price: K at Free against Cerebrum ID's $4.99. K also leads on update cadence (every 14 months vs every 37 months) and iOS requirement (8.0 vs 11.0). Cerebrum ID's advantage is device support (3 vs 1). On ads 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
K is free to download; Cerebrum ID costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Cerebrum ID ships an update every 37 months, K every 14 months. The most recent releases landed on November 11, 2026 and November 2, 2026 respectively.
| Parameter | Cerebrum ID | K |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 37 months | Every 14 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 11.0 | 8.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 57 MB |
| Age rating | 4+ | 12+ |
| Developer | Blue Tree Publishing, Inc. | King-Devick Test, LLC |
In-app purchases
Cerebrum ID
No in-app purchases
K
No in-app purchases









