Neuro Assistant vs Keyhole Puzzle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Neuro Assistant
This medical app provides quick access to essential neurology, neurosurgery, and neuroradiology information. It features searchable references for stroke syndromes, nerves, anatomy, and drug information, along with calculators and summaries for clinical practice.
- Stroke syndromes reference
- Nerve and anatomy reference
- Drug pharmacokinetics and dosing
- Clinical summaries and algorithms
- Medical calculators
- Searchable content
Read full descriptionHide full description
The aim of this application is to assist in the everyday neurology, neurosurgery or neuroradiology practice by providing updated, correct, easily accessible and searchable content. Neuro Assistant includes, among other features: - Stroke syndromes reference, organised per-vessel. - Cranial and peripheral nerves reference. - Arterial perfusion and dermatome maps. - Detailed anatomy reference of cerebral arteries and veins. - Pharmacokinetics, dosing recommendations, interactions of all antiplatelet, anticoagulant, antiepileptic and antiparkinsonian drugs. - High-yield short summaries on various topics such as emergencies, reference values, treatment algorithms, etc. - Multiple calculators for risk assessment, grading, diagnosis and classification of numerous conditions. Results from calculators can be easily emailed at a tap of a button.
Keyhole Puzzle
Read full descriptionHide full description
Keyhole Puzzle is a puzzle where you match the shape displayed on the screen to the “keyhole” shape below. You can play with just one finger. Trace the displayed shape to move it, and align it perfectly with the keyhole to advance to the next puzzle. The gameplay is very simple. Drag the shape displayed above and position it so it fits perfectly into the keyhole below. When the shape matches, you automatically advance to the next puzzle. It's a simple shape-matching puzzle with easy-to-use controls.
Screenshots
Verdict
The clearest difference is price: Keyhole Puzzle at Free against Neuro Assistant's $6.99. Neuro Assistant's advantage is update cadence (weekly vs every 2 weeks) and iOS requirement (14.0 vs 16.0). 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
Keyhole Puzzle is free to download; Neuro Assistant costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Neuro Assistant ships an update weekly, Keyhole Puzzle every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Neuro Assistant | Keyhole Puzzle |
|---|---|---|
| Price | $6.99 | Free — better |
| Rating | 4.5 (12 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 12 — better | — |
| Update frequency | Weekly — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 64 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | Neuraxis AB | 順天堂大学 |
In-app purchases
Neuro Assistant
No in-app purchases
Keyhole Puzzle
No in-app purchases
Questions
Is Neuro Assistant free?
Is Keyhole Puzzle free?
Do Neuro Assistant or Keyhole Puzzle have ads?
Which is updated more often, Neuro Assistant or Keyhole Puzzle?
Other comparisons















