NTK Portal vs ViSymulation Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NTK Portal
Read full descriptionHide full description
The “NTK Academic Group” mobile application is now available for NTK’s parents & students! With this app, you can easily check your lesson schedule, exam dates, special offers, etc. With the app, you can: - View upcoming lessons and exam dates - Check outstanding tuition fees and settle payment conveniently - Contact our Education Services Officers with a few simple taps - Receive information about NTK news, events and offers About NTK Established in 1996, NTK Learning Center is a leading educational service provider in Southeast Asia. NTK specializes in academic tuition for students following international curricula, standardized test preparation, and educational planning and consultation services.
ViSymulation Pro
Read full descriptionHide full description
"ViSymulation Pro" is an augmented reality (AR) mobile application, developed by the Department of Ophthalmology, School of Clinical Medicine of the University of Hong Kong. It aims to educate users on the visual symptoms of common vision problems. Users could gain a first-person experience of the impaired vision and the corresponding difficulties encountered by the visually impaired persons (VIPs). As a result, the public awareness of vision protection is raised while the empathetic attitude towards the visually-impaired people are developed among the community. "ViSymulation Pro" provides 2 modes: 1. "Information About Vision Problems" - For individual users - Discover the aetiology, signs and visual symptoms of vision problems - Experience visual symptoms of vision problems through the 1-minute AR simulation 2. "Create/Join Room" - For groups and events - Remote-control function: control of multiple smartphones to display desired visual symptoms to realize group-based teaching This mobile app can simulate the following vision problems with three stages of progression (mild, moderate, and severe) or the subtypes: - Diabetic Retinopathy - Cataract - Glaucoma - Age-related macular degeneration - Retinitis Pigmentosa - Retinal Detachment - Myopia - Hyperopia - Presbyopia - Astigmatism - Color Blindness (Protanopia, Tritanopia, Deuteranopia, Monochromacy) - Visual Pathway Lesions (Left Homonymous Hemianopia, Left Homonymous Superior Quadrantanopia, Left Homonymous Inferior Quadrantanopia)
Screenshots
Verdict
The clearest difference is update cadence: ViSymulation Pro at every 3 weeks against NTK Portal's every 5 weeks. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
NTK Portal ships an update every 5 weeks, ViSymulation Pro every 3 weeks. The most recent releases landed on October 26, 2026 and November 4, 2026 respectively.
| Parameter | NTK Portal | ViSymulation Pro |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 13 MB | 240 MB |
| Age rating | 4+ | 12+ |
| Developer | NTK Academic Group | HKU TELI |
In-app purchases
NTK Portal
No in-app purchases
ViSymulation Pro
No in-app purchases
Questions
Is NTK Portal free?
Is ViSymulation Pro free?
Do NTK Portal or ViSymulation Pro have ads?
Which is updated more often, NTK Portal or ViSymulation Pro?
Other comparisons















