ZYIS App vs PSIS4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZYIS App
This app provides information about a trilingual school offering Khmer, Chinese, and English programs from pre-school to high school. It details the school's accreditation, founders, and multiple campus locations, highlighting its expansion due to demand.
- Trilingual education programs (Khmer, Chinese, English)
- Preschool to high school levels
- School accreditation details
- Founder information
- Multiple campus locations
- Expansion updates
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Zhong Ying International School is a trilingual school that offers Khmer, Chinese, and English programs from pre-school to high school and is accredited by Cambodian Ministry of Education, Youth and Sport. It is founded by 2 Cambodian entrepreneurs who are very passionate about education. The founding fathers are Mr. Om Seng Bora， also known as a founder of CEO Institute and CEO Master Club, and Mr. Seng Vannarith. The school has been operated since 9th September 2018. Currently, there are three campuses respectively Chhouk Meas Pochentong, AEON 2, Takhmao, Psar Depo, and Toul Tompoung. We are expanding more due to parent's demands and needs of students.
PSIS4
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PSIS4 Mobile App is the platform for parents and students easily check and track the study performance, attendances, timetable, and much more. This platform has main functionality as below: - Track student attendance - Check student's study result - Check timetable - School announcements - Notifications - Invoices - Communicate between parents/students with school - ...
Screenshots
Verdict
The clearest difference is update cadence: ZYIS App at every 5 weeks against PSIS4's every 20 months. ZYIS App also leads on device support. On price, in-app purchases and iOS requirement 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.
ZYIS App ships an update every 5 weeks, PSIS4 every 20 months. The most recent releases landed on November 3, 2026 and September 22, 2026 respectively.
| Parameter | ZYIS App | PSIS4 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 weeks — better | Every 20 months |
| Ads | Yes | — |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod — better | — |
| Requires iOS | 15.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 92 MB | 30 MB |
| Age rating | 17+ | 4+ |
| Developer | Panha Sa | YONG SOKHENG |
In-app purchases
ZYIS App
No in-app purchases
PSIS4
No in-app purchases
