OPJMS vs WRK | World Knowledge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OPJMS
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OPJMS app will assist school staff with features to manage school administration includes academics , attendance and exam. Also the app provides a platform for content distribution and information sharing across all school team members for collaboration purpose.
WRK | World Knowledge
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Learning IATA airport codes and their location in the world, is a big part of the lessons World Knowledge (WRK) at MBO College Airport. The app is built to help you study and prepare for the tests.
Screenshots
Verdict
The clearest difference is update cadence: OPJMS at every 2 months against WRK | World Knowledge's every 26 months. OPJMS also leads on iOS requirement (12.0 vs 14.0). 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.
OPJMS ships an update every 2 months, WRK | World Knowledge every 26 months. The most recent releases landed on May 19, 2026 and September 20, 2026 respectively.
| Parameter | OPJMS | WRK | World Knowledge |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months — better | Every 26 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 66 MB | 478 MB |
| Age rating | 4+ | 17+ |
| Developer | Shri Educare Limited | Ilonka Rebergen |
In-app purchases
OPJMS
No in-app purchases
WRK | World Knowledge
No in-app purchases
Questions
Is OPJMS free?
Is WRK | World Knowledge free?
Do OPJMS or WRK | World Knowledge have ads?
Which is updated more often, OPJMS or WRK | World Knowledge?
Other comparisons
