Mega World vs ObservMemo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mega World
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EasyAR Mega provides city-scale AR cloud solution, and empowers culture and tourism, business area, education, industry and many other businesses with flexible acquisition scheme, leading mapping and localization ability and user-friendly toolchain. we can get mega at：www.easyar.com
ObservMemo
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Let's see if you have a sharp eye for observation; Can you glance at something and remember the little details in life? 试试看你有没有敏锐的观察力； 你是否可以扫一眼就记住生活中的一些细节？
Screenshots
Verdict
The clearest difference is price: Mega World at Free against ObservMemo's $1.99. On update cadence, 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
Mega World is free to download; ObservMemo costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Mega World ships an update fortnightly, ObservMemo every 3 weeks. The most recent releases landed on September 20, 2026 and September 7, 2026 respectively.
| Parameter | Mega World | ObservMemo |
|---|---|---|
| Price | Free — better | $1.99 |
| Update frequency | Fortnightly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 124 MB | 178 MB |
| Age rating | 4+ | 4+ |
| Developer | EasyAR | Liu ZhiRong |
In-app purchases
Mega World
No in-app purchases
ObservMemo
No in-app purchases
