VN vs ChronoAtlas 9
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VN
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VN Physics 7 is an offline study companion for Vietnamese Grade 7 students. It offers clear physics lessons, topic-based quizzes, mock exams, and engaging mini-games. Students can track learning streaks, earn badges, and review quiz history to improve exam readiness anytime, anywhere.
ChronoAtlas 9
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ChronoAtlas 9 is a Grade 9 history and geography learning studio centered on student writing. Each session follows a guided flow: reason through a prompt, explain ideas in your own words, complete a short self-check, and save the result as a reusable study note. Progress comes from saved explanations—not endless quizzes or score screens.
Screenshots
Verdict
VN and ChronoAtlas 9 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
| Parameter | VN | ChronoAtlas 9 |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 22 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Dung Do Tri | Bao Anh Vu Le |
In-app purchases
VN
No in-app purchases
ChronoAtlas 9
No in-app purchases
