VN vs ChemForge 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 G8 is an offline learning companion for Vietnamese Grade 8 students. It includes lessons, glossary entries, practice questions, daily challenges, and mini-games. The app tracks dark and light mode, text scaling, XP, streaks, badges, completed lessons, and mistake review to support effective study.
ChemForge 9
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ChemForge 9 is a Grade 9 chemistry practice studio focused on reasoning and writing. Work through prompts, explain ideas in your own words, and turn errors into corrections you can revisit. Scores are optional signals, while your saved notes and revisions become the real study material—kept locally on your device.
Screenshots
Verdict
VN and ChemForge 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 | ChemForge 9 |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Fortnightly |
| 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 | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Dang Khuong Tran | Phuong Ma Thi |
In-app purchases
VN
No in-app purchases
ChemForge 9
No in-app purchases
