ChemForge 9 vs ChronoAtlas 9
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
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
ChemForge 9 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 | ChemForge 9 | ChronoAtlas 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 | 31 MB | 28 MB |
| Age rating | 4+ | 4+ |
| Developer | Phuong Ma Thi | Bao Anh Vu Le |
In-app purchases
ChemForge 9
No in-app purchases
ChronoAtlas 9
No in-app purchases
Questions
Is ChemForge 9 free?
Is ChronoAtlas 9 free?
Do ChemForge 9 or ChronoAtlas 9 have ads?
Other comparisons
