English Study Lab vs ChemForge 9
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
English Study Lab
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An app for English learners. Practice vocabulary with flashcards and quizzes, study grammar with lessons and MCQs, and improve reading with leveled passages. All content is stored in local JSON, with XP, streaks, and bookmarks
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
English Study Lab 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 | English Study Lab | 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 | 19 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Berat KELEK | Phuong Ma Thi |
In-app purchases
English Study Lab
No in-app purchases
ChemForge 9
No in-app purchases
Questions
Is English Study Lab free?
Is ChemForge 9 free?
Do English Study Lab or ChemForge 9 have ads?
Other comparisons
