ChemForge 9 vs SourceLens
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.
SourceLens
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SourceLens helps you examine sources through structured cards, claim notes, quote links, comparison views, and case file packets. Write your own analysis, connect related cards, and export organized dossiers for study or review.
Screenshots
Verdict
ChemForge 9 and SourceLens 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 | SourceLens |
|---|---|---|
| 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 | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Phuong Ma Thi | Canh Nguyen Xuan |
In-app purchases
ChemForge 9
No in-app purchases
SourceLens
No in-app purchases
