Physics 9 vs SourceLens
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Physics 9
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Physics 9 is a fully offline app for Grade 9 students, bundling lessons, practice, assessments, mini-games, and progress tracking. The app runs without backend, audio, or internet, and saves XP, streaks, and coins locally.
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
Physics 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 | Physics 9 | SourceLens |
|---|---|---|
| Price | Free | Free |
| 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 | 20 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Dung Nguyen Tan | Canh Nguyen Xuan |
In-app purchases
Physics 9
No in-app purchases
SourceLens
No in-app purchases
