Formulas & Forces Lab vs ChemForge 9
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Formulas & Forces Lab
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Formulas & Forces Lab is an offline study portfolio for 6th grade Math and Physics. Instead of focusing on scores, students produce study artifacts: Explain-It cards, Worked-Solution rewrites, Mistake Pattern cards, session summaries, and revision plans. Practice and review prompts are used to generate reflections and structured write-ups that stay on-device. A built-in portfolio exporter creates a shareable PDF notebook from recent artifacts and active revision plans. No accounts, no analytics, and no network access—everything is bundled locally and stored privately on the device.
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.
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Verdict
Formulas & Forces 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 | Formulas & Forces 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 | 22 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Tuan Do Bao | Phuong Ma Thi |
In-app purchases
Formulas & Forces Lab
No in-app purchases
ChemForge 9
No in-app purchases
Questions
Is Formulas & Forces Lab free?
Is ChemForge 9 free?
Do Formulas & Forces Lab or ChemForge 9 have ads?
Other comparisons
