ForceForge 9 vs ProofSketch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ForceForge 9
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ForceForge 9 is a Grade 9 physics practice studio designed like a personal lab notebook. Students complete short workshop runs, explain their reasoning, and save LabNotes. When a mistake happens, a FixCard records the misconception and corrected rule to support long-term understanding.
ProofSketch
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ProofSketch helps you structure mathematical proofs through theorem cards, linked proof steps, lemmas, dependency maps, revision history, and PDF export. It does not generate proofs, verify correctness, provide hints, or evaluate accuracy.
Screenshots
Verdict
ForceForge 9 and ProofSketch 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 | ForceForge 9 | ProofSketch |
|---|---|---|
| Price | Free | Free |
| Update frequency | — | Every 5 days |
| 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 | 27 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Dinh Le Thi | Simge nur Karadag |
In-app purchases
ForceForge 9
No in-app purchases
ProofSketch
No in-app purchases
Questions
Is ForceForge 9 free?
Is ProofSketch free?
Do ForceForge 9 or ProofSketch have ads?
Other comparisons
