Math Error Lab vs Card Quest Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Math Error Lab
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Math Error Lab is a quiet notebook for learning from mistakes. Save an attempt, diagnose why it failed, then write a corrected explanation with reflection notes and a prevention plan. Over time, you build a personal library of error artifacts to revisit and learn from. Everything stays on your device.
Card Quest Studio
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CardQuest Studio is a device-only workspace for creating and reviewing Image Sessions. Build decks, capture images and notes on grid-based workspaces, and revisit outcomes through session summaries and notebook entries. Every interaction produces durable artifacts, with imports and exports handled locally through JSON bundles.
Screenshots
Verdict
Math Error Lab and Card Quest Studio 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 | Math Error Lab | Card Quest Studio |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | — |
| 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 | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | My Duyen Ha Thi | Thao Ha Viet |
In-app purchases
Math Error Lab
No in-app purchases
Card Quest Studio
No in-app purchases
Questions
Is Math Error Lab free?
Is Card Quest Studio free?
Do Math Error Lab or Card Quest Studio have ads?
Other comparisons
