BioChem Sprint 9 vs ExplainShift
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BioChem Sprint 9
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Offline Grade 9 Bio+Chem Study Sprint Studio. Each sprint ends with a saved result, a required “In my own words…” note, and (if needed) a Mistake Reason. Revision Mode uses your notes + reasons to build Focus Sets and create revision cards you keep.
ExplainShift
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ExplainShift helps you test understanding by reshaping one explanation into short, analogy, and technical forms. Lock a core meaning, compare each version, flag drift, and save a clear Shift Record.
Screenshots
Verdict
BioChem Sprint 9 and ExplainShift 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 | BioChem Sprint 9 | ExplainShift |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 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 | 20 MB | 34 MB |
| Age rating | 4+ | 4+ |
| Developer | Nguyen Khanh Vy | Thang Ha Van |
In-app purchases
BioChem Sprint 9
No in-app purchases
ExplainShift
No in-app purchases
Questions
Is BioChem Sprint 9 free?
Is ExplainShift free?
Do BioChem Sprint 9 or ExplainShift have ads?
Other comparisons
