BioChem Sprint 9 vs ChainPad Junior
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.
ChainPad Junior
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ChainPad Junior is a tool-like reasoning app for Grades 1–6 with one focused mode: Emoji Logic Chain. Each chain is a single-use thinking prompt where kids connect emoji ideas and write a short explanation. Every session saves a Reason Card, building a personal, on-device notebook of how they reasoned over time.
Screenshots
Verdict
The clearest difference is update cadence: BioChem Sprint 9 at every 2 days against ChainPad Junior's weekly. On price, ads, in-app purchases and device support there is nothing between them.
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.
BioChem Sprint 9 ships an update every 2 days, ChainPad Junior weekly. The most recent releases landed on October 31, 2026 and October 28, 2026 respectively.
| Parameter | BioChem Sprint 9 | ChainPad Junior |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days — better | Weekly |
| 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 | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Nguyen Khanh Vy | Hai Pham Ngoc |
In-app purchases
BioChem Sprint 9
No in-app purchases
ChainPad Junior
No in-app purchases
Questions
Is BioChem Sprint 9 free?
Is ChainPad Junior free?
Do BioChem Sprint 9 or ChainPad Junior have ads?
Which is updated more often, BioChem Sprint 9 or ChainPad Junior?
Other comparisons
