BioChemAR vs GoatHSK
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BioChemAR
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Use BiochemAR to explore the 3-dimensional structures of biological molecules in the real world! All you need to do is point your camera at the QR codes associated with the BiochemAR. In order to use the module: 1) Download and install BiochemAR onto either your mobile or tablet device. 2) Download and print the QR code and instructions. (https://apps.carleton.edu/people/rsung/assets/BiochemAR_KscA_channel_QR_code_instructions.pdf) If you would like to customize the size of the QR code, here is the QR code image file (PNG). (https://apps.carleton.edu/people/rsung/assets/KscA_channel_QR_code_image.png) 3) Start up the app and point your device camera at the QR code to quickly load up two different representations of the KscA channel!
GoatHSK
This offline flashcard app helps you learn HSK vocabulary levels 1-9. It uses spaced repetition to adapt to your memory, ensuring efficient review without overwhelming you with known words. All 11,000+ entries are available in one place.
- Offline HSK vocabulary learning
- Supports HSK levels 1-9
- 11,000+ vocabulary entries
- Spaced repetition (FSRS-5)
- No account or subscription required
- No user tracking
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GOAT HSK is an offline flashcard app for the official HSK 2021 vocabulary standard all 11,000+ entries across levels 1 through 9, in one app, with no account, no subscription, and no tracking. Built around modern spaced repetition (FSRS-5), it adapts to how well you actually remember each word, so reviews stay on schedule without flooding you with cards you already know.
Screenshots
Verdict
The clearest difference is price: BioChemAR at Free against GoatHSK's $2.99. On update cadence, 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
BioChemAR is free to download; GoatHSK costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
BioChemAR ships an update fortnightly, GoatHSK weekly. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.
| Parameter | BioChemAR | GoatHSK |
|---|---|---|
| Price | Free — better | $2.99 |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 232 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Carleton College | Matthias Holl |
In-app purchases
BioChemAR
No in-app purchases
GoatHSK
No in-app purchases
