# BioCaL vs Kemistri

The clearest difference is update cadence: BioCaL at every 2 days against Kemistri's every 5 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. BioCaL sells 1 one-off in-app purchase and Kemistri sells 4 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

BioCaL ships an update every 2 days, Kemistri every 5 weeks. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | BioCaL | Kemistri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 5 weeks |
| Size | 23 MB | 45 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yoshikazu Mikawa](https://appshunter.io/developer/1778069380) | [EdBetter Limited](https://appshunter.io/developer/1810500957) |

## What reviewers say

### BioCaL

[App page](https://appshunter.io/ios/app/biocal/id6476985449)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| BioCaL Premium Access | $4.99 | one-time |


### Kemistri

[App page](https://appshunter.io/ios/app/kemistri/id6757977295)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access Pass | $3.99 | per month |
| Quarterly Access Pass | $9.99 | per 3 months |
| Semiannual Access Pass | $17.99 | per 6 months |
| Annual Access Pass | $24.99 | per year |


## Frequently asked questions

### Is BioCaL free?

BioCaL is free to download, with in-app purchases available.

### Is Kemistri free?

Kemistri is free to download, with in-app purchases available.

### Do BioCaL or Kemistri have ads?

Neither BioCaL nor Kemistri shows ads.

### Which is updated more often, BioCaL or Kemistri?

BioCaL ships an update every 2 days, and Kemistri every 5 weeks. Most recently, BioCaL was updated on October 15, 2026 and Kemistri on October 12, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*