# AlgalSex vs Chray Zanst Teacher

AlgalSex and Chray Zanst Teacher are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AlgalSex ships an update every 6 weeks, Chray Zanst Teacher every 4 weeks. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | AlgalSex | Chray Zanst Teacher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (9 ratings)](https://appshunter.io/ios/app/algalsex/id339965821/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 182 MB | 41 MB |
| Requires iOS | 15.4 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TSUCHIKANE](https://appshunter.io/developer/339965824) | [BALEN STAR](https://appshunter.io/developer/1896510859) |

## What reviewers say

### AlgalSex

[App page](https://appshunter.io/ios/app/algalsex/id339965821)

Explore the life cycle of algae with this educational application. Designed for iPhone and iPod touch, it offers a visual learning experience for users interested in phycology.

**Highlights:** Observe algae life cycle, Phycological education, iPhone and iPod touch compatible, Visual learning tool

**Features:** macOS Compatibility

**In-app purchases:** none


### Chray Zanst Teacher

[App page](https://appshunter.io/ios/app/chray-zanst-teacher/id6792031849)

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

**In-app purchases:** none


## Frequently asked questions

### Is AlgalSex free?

AlgalSex is free to download, with no in-app purchases.

### Is Chray Zanst Teacher free?

Chray Zanst Teacher is free to download, with no in-app purchases.

### Do AlgalSex or Chray Zanst Teacher have ads?

Neither AlgalSex nor Chray Zanst Teacher shows ads.

### Which is updated more often, AlgalSex or Chray Zanst Teacher?

AlgalSex ships an update every 6 weeks, and Chray Zanst Teacher every 4 weeks. Most recently, AlgalSex was updated on October 23, 2026 and Chray Zanst Teacher on October 20, 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.*