# AlgalSex vs Protozoan Identification

The clearest difference is review sentiment: AlgalSex at 100% against Protozoan Identification's 0%. AlgalSex also leads on rating (2.8 vs 2.0) and update cadence (every 6 weeks vs every 15 months). Protozoan Identification's advantage is iOS requirement (13.0 vs 15.4). On price, ads, in-app purchases and monetization model there is nothing between them.

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

AlgalSex holds the better App Store score, 2.8 against 2.0. That said, the two scores are not equally well evidenced: AlgalSex has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of AlgalSex's written reviews are positive against 0% of Protozoan Identification's.

AlgalSex ships an update every 6 weeks, Protozoan Identification every 15 months. The most recent releases landed on July 13, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | AlgalSex | Protozoan Identification |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.8 (10 ratings)](https://appshunter.io/ios/app/algalsex/id339965821/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/protozoan-identification/id506715288/reviews) |
| Number of ratings | **10** | 1 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 15 months |
| Monetization | Free | Free |
| Size | 182 MB | 221 MB |
| Requires iOS | 15.4 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TSUCHIKANE](https://appshunter.io/developer/339965824) | [Carolina Biological Supply](https://appshunter.io/developer/413708533) |

## 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


### Protozoan Identification

[App page](https://appshunter.io/ios/app/protozoan-identification/id506715288)

Explore a collection of protozoan images and videos. Features an interactive key, labeling activities, and practice exercises to aid in identification and study.

**Highlights:** Interactive dichotomous key, Labeling activities, Protozoan images and videos, Practice exercises, Study aids

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AlgalSex free?

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

### Is Protozoan Identification free?

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

### Which has better reviews, AlgalSex or Protozoan Identification?

AlgalSex is rated higher. AlgalSex averages 2.8 out of 5 from 10 ratings, while Protozoan Identification averages 2.0 from 1 ratings.

### Do AlgalSex or Protozoan Identification have ads?

Neither AlgalSex nor Protozoan Identification shows ads.

### Which is updated more often, AlgalSex or Protozoan Identification?

AlgalSex ships an update every 6 weeks, and Protozoan Identification every 15 months. Most recently, AlgalSex was updated on July 13, 2026 and Protozoan Identification on June 5, 2026.

---

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