# Orchidometer vs YO Home Sperm Test

Orchidometer and YO Home Sperm Test both sit at 4.0 stars, but that hides the real split: 100% of Orchidometer's written reviews are positive against 25% of YO Home Sperm Test's. Orchidometer also leads on update cadence (every 11 days vs every 2 months) and chart position (#100 vs unranked). YO Home Sperm Test's advantage is price (Free vs $7.99) and ratings volume (90 vs 2). On rating, ads, in-app purchases and device support there is nothing between them.

YO Home Sperm Test is free to download; Orchidometer costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.0 for Orchidometer against 3.9 for YO Home Sperm Test. That said, the two scores are not equally well evidenced: YO Home Sperm Test has 90 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 100% of Orchidometer's written reviews are positive against 25% of YO Home Sperm Test's.

Orchidometer ships an update every 11 days, YO Home Sperm Test every 2 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Orchidometer | YO Home Sperm Test |
| --- | --- | --- |
| Price | $7.99 | **Free** |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/orchidometer/id1542541641/reviews)** | [3.9 (90 ratings)](https://appshunter.io/ios/app/yo-home-sperm-test/id1672830551/reviews) |
| Number of ratings | 2 | **90** |
| Positive reviews | **100.0% of reviews** | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 2 months |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#100** | — |
| Size | 15 MB | 103 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [TotalContent](https://appshunter.io/developer/1542541643) | [Medical Electronic Systems](https://appshunter.io/developer/1029942071) |

## What reviewers say

### Orchidometer

[App page](https://appshunter.io/ios/app/orchidometer/id1542541641)

**Currently charting:** #100 Top Paid · Medical (US App Store)

This medical app helps users measure and track testicular volume. It can be used to assess normal development, identify potential associations with conditions like Klinefelter syndrome or testicular atrophy, and monitor changes over time.

**Highlights:** Measure testicular volume, Track volume changes, Estimate Tanner stage, Assess pubertal development, Save and visualize measurements, Identify potential medical associations

**Features:** Vision Pro support

**In-app purchases:** none


### YO Home Sperm Test

[App page](https://appshunter.io/ios/app/yo-home-sperm-test/id1672830551)

This app transforms your smartphone into a semen analysis platform, assessing key metrics like sperm concentration and motility in minutes. It offers laboratory-grade analysis privately at home and records a video of sperm for viewing or sharing with experts. Resources are available to help enhance fertility.

**Highlights:** Sperm concentration analysis, Sperm motility assessment, Video recording of sperm, Private home testing, Fertility enhancement resources, Secure result storage

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Orchidometer free?

Orchidometer costs $7.99, with no in-app purchases.

### Is YO Home Sperm Test free?

YO Home Sperm Test is free to download, with no in-app purchases.

### Which has better reviews, Orchidometer or YO Home Sperm Test?

Orchidometer is rated higher. Orchidometer averages 4.0 out of 5 from 2 ratings, while YO Home Sperm Test averages 3.9 from 90 ratings.

### Do Orchidometer or YO Home Sperm Test have ads?

Neither Orchidometer nor YO Home Sperm Test shows ads.

### Which is updated more often, Orchidometer or YO Home Sperm Test?

Orchidometer ships an update every 11 days, and YO Home Sperm Test every 2 months. Most recently, Orchidometer was updated on November 3, 2026 and YO Home Sperm Test on November 3, 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.*