Sperminal: Sperm Health
Male Fertility Tracker
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Sperm Health & Male Fertility
Your sperm aren't "today." They're the result of the last 74 days.
Sperminal turns that invisible process into something you can actually see, track, and influence.
Log your daily habits. Watch how they shape the four active batches of sperm your body is producing right now — each at a different stage, each responding differently to what you do today.
This isn't guesswork. It's a living pipeline.
HOW IT WORKS
Your body is always producing sperm across a ~74-day cycle, followed by ~2 weeks of maturation — a ~90-day window where today's habits quietly shape tomorrow's pipeline.
Sperminal models this as four overlapping cohorts, each moving through the pipeline in real time.
• Log key behaviours like sleep, exercise, alcohol, heat exposure, and illness
• See instant projected impact before you commit your day
• Track which cohorts are in their critical window — where your actions matter most
• Follow your overall trajectory: Improving, Stable, At Risk, or Declining
AT A GLANCE
• Live Impact Preview — see how today's choices will affect your future
• Critical Window Alerts — know when it matters most
• Daily Focus — the single highest-impact action for today
• Daily Reminder — a gentle nudge to log your day
• 90-Day History — trends, heatmaps, and score tracking
• Partner Sharing — share progress without exposing personal logs
WHY IT'S DIFFERENT
Fertility apps have always been built for cycle tracking. Sperminal is built for the other half of the equation — the side nobody tracks.
Instead of waiting, testing, or guessing, you get a daily feedback loop tied to how sperm actually develop.
BUILT ON RESEARCH
The model is informed by published research on spermatogenesis timing, heat sensitivity, alcohol effects, sleep quality, exercise, and recovery from illness.
A full list of references is included in the app.
PRIVATE BY DESIGN
No accounts. No cloud. No tracking. No ads.
Everything stays on your device.
Start shaping the 90 days ahead of you.
IMPORTANT
Sperminal is an educational, behaviour-awareness tool — not a medical device. It does not diagnose, treat, or predict any condition. The scores are simplified models based on research, not clinical measurements. Always consult a qualified healthcare provider for medical advice.
SUBSCRIPTION INFORMATION
Sperminal offers a subscription with a 3-day free trial and full access to all features. The subscription will automatically renew unless turned off in your Apple ID account settings at least 24 hours before the current period ends. You can manage or cancel your subscription at any time in your Apple ID settings. Your Apple ID will be charged when the purchase is confirmed. If you subscribe before your free trial ends, any remaining free trial time is forfeited as soon as the purchase is confirmed.
Terms of Service: https://nigelware.com/legal/sperminal/terms-of-service.html
Privacy Policy: https://nigelware.com/legal/sperminal/privacy-policy.html
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
Minor bug fixes and performance improvements
The developer, Nigelware, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Glen Bentley
- Size
- 9.8 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Pro Access $4.99
- Copyright
- © Nigelware, 2026