Nurdle Patrol vs Mini Secchi
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Nurdle Patrol
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Nurdle Patrol Mobile App is a free citizen science app dedicated to tracking plastic pellet pollution (commonly called nurdles) across coastlines and waterways, removing them from the environment, and raising public awareness about this growing issue. With Nurdle Patrol you can report nurdle sightings, contribute real data to scientific research, and join a growing community of volunteers protecting our coastlines. Download for free and start making an impact today.
Mini Secchi
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The Secchi disk is a white disk that is lowered into the water and the depth at which it disappears and reappears from sight is logged. This depth is proportional to the clarity or transparency of the water. The Forel Ule colour scale is used to classify the colour of natural waters.It consists of 21 colours ranging from blue to green to yellow to brown, and is used alongside the Secchi disk with the observer typically recording the colour of a submerged Secchi disk with this app. The app will guide you through each measurement, store location data, photos and additional observations.
Screenshots
Verdict
The clearest difference is update cadence: Mini Secchi at every 5 weeks against Nurdle Patrol's every 3 months. Nurdle Patrol's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Nurdle Patrol ships an update every 3 months, Mini Secchi every 5 weeks. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.
| Parameter | Nurdle Patrol | Mini Secchi |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 211 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Texas A&M University - Corpus Christi | DDQ |
In-app purchases
Nurdle Patrol
No in-app purchases
Mini Secchi
No in-app purchases
Questions
Is Nurdle Patrol free?
Is Mini Secchi free?
Do Nurdle Patrol or Mini Secchi have ads?
Which is updated more often, Nurdle Patrol or Mini Secchi?
Other comparisons
