# US Ecotopia vs Project Monarch Science

US Ecotopia and Project Monarch Science 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.

Both ship on a similar rhythm, roughly every 10 days. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | US Ecotopia | Project Monarch Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (29 ratings)](https://appshunter.io/ios/app/project-monarch-science/id6460006970/reviews)** |
| Number of ratings | — | **29** |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | Every 10 days |
| Monetization | — | Free |
| Size | 137 MB | 83 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Druid Tech, LLC](https://appshunter.io/developer/1683282655) | [Cellular Tracking Technologies](https://appshunter.io/developer/1588087267) |

## What reviewers say

### US Ecotopia

[App page](https://appshunter.io/ios/app/us-ecotopia-animal-tracker/id6448024917)

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

**In-app purchases:** none


### Project Monarch Science

[App page](https://appshunter.io/ios/app/project-monarch-science/id6460006970)

This app transforms your smartphone into a receiver for tiny tracking devices attached to monarch butterflies. By crowdsourcing data, it helps scientists monitor butterfly migration patterns in unprecedented detail, aiding conservation efforts.

**Highlights:** Crowdsourced tracking network, Monarch butterfly migration monitoring, Detailed movement data, Habitat conservation insights, Utilizes Bluetooth frequency, Citizen science participation

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

**In-app purchases:** none


## Frequently asked questions

### Is US Ecotopia free?

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

### Is Project Monarch Science free?

Project Monarch Science is free to download, with no in-app purchases.

### Do US Ecotopia or Project Monarch Science have ads?

Neither US Ecotopia nor Project Monarch Science shows ads.

### Which is updated more often, US Ecotopia or Project Monarch Science?

US Ecotopia ships an update every 10 days, and Project Monarch Science every 10 days. Most recently, US Ecotopia was updated on November 7, 2026 and Project Monarch Science 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.*