# Project Monarch Science vs UnitWise Compare

The clearest difference is price: Project Monarch Science at Free against UnitWise Compare's $1.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Project Monarch Science is free to download; UnitWise Compare costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Project Monarch Science | UnitWise Compare |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.0 (24 ratings)](https://appshunter.io/ios/app/project-monarch-science/id6460006970/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Free | — |
| Size | 83 MB | 35 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cellular Tracking Technologies](https://appshunter.io/developer/1588087267) | [BRITTANY DANIELLE HORNICK](https://appshunter.io/developer/1862326510) |

## What reviewers say

### 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


### UnitWise Compare

[App page](https://appshunter.io/ios/app/unitwise-compare/id6757508823)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Project Monarch Science free?

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

### Is UnitWise Compare free?

UnitWise Compare costs $1.99, with no in-app purchases.

### Do Project Monarch Science or UnitWise Compare have ads?

Neither Project Monarch Science nor UnitWise Compare shows ads.

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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.*