# Project Monarch Science vs UmbraQRGen

The clearest difference is rating: UmbraQRGen at 5.0 against Project Monarch Science's 4.0. Project Monarch Science's advantage is update cadence (every 9 days vs every 5 months) and ratings volume (24 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UmbraQRGen holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Project Monarch Science has 24 ratings behind it against 1, so its average is the more settled of the two.

Project Monarch Science ships an update every 9 days, UmbraQRGen every 5 months. The most recent releases landed on October 8, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Project Monarch Science | UmbraQRGen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (24 ratings)](https://appshunter.io/ios/app/project-monarch-science/id6460006970/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/umbraqrgen/id6762829210/reviews)** |
| Number of ratings | **24** | 1 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 5 months |
| Monetization | Free | Free |
| Best chart rank | **#196** | — |
| Size | 83 MB | 5 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Cellular Tracking Technologies](https://appshunter.io/developer/1588087267) | [Bryan Murphy](https://appshunter.io/developer/1894867204) |

## What reviewers say

### Project Monarch Science

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

**Currently charting:** #196 Top Free · Utilities (US App Store)

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


### UmbraQRGen

[App page](https://appshunter.io/ios/app/umbraqrgen/id6762829210)

Generate various QR codes directly on your device without needing an account or internet connection. This app prioritizes user privacy by not collecting any personal information or using servers. It offers a straightforward and secure way to create QR codes.

**Highlights:** Create multiple QR code types, Offline functionality, No account or login required, No server usage, User data privacy focused

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

**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 UmbraQRGen free?

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

### Which has better reviews, Project Monarch Science or UmbraQRGen?

UmbraQRGen is rated higher. Project Monarch Science averages 4.0 out of 5 from 24 ratings, while UmbraQRGen averages 5.0 from 1 ratings.

### Do Project Monarch Science or UmbraQRGen have ads?

Neither Project Monarch Science nor UmbraQRGen shows ads.

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

Project Monarch Science ships an update every 9 days, and UmbraQRGen every 5 months. Most recently, Project Monarch Science was updated on October 8, 2026 and UmbraQRGen on September 16, 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.*