# Project Monarch Science

> Crowdsourced monarch butterfly migration tracking using smartphone receivers. (iPhone/iPad app by Cellular Tracking Technologies.)

- Source: https://appshunter.io/ios/app/project-monarch-science/id6460006970 (this page in markdown: same URL + `.md`)
- Developer: [Cellular Tracking Technologies](https://appshunter.io/developer/1588087267)
- Category: Utilities, Education
- Price: Free
- Rating: 3.80/5 from 16 App Store ratings · 9 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 88 MB
- Languages: American English
- Released: 2023-09-13
- Data updated: 2026-08-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/project-monarch-science/id6460006970/reviews.md

## What is Project Monarch Science?

Project Monarch is an effort to leverage recent advances in tracking technology, that have enabled the development of the world’s smallest tracking devices, to track Monarch migration.

The tracking devices on the monarch butterflies transmit at the same frequency as Bluetooth which means that everyone with a smartphone is carrying around a receiver in their pocket!  This revolutionary approach can potentially create the largest wildlife tracking receiver network in the world, but only if members of the public download and use the free Project Monarch app.

These data will allow scientists to track the movements of monarch butterflies in detail never previously imagined.  We will see how monarchs utilize key stopping points along migratory routes and learn more about the speed and direction of migration, helping identify the most important sites for habitat conservation and restoration.  Ultimately, this technology can help guide conservation planning and lead to increases in monarch populations.

## Key features

- Crowdsourced tracking network
- Monarch butterfly migration monitoring
- Detailed movement data
- Habitat conservation insights
- Utilizes Bluetooth frequency
- Citizen science participation

## Recent user reviews (9 of 9)

All indexed reviews: https://appshunter.io/ios/app/project-monarch-science/id6460006970/reviews.md

### 1/5 — No email confirmation for 1 year of trying

*2026-07-16*

If this is a serious “citizen science project” I should be allowed to join. (I am master naturalist certified.) I have been trying on and off for a year. IF you are selective about your participants fine - indicate so in app signup!

### 1/5 — Password Reset Fail

*2026-06-11*

I want this app to work. I’ve spent a redonkulous amount if time trying to get my login to work. I’m on iphone 16 running iOS 26.5.

### 5/5 — Citizen science in action

*2026-02-05*

Love this app, so fun to track individuals. I haven’t captured any tags yet, but I have put in a lot of effort in cool places that are currently missing on the map. Please add a feature for tracking effort and null findings.

### 1/5 — No App support

*2025-11-25*

I downloaded this app a week ago & have been unable to get an email account verification.

### 1/5 — Never got confirmation email

*2025-11-21*

I tried to register twice but never got a confirmation email.

### 1/5 — Page not found

*2025-11-19*

Is this app active?

### 5/5 — Where can I get Tags?

*2025-10-03*

This is great, a big step forward in tracking monarchs. Where do average citizens get tags to increase the number of monarchs tracked?

### 5/5 — Hurray for citizen science!

*2024-10-08*

My only complaint is that you don’t have a record of the butterflies you found to follow their history. Or if there’s a way to favorite butterflies. 

It would be a great Girl Scout/boy/eagle to make signs for butterfly gardens that include a QR code for folks to download the app. I know this is early stages but I’m so looking forward for this to expand and would love to learn how to tag butterflies myself!

### 5/5 — Cool app, but it needs more people to downlaod

*2023-11-30*

I am in Philadelphia- no monarchs nearby. All the monarchs identified in the app are in southern New Jersey - mostly in Cape May dates from Oct thru mid Nov 2023. Do the scientists know where the butterflies might be now?  It would be good to let people know so we can tell others to download the app.  It would great if you add a share app option so people can easily notify others who might be in the butterfly migration path

## Frequently asked questions about Project Monarch Science

### What is Project Monarch Science?

Project Monarch Science is a free app that uses your smartphone to help track monarch butterfly migrations. It leverages tiny tracking devices on butterflies that transmit at Bluetooth frequencies, turning your phone into a receiver for this data.

### How does Project Monarch Science help conservation?

The data collected by Project Monarch Science allows scientists to study monarch migration patterns in detail. This information is crucial for identifying key habitats and informing conservation strategies to help increase monarch populations.

### Is Project Monarch Science available on all devices?

Project Monarch Science is supported on iPhone, iPad, and iPod devices. The app is designed to be accessible to a wide range of users with Apple mobile devices.

### What is the age rating for Project Monarch Science?

Project Monarch Science has an age rating of 4+. This indicates it is suitable for children and general audiences.

### How often is Project Monarch Science updated?

The latest version of Project Monarch Science is 4.0.2, last updated on September 25, 2025. This suggests regular updates to improve functionality and data collection.

### Does Project Monarch Science have ads?

No, Project Monarch Science does not contain advertisements. The app is completely free to download and use without any ad interruptions.

### What is the user sentiment for Project Monarch Science?

Project Monarch Science has received overwhelmingly positive feedback, with an average rating of 5.0 stars from 6 ratings. This indicates users are highly satisfied with the app's purpose and functionality.

### When was Project Monarch Science first released?

Project Monarch Science was first released on September 13, 2023. This makes it a relatively new application focused on leveraging recent tracking technology.

## Version history (last 5 releases)

### 4.0.2 — 2025-09-25

-Updates for 2025
-Minor bug fixes

### 4.0.1 — 2025-09-22

Updates for 2025!

### 4.0.0 — 2025-09-11

-Updated for 2025!
-Improved UI
-Now includes detections for CTT Blu+ Expanded network!

### 1.6 — 2024-09-19

Minor UI updates

### 1.5 — 2024-09-10

Minor Updates for the 2024 Season!

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## More apps by Cellular Tracking Technologies

- [CTT Mobile](https://appshunter.io/ios/app/ctt-mobile/id1610872429)
- [CTT Marine](https://appshunter.io/ios/app/ctt-marine/id6502104757)

All apps by Cellular Tracking Technologies: https://appshunter.io/developer/1588087267

## Related topics

[project monarch](https://appshunter.io/ios/topics/project-monarch) · [project monarch science](https://appshunter.io/ios/topics/project-monarch-science) · [project monarch science app](https://appshunter.io/ios/topics/project-monarch-science-app) · [butterfly migration](https://appshunter.io/ios/topics/butterfly-migration) · [monarchs](https://appshunter.io/ios/topics/monarchs) · [monarch](https://appshunter.io/ios/topics/monarch)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*