Project Monarch Science vs CheckOut Master
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Project Monarch Science
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.
- Crowdsourced tracking network
- Monarch butterfly migration monitoring
- Detailed movement data
- Habitat conservation insights
- Utilizes Bluetooth frequency
- Citizen science participation
Read full descriptionHide full description
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.
CheckOut Master
Easily manage and track important equipment, especially in educational settings. This application simplifies the checkout process for shared resources.
- Equipment checkout tracking
- Classroom equipment management
- Easy-to-use interface
- Designed for educational settings
Read full descriptionHide full description
Designed specifically with classrooms in mind. Keep track of important equipment with an easy to use checkout process.
Screenshots
Verdict
The clearest difference is price: Project Monarch Science at Free against CheckOut Master's $1.00. Project Monarch Science also leads on ratings volume (29 vs 1) and iOS requirement (15.0 vs 18.0). CheckOut Master's advantage is rating (5.0 vs 4.0) and update cadence (every 2 days vs every 10 days). On 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
Project Monarch Science is free to download; CheckOut Master costs $1.00 up front. Neither carries in-app purchases, so what you see is what you pay.
CheckOut Master 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 29 ratings behind it against 1, so its average is the more settled of the two.
Project Monarch Science ships an update every 10 days, CheckOut Master every 2 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Project Monarch Science | CheckOut Master |
|---|---|---|
| Price | Free — better | $1.00 |
| Rating | 4.0 (29 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 29 — better | 1 |
| Update frequency | Every 10 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 83 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Cellular Tracking Technologies | Michael Rosenblatt |
Customer experience
Project Monarch Science
CheckOut Master
In-app purchases
Project Monarch Science
No in-app purchases
CheckOut Master
No in-app purchases
Questions
Is Project Monarch Science free?
Is CheckOut Master free?
Which has better reviews, Project Monarch Science or CheckOut Master?
Do Project Monarch Science or CheckOut Master have ads?
Which is updated more often, Project Monarch Science or CheckOut Master?
Other comparisons
