Project Monarch Science vs Modus Rover
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
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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.
Modus Rover
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Designed for ease of use, Modus Rover helps election teams maintain smooth operations and resolve problems quickly.
Screenshots
Verdict
The clearest difference is update cadence: Project Monarch Science at weekly against Modus Rover's every 3 weeks. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Project Monarch Science ships an update weekly, Modus Rover every 3 weeks. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.
| Parameter | Project Monarch Science | Modus Rover |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (18 ratings) — better | — |
| Positive reviews | 45.5% of reviews | — |
| Number of ratings | 18 — better | — |
| Update frequency | Weekly — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 83 MB | 169 MB |
| Age rating | 4+ | 4+ |
| Developer | Cellular Tracking Technologies | InTech Software Solutions Inc |
In-app purchases
Project Monarch Science
No in-app purchases
Modus Rover
No in-app purchases
Questions
Is Project Monarch Science free?
Is Modus Rover free?
Do Project Monarch Science or Modus Rover have ads?
Which is updated more often, Project Monarch Science or Modus Rover?
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