Project Monarch Science vs rideslug
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.
rideslug
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Record and review your trips with precision. RideSlug captures your route using GPS while simultaneously logging accelerometer data to detect bumps, hard braking, and road conditions. **KEY FEATURES** • **GPS Route Tracking** - Automatically records your path with real-time speed and distance display. Switch between speed (km/h), distance (km), and elapsed time views with a single tap. • **Accelerometer Logging** - Captures min/max acceleration values every second, helping you identify rough roads, hard stops, or exciting moments on your ride. • **Color-Coded Event Markers** - Drop markers (red, yellow, green, blue, white) anywhere along your route. Add comments like "pothole," "nice view," or "hard braking." Quick phrase buttons let you add frequent notes with one tap. • **Time-Adjusted Events** - Pressed the button a few seconds late? Adjust the timestamp to place the marker at the correct location on your route. • **Share Your Trips** - Each trip gets a unique URL you can share with friends, family, or on social media. Viewers can explore your route on an interactive map.
Screenshots
Verdict
The clearest difference is update cadence: Project Monarch Science at every 10 days against rideslug's every 2 months. Project Monarch Science also leads on iOS requirement (15.0 vs 26.0). 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 every 10 days, rideslug every 2 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.
| Parameter | Project Monarch Science | rideslug |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (27 ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 27 — better | — |
| Update frequency | Every 10 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 83 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Cellular Tracking Technologies LLC | Edwin Olson |
In-app purchases
Project Monarch Science
No in-app purchases
rideslug
No in-app purchases
Questions
Is Project Monarch Science free?
Is rideslug free?
Do Project Monarch Science or rideslug have ads?
Which is updated more often, Project Monarch Science or rideslug?
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