Showing 1–20 of 1,000 ranked alternatives.
NASA
Observe weather and share data
Track environmental observations like cloud cover, land cover, and mosquito habitats. Submit data for scientific research. Access educational resources and learn about Earth systems. Share observations with the global community.
Buddy Bird Inc
Identify by photo or sound
Identify bird species through photo or sound. Receive alerts when visit. Get collectible postcard photos. Learn bird facts. Sync with smart bird feeder. Share sightings and track visits.
Robb Rutledge
Play experiments, learn about
Answer: allows users to participate in psychology experiments by playing short games. Users answer questions about emotions and behaviors. Data collected helps researchers study factors affecting and mood disorders.
FAMO Connect LLC
Identify plants and get guides
Identify plants using AI camera recognition. Save and share identification results. Access guides and disease diagnosis. View details and growth tips. Track health and progress.
University of Tennessee
Find healthy trees to study
Identify and tag healthy trees in local areas. Upload photos and location data for scientific research. Contribute to studies on tree resilience and forest health.
University of Colorado Boulder
Attend events and track assigned locations
Coordinate with the project team to attend scheduled events. Assignments include orienting the phone and placing it upside down to capture images every 30 seconds. Submit photos for scientific analysis. Track event times and locations.
Expiwell, Inc.
Track mood and complete surveys anytime
Answer: Track mood and experiences with real-time surveys and diary entries. Set reminders for assessments. Participate in research studies and provide feedback. Receive adaptive interventions based on responses.
Calc Hub, LLC
Calculate materials for projects
Calculate materials with 10 tools for gravel, soil, mulch, concrete, pavers, retaining walls, grass seed, sod, area, and volume. Input dimensions in inches, feet, yards, centimeters, or meters. Output results in US customary or metric units.
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.