Playground Physics vs Relay Smart Agent
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Playground Physics
Record videos of motion, trace paths, and analyze physics concepts like forces and energy. This tool helps educators bring Newton's Laws to life with interactive graphs and slow-motion playback. Ideal for middle and high school science.
- Record and analyze motion in videos
- Trace paths and examine movement
- Interactive scrubbable graphs
- Slow-motion playback
- Calculate forces and energy
- Save and share performance videos
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Discover and explore the physics in your own movements. Record a video of you or your friends, tap points along the way to trace a path of motion, and discover the motion, forces, and energy involved. Educators can make Newton’s Laws of motion come alive with an app that was named one of Fast Company’s Top 10 mobile apps! Join a community of educators making inspiring learning experiences with Noticing Tools. “Playground Physics is one of the most fun units that I’ve done in a long time. I’ve been teaching about 12 years, and everybody had a great time.” - Stacey, 8th grade science teacher In Playground Physics, you can: * Record a video of a performance or choose a stock video. * Tap points along the video to trace a path of motion. * Examine your performance closely with scrubbing video controls. * Enter known measurements (height of an object, mass of the object being tracked) in English or metric units to reveal accurate data of your performance. * Explore interactive, scrubbable graphs synchronized to the video playback. Graphs display the distance traveled and speed along the path in horizontal and vertical vectors. * Add stickers to mark important moments in the performance (and for a laugh!). * Play your video back in slow motion to closely examine your movements. * Explore how distance, speed, and direction changes when things move. * Understand how a person's or object's potential and kinetic energy change as they move. * Save your performance as videos with data overlays or editable scenes. * Share your performance videos or transfer editable scenes to other cloud services and apps through use of the Files app. Ideal for middle and high school school science classrooms, Playground Physics and accompanying curriculum activities are aligned to and embody the Next Generation Science Standards (NGSS) by integrating core ideas, scientific practices, cross-cutting concepts, and delight! The new 2023 edition of the curriculum is freely available at: https://noticing.nysci.org/apps/playground-physics/ Playground Physics is one of the Noticing Tools (TM) from the New York Hall of Science. The full suite includes Choreo Graph, Fraction Mash, Size Wise, Volumize, and Picture Dots. Noticing Tools were developed in collaboration with Local Projects, an award-winning media design firm based in New York. http://localprojects.com/
Relay Smart Agent
This application offers web filtering and safety features for iOS devices, ensuring CIPA compliance for schools. It provides on and off-campus protection and reports on student activity, acting as a hardware-free cloud solution.
- CIPA compliant web filtering
- On/off campus safety
- Student activity reporting
- Hardware-free cloud solution
- Anytime, anywhere filtering
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This app provides anytime, anywhere filtering, safety, and reporting on iOS devices for schools using the Relay web filter from Lightspeed Systems. With the Relay Smart Agent for iOS, schools get: CIPA compliant web filtering On/off campus safety Reporting on student activity A hardware-free cloud solution And more!
Screenshots
Verdict
The clearest difference is rating: Playground Physics at 4.6 against Relay Smart Agent's 1.2. Playground Physics also leads on review sentiment (40% vs 0%). Relay Smart Agent's advantage is update cadence (every 2 months vs every 5 months) and ratings volume (33 vs 5). On price, ads, in-app purchases and monetization model 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.
Playground Physics holds the better App Store score, 4.6 against 1.2. That said, the two scores are not equally well evidenced: Relay Smart Agent has 33 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 40% of Playground Physics's written reviews are positive against 0% of Relay Smart Agent's.
Playground Physics ships an update every 5 months, Relay Smart Agent every 2 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Playground Physics | Relay Smart Agent |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | 1.2 (33 ratings) |
| Positive reviews | 40.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 | 33 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 45 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | New York Hall of Science | Lightspeed Solutions, LLC |
Customer experience
Playground Physics
Relay Smart Agent
In-app purchases
Playground Physics
No in-app purchases
Relay Smart Agent
No in-app purchases
Questions
Is Playground Physics free?
Is Relay Smart Agent free?
Which has better reviews, Playground Physics or Relay Smart Agent?
Do Playground Physics or Relay Smart Agent have ads?
Which is updated more often, Playground Physics or Relay Smart Agent?
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