Physics Toolbox Accelerometer vs Ocean 4D+
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Physics Toolbox Accelerometer
This app uses your device's accelerometer to measure and graph G-Force and acceleration over time. It allows you to record and export data as a CSV file, making it useful for analyzing motion in vehicles, vibrations, and educational physics experiments.
- Measures G-Force and acceleration
- Graphs G-Force vs. Time
- Graphs Acceleration vs. Time
- Records and exports data as CSV
- Analyzes motion in vehicles and vibrations
- Useful for classroom physics experiments
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Turn your iPhone into a motion laboratory. Physics Toolbox Accelerometer reads the accelerometer built into your device and shows exactly what it measures — live, in three dimensions, in units you can check. MEASURE • G-Force — the ratio of normal force to gravity, in X, Y, Z and total magnitude • Linear Acceleration — the same motion with gravity removed, in m/s² • Spectrum — a live FFT that finds the dominant frequency in a vibration RECORD AND ANALYSE • Record any run to CSV, then replay it with duration, maximum and average • Import CSV files recorded elsewhere and analyse them the same way • Share a recording straight from the app BUILT FOR TEACHING Each mode explains the physics behind it: how a piezoresistive cantilever bends under acceleration, how a capacitive accelerometer varies the electric potential across its plates, and why an object in free fall reads zero g. PRO A single lifetime purchase unlocks the signal filters — moving average, Kalman and low-pass — and analysis of saved and imported recordings. Works on iPhone and iPad, in light and dark, with VoiceOver throughout.
Ocean 4D+
Explore a vibrant underwater world with augmented reality. Bring marine creatures to life in your environment, interact with them, and learn fascinating facts about their habitats and conservation status.
- Cardless Augmented Reality
- Interactive 3D marine creatures
- Realistic animations
- Digital Encyclopedia of marine animals
- Conservation status information
- Habitat and diet details
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From the cute clown anemonefish to various fascinating sharks, Ocean 4D+ is here to take you on an underwater marine voyage. CARD & CARDLESS AUGMENTED REALITY EXPERIENCE Place the 3D marine creatures directly in your environment or scan the cards available on our website below to summon the animals right in front of you. INTERACTION Tap the creatures to watch some realistic animations and pair them up with the available interactive objects to see their reactions. DIGITAL ENCYCLOPEDIA Visit the 3D Library feature to learn more about many amazing marine animals. Be aware of their conservation status and the threats they are facing. Find out about their diet, sizes, and in which ocean layer(s) do they live. * Minimum Device Requirements for Ocean 4D+: 1. Min OS (for Cardless AR feature): iOS 9 2. Min OS (for Cards AR feature): iOS 7.0 3. Processor: Qualcomm chipset, 1.2 GHz 4. RAM: 3 GB 5. Camera: 8 MPX 6. Memory card supports Augmented Reality feature 7. Not compatible with Intel Atom processor
Screenshots
Verdict
The clearest difference is review sentiment: Ocean 4D+ at 100% against Physics Toolbox Accelerometer's 38%. Ocean 4D+ also leads on update cadence (every 2 months vs every 8 months) and iOS requirement (11.0 vs 16.0). Physics Toolbox Accelerometer's advantage is rating (2.0 vs 1.0) and in-app purchases (none vs 1). On price, ads 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. Ocean 4D+ sells 1 one-off in-app purchase. Physics Toolbox Accelerometer asks for nothing beyond the download.
Physics Toolbox Accelerometer holds the better App Store score, 2.0 against 1.0. That said, the two scores are not equally well evidenced: Physics Toolbox Accelerometer has 5 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 38% of Physics Toolbox Accelerometer's written reviews are positive against 100% of Ocean 4D+'s, so the app with the better star average is not the one people write more warmly about.
Physics Toolbox Accelerometer ships an update every 8 months, Ocean 4D+ every 2 months. The most recent releases landed on September 7, 2026 and September 9, 2026 respectively.
| Parameter | Physics Toolbox Accelerometer | Ocean 4D+ |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (5 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 38.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | 1 |
| Update frequency | Every 8 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 251 MB |
| Age rating | 4+ | 4+ |
| Developer | Chrystian Vieyra | Octagon Studio Ltd |
Customer experience
Physics Toolbox Accelerometer
Ocean 4D+
In-app purchases
Physics Toolbox Accelerometer
No in-app purchases
Ocean 4D+
- All Marine Animals$2.99
Questions
Is Physics Toolbox Accelerometer free?
Is Ocean 4D+ free?
Which has better reviews, Physics Toolbox Accelerometer or Ocean 4D+?
Do Physics Toolbox Accelerometer or Ocean 4D+ have ads?
Which is updated more often, Physics Toolbox Accelerometer or Ocean 4D+?
Other comparisons
