Random Walk Simulator vs Fizzik
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Random Walk Simulator
Simulate random walks in 1D or 2D space. Adjust step distance and directions to generate stochastic patterns. Save your generated images directly to your device's photo album.
- 1D and 2D random walk simulation
- Adjustable step distance
- Adjustable number of directions
- Stochastic pattern generation
- Save images to photo album
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Random Walk Simulator is a simple simulation tool of random walk in 1D / 2D space. Number of directions and maximum travel distance of each step can be changed. Different patterns will be drawn stochastically depending on these parameters. You can save resulting images to photo album.
Fizzik
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Create mesmerizing and relaxing physics simulations that move, sing, and respond to your touch. Fizzik is a pocket physics sandbox for iPhone and iPad. Fill the scene with with marbles, shape how they move, then turn every ripple, swing, tumble, and orbit into music. Start from a template or roll the dice for an instant surprise, and then make every detail your own. DIFFERENT WAYS TO PLAY • Wave Grid - send ripples through shifting 3D marble sculptures. • Pendulum - build hypnotic waves that drift in and out of sync. • Tilt - pour marbles off the platform by moving your device, and shake to toss them. • Orbit - shape a glowing galaxy around a gravity well • PRO: Bounce Field - watch as the marbles bounce in waves and eventually settle • PRO: Chamber - watch as marbles bounce off of the sides of the chamber in rhythmic patterns SCULPT EVERY DETAIL • Tune speed, gravity, friction, bounce, patterns, shapes, viewing angle, glow, platforms, color, and more. Control the scene with touch controls. Use the randomize option to randomize all of the parameters. EVERY SCENE SINGS • Choose an instrument, scale, key, and octave. Add echo and space, shape how motion maps to melody, or compose your own looping tune note by note. CREATE, EXPLORE, AND SHARE • Keep a synced collection of your creations and organize your favourites • Publish original scenes to Explore, where other makers can play, like, and save them. • Browse trending, top, or random community feeds • Share any published creation directly with other users via Share Codes. • Keep creating offline after you've signed in; changes sync when your connection returns. FIZZIK PRO While Fizzik is free to use, an optional Fizzik Pro auto-renewable subscription unlocks: • Looping video exports for Wave Grid and Orbit simulations. • Custom palette and platform colors, every backdrop, and the full instrument library. • Unlimited access to Explore and the ability to save from Explore. • Build Bounce Field and Chamber simulations. • A collection size of up to 2,000 simulations. Monthly and yearly plans unlock the same Pro features. Payment is charged to your Apple Account at confirmation. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel at any time in your Apple Account subscription settings. Terms of Service: https://www.fizzik.app/terms Privacy Policy: https://www.fizzik.app/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Random Walk Simulator at none against Fizzik's 2. Random Walk Simulator also leads on iOS requirement (15.6 vs 18.0). Fizzik's advantage is ads (none vs shown) and update cadence (every 5 days vs every 103 months). On price 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. Fizzik sells 2 in-app purchases, starting at $6.99 per month. Random Walk Simulator asks for nothing beyond the download.
Random Walk Simulator ships an update every 103 months, Fizzik every 5 days. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.
| Parameter | Random Walk Simulator | Fizzik |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 103 months | Every 5 days — better |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 5 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Kentaro Wada | Daitoku Corp. |
In-app purchases
Random Walk Simulator
No in-app purchases
Fizzik
- Fizzik Pro Monthly$6.991 Month
- Fizzik Pro Yearly$59.991 Year









