Current rank
Real water, live on your iPhone. Draw a shape with your finger or build one in 3D, and watch water pour over, under and around it as it happens. PocketFlow runs a real free-surface water simulation on your phone's GPU. It isn't an animation: every frame is solved by our own solver, so the water splashes, jumps and settles because the physics says so. BRING YOUR OWN MODEL (STL) Import a 3D model from CAD or a 3D-print file: from Build, Files, Mail or AirDrop. Choose the unit it was made in and
Competitors
Full chartTop of Paid · Education in Australia. PocketFlow: Water Simulator is #31 there. Changes are over 7 days.
- #1 (number one)New entry
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The Universal SandpitCraig Smith
Store listing
How the app presents itself on the App Store. Select a screenshot to open it full size.
What's new
Version 3.1 · 20 Oct 2026 · today
New in 3.1: • Bring your own 3D model: import an STL from Build, Files, Mail or AirDrop. Pick its unit and a model scale (the largest that fits is suggested), and full-scale numbers follow your scale. • New template, Mystery dam: a dam and spillway built from an STL at 1:100. The dry valley fills, spills, and the jump forms in the stilling basin. • Models and shapes can poke through the walls and floor; only the part inside the tank counts. • Snap guides, duplicate in place, and resizable 2D shapes. • Sides: "Allow inflow" on water levels, and "Start empty" for a dry start. • Iso, Front, Top and Side views in Build, clearer In and Out numbers, and many small fixes.
Current rankings
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| Australia· Paid · Education · best #31 · 1 day | #31 | New entry | Change unknown | #31 | 1 |
Rank history
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Ranking events
Entries, big moves, #1s and new versions we've recorded.
- Entered the Paid · Education chart at #31Australia