Wafer vs Kuu3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Wafer
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Drawing Tools: - Brushes with full pressure and tilt support - Lasso clips, gradients, wet painting and blur - Stencils, decals and stamps - Custom brush tip shapes and alphas Layers: - Full layer system with canvas and procedural fills. - Paint on layer masks for multi-layer painting and non-destructive workflows. - Color blend modes and opacity controls. Painting System: - Paint on the 3D mesh or the 2D UV view - 3D brush falloff with no seam artifacts - 3D and 2D symmetry with configurable pivots - Configurable unlit, shaded and PBR viewport rendering. Multichannel Painting: - Paint color, roughness, metallic at the same time with any tool. - Standard PBR channels or custom shader domain inputs per layer - Apply complete materials with masks and fill layers Performance: - Brush speed stays the same regardless of texture resolution or layer count - Texture resolution and layer count only limited by device memory. - Supports 16K textures on any compatible iPad, to 24K on iPad Pro 3rd gen 2018. - Energy efficient for long painting sessions Scene and Exporting: - Multiple meshes and texture sets per document. - Configurable exporter to pack channels into any texture setup - Configurable over resolution, format, texture content and packing. Extras - Built-in image reference board - Influence system to control tool effect by normals, topology, UV islands or custom maps - Asset library with stencils, triplanar projections, brush alphas and decals
Kuu3D
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3D data, beautifully and clearly. Kuu3D is a 3D viewer for iPhone and iPad. It supports USDZ, OBJ, STL, glTF / GLB and PLY (point cloud). Open files from the Files app, AirDrop, or the Share sheet of other apps. EASY TO LOOK AT Operate with your fingertips. Rotate with one finger, pan and zoom with two, twist two fingers to tilt, double-tap to show the whole model. Switch between softly shaded MatCap materials to study the form itself. Sky, dusk, night, or sakura: choose a background to suit your mood and your data. Wireframe view to check the flow of the mesh. Drag the circle on screen to change the light direction freely. Change the field of view to adjust perspective. Turntable mode slowly rotates the model so you can take it all in. Grab the toolbar and move it to the top of the screen if you like. HANDY FOR CHECKING See dimensions. The unit is guessed from the file format and can be changed. Get notified when a model's face directions (normals) look reversed. Large files are displayed as smoothly as possible. SIMPLE AND PRIVATE Save your favorite files in the library. No network access. Your files never leave the device, and no personal data is collected. Almost every feature is free. The one-time purchase "Unlock All Features" removes the limits on the turntable (free users get a half turn) and the library size (free users can save 3 files). It is not a subscription. SUPPORTED FORMATS USDZ / USD, OBJ, STL, glTF / GLB, PLY (point cloud) Note: animation playback is not supported.
Screenshots
Verdict
Wafer and Kuu3D are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Wafer sells 1 one-off in-app purchase and Kuu3D sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Wafer ships an update every 5 days, Kuu3D weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Wafer | Kuu3D |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (17 ratings) — better | — |
| Positive reviews | 57.1% of reviews | — |
| Number of ratings | 17 — better | — |
| Update frequency | Every 5 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 52 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Sparseal SL | Hirofumi Tanjo |
In-app purchases
Wafer
- Exporting and Saving Documents$19.99
Kuu3D
- Unlock All Features$4.99





