3D Filter vs Meld
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
3D Filter
Create a unique 3D effect in your photos using Chromostereopsis. This app makes red elements appear to pop out and blue elements recede, adding a mesmerizing depth to your portraits.
- 3D photo transformation
- Chromostereopsis effect
- Depth illusion
- Portrait enhancement
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Transform your portrait photos into 3D based on Chromostereopsis! See red pop and blue recede for a mesmerizing depth effect.
Meld
Create and paint 3D models directly on your iPad. Offers robust modeling and topology tools, along with texture painting capabilities. Supports various export formats and includes a free tier with optional Pro features.
- Polygon modeling tools (Extrude, Bevel, Loop Cut)
- Topology editing (Split, Dissolve, Bridge)
- Texture painting with Apple Pencil pressure sensitivity
- PBR material channels (Roughness, Metallic)
- Multiple light types and camera placement
- OBJ, glTF, GLB, USDZ import/export
- Autosave and 3D file previews
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Meld is a polygon modeler and texture painter built for iPad and iPhone. Topology editing tools, rebuilt for use with touch and Apple Pencil. MODELING Extrude, Inset, Bevel, Loop Cut, Knife, Edge Slide and Subdivide. Extrude along the region, the normals or each face individually. Bevel edges or vertices with adjustable segments and profile shape. Cut loops with even spacing and slide them into place. Every tool opens a settings panel after you commit, so you can dial in an exact amount, add a segment, or change a profile without undoing and starting again. Move, rotate and scale with gizmos in global or local orientation, or transform freely with an axis constraint when you need one direction only. TOPOLOGY Split, separate, dissolve and delete across every selection mode. Fill and bridge edges. Merge vertices by distance or at their center. Flip normals, shade smooth or flat, join objects together. Full undo and redo on everything. PAINTING Paint color directly onto your model with Apple Pencil, using pen pressure. Roughness, metallic and emissive channels let a surface read as worn metal, wet plastic or a glowing sign. Unwrap UVs with smart unwrap. LIGHTING AND RENDERING Point, spot, directional and area lights. Place cameras, frame a shot at the aspect ratio you want, and capture it. Ray traced shadows and reflections on supported devices. Import reference images to model against. Fly through your scene or orbit it, in perspective or orthographic, with instant front, side and top views. FILES Import and export OBJ, glTF, GLB and USDZ. Export a single object or the whole scene. Exporting models requires Meld Pro. Scenes autosave as you work, and the file browser shows a real 3D preview of every one. Your files stay on your device, and export to formats every other tool already speaks. Terms of Service: https://meld3d.app/terms.html Privacy Policy: https://meld3d.app/privacy.html NINE LANGUAGES English, Spanish, French, German, Portuguese, Russian, Japanese, Korean and Chinese.
Screenshots
Verdict
The clearest difference is rating: 3D Filter at 5.0 against Meld's 4.0. 3D Filter also leads on in-app purchases (none vs 2). Meld's advantage is ratings volume (3 vs 1). On price, update cadence, 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. Meld sells 2 in-app purchases, starting at $5.99 per month. 3D Filter asks for nothing beyond the download.
3D Filter holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.
3D Filter ships an update every 4 days, Meld every 3 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.
| Parameter | 3D Filter | Meld |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.0 (3 ratings) |
| Positive reviews | — | 66.7% of reviews |
| Number of ratings | 1 | 3 — better |
| Update frequency | Every 4 days | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.0 — better | 18.5 |
| Further details — not scored | ||
| Size | 40 MB | 264 MB |
| Age rating | 4+ | 4+ |
| Developer | Maimaitiming Abudukadier | Meld Systems LLC |
Customer experience
3D Filter
Meld
In-app purchases
3D Filter
No in-app purchases
Meld
- Monthly$5.991 Month
- Annual$39.991 Year





