Poly Reducer 3D

Content rating
Everyone
10+
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Content rating
Everyone
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About this app

Poly Reducer 3D lightens your 3D models directly from your phone.

Open an STL or OBJ file, move the slider, and reduce the number of triangles
while maintaining the model's shape. Perfect for 3D printing, sharing
lighter files, or preparing models for apps and games.

FEATURES
• Open .STL and .OBJ files (ASCII and binary)
• High-quality polygon reduction (edge-collapse) with real-time preview
• Quickly view original, current triangles, and estimated file size
• Export back to STL or OBJ
• Viewing modes: wireframe, faceted, smooth
• Rotate and orient the model: with your finger or with exact degrees (X/Y/Z)
• Fixed views (front, back, side, top, bottom) and turntable auto-rotation
• iOS-style interface, light and dark theme, customizable palettes
• Works offline too

No account, no hassle: open, reduce, export.

Keywords: STL, OBJ, polygon reduction, mesh decimation, optimize mesh,
3D printing, lighten 3D model, reduce triangles, 3D viewer.
Updated on
Jul 26, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new

Corretto il salvataggio dei file esportati: ora puoi scegliere dove salvarli — Drive, Dropbox, ecc
Content rating
Everyone
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App support

About the developer
ANTONIO COSIMO
valmax2@gmail.com
Via Giovanni Battista Tiepolo n97 silea di treviso 31057 Treviso Italy