# Forge Slicer — On-device 3D print slicer

> On-device 3D print slicer (iPhone/iPad app by mark jent.)

- Source: https://appshunter.io/ios/app/forge-slicer/id6811612704 (this page in markdown: same URL + `.md`)
- Developer: [mark jent](https://appshunter.io/developer/1513024017)
- Category: Graphics & Design, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 16.6 · 3 MB
- Languages: American English
- Released: 2026-10-06
- Data updated: 2026-10-06

## What is Forge Slicer?

Forge is a complete 3D printing slicer that runs entirely on your iPhone.

Import an STL, place it on the bed, scale and rotate it, slice it, preview the toolpaths layer by layer, and export G-code to your printer — no laptop, no account, no upload.

NOTHING LEAVES YOUR PHONE

Forge contains no networking code at all. Your models are parsed, sliced and exported on the device. There is no account to create, no cloud sync, no analytics and no ads. That is not a setting you switch on — it is how the app is built.

A REAL SLICER, NOT A VIEWER

- Draft, Standard and Fine presets to start from
- Layer height and first-layer height
- Wall count, top layers and bottom layers
- Five infill patterns — Lines, Grid, Triangles, Gyroid and Concentric — with adjustable density
- Nozzle and bed temperature, with a separate first-layer temperature
- Print speed control
- Automatic retraction and a first-layer skirt
- True top and bottom surface detection, so solid faces land where they belong
- Filament length, weight and estimated print time before you commit

SET UP FOR YOUR PRINTER

Bed width, depth and maximum height. Nozzle diameter. 1.75 mm or 2.85 mm filament. Heated or unheated bed. Origin at the corner or at the bed centre for delta machines and some cartesians.

SEE IT BEFORE YOU PRINT

Preview the generated toolpaths layer by layer. Scrub through the model and see exactly where walls, infill and solid surfaces go — before you commit filament to it.

EASY TO GET MODELS IN

Open an STL from Files, iCloud Drive, AirDrop, Mail or Safari — Forge appears in Open With across the system. Six sample models are built in, including a 20 mm calibration cube, so there is something to slice the moment you install it. A built-in list of model sites points you at Printables, MakerWorld, Thingiverse and Thangs.

EXPORT ANYWHERE

AirDrop G-code straight to your Mac, email it, or save it to Files and copy it to a USB drive or SD card. You can also export the edited mesh back out as an STL, with your scale and rotation baked in.

SHORTCUTS

Import, slice and open models from the Shortcuts app.

BUILT FROM SCRATCH

Forge's geometry kernel was written specifically for this app and is checked against a verification suite of solids with hand-computed answers. Integer-precision arithmetic means contours close reliably instead of almost closing.

Forge is free. No in-app purchases, no subscriptions, no ads.

## Is Forge Slicer safe?

Not enough ratings yet to assess Forge Slicer.

## Is Forge Slicer legit?

Forge Slicer appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Forge Slicer is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-06

No release notes.

## More apps by mark jent

- [Lunio](https://appshunter.io/ios/app/lunio/id6766140172)
- [MotorScribe](https://appshunter.io/ios/app/motorscribe/id6772637735)
- [Iron Spirit](https://appshunter.io/ios/app/iron-spirit/id6777711355)
- [Facet Pop](https://appshunter.io/ios/app/facet-pop/id6782385645)

All apps by mark jent: https://appshunter.io/developer/1513024017

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-06.*