# ForgeShape: 3D Print Repair — STL, STEP Check & Converter

> STL, STEP Check & Converter (iPhone/iPad app by Shanghai Fuwei Information Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/forgeshape-3d-print-repair/id6801400880 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Fuwei Information Technology Co., Ltd.](https://appshunter.io/developer/6801400882)
- Category: Graphics & Design, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 29 MB
- Languages: American English, German (Germany), Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-09-01
- Data updated: 2026-09-08
- User reviews in markdown: https://appshunter.io/ios/app/forgeshape-3d-print-repair/id6801400880/reviews.md

## What is ForgeShape?

A print fails and the model still looks fine on screen. ForgeShape opens STL, STEP, IGES, OBJ, GLB and 3MF models on your device, finds what blocks printing — open edges, wrong normals, thin walls, overhangs — repairs it, and exports STL or 3MF for your slicer. It also converts between CAD and mesh formats. Nothing is ever uploaded.

Key features:

- Import STEP (.step/.stp), IGES (.iges/.igs), STL, OBJ, binary GLB and 3MF models, all parsed on device
- Automatic detection: open edges, non-manifold edges, self-intersection (up to 500k triangles), surface orientation, duplicate faces, degenerate triangles, wall thickness, overhang, units and size
- Each body is classified as a solid candidate or an open shell; closed manifold models report a measured volume
- Guided repairs: weld and stitch boundaries, fix surface orientation, remove duplicate faces, fill small holes, remove degenerate triangles, or run them all in sequence
- Every repair previews before/after side by side and applies only when you confirm; deep repair escalates tolerance until the model closes and reports how far the geometry moved
- Pick a finding to highlight the affected edges and faces, or let the camera turn to frame it on the far side of the model
- Inspect it your way: shaded, wireframe or both, Y-up and Z-up conventions, focus on any surface point, and level of detail that keeps large meshes responsive
- Select a face to measure planar width, height and area, or cylinder radius, in source units
- Fit the model to a print-size profile with one uniform scale, then recheck automatically
- The print line exports STL or 3MF; the conversion line exports OBJ, GLB, STL, 3MF or STEP
- Source colors are read and shown: OBJ materials, 3MF color groups and baked textures, GLB base colors; on export only GLB carries color
- Optional Reverse to CAD: recognized planar and cylindrical faces become analytic geometry in an exported STEP
- Honest reports: every check names its mesh-snapshot evidence and lists what remains unresolved

For 3D-printing users, engineers converting between STEP/IGES and mesh formats, makers fixing scanned or downloaded models, and teams delivering in multiple formats.

Common questions:

- Is ForgeShape a slicer?
  No. It handles the step before slicing — checking and repairing the model — and does not generate G-code.

- Can it repair every broken model?
  No. Issues beyond the supported scope — non-manifold edges, large openings — are labelled as not automatically repairable. Deep repair closes more models, but states how much the shape changed; applying it is your decision.

- Does Reverse to CAD recover the full design?
  Unrecognized regions stay triangle mesh, and the exported STEP is not a full reconstruction: no feature history, and no guarantee of a machinable solid.

- Are models uploaded to a server?
  Never. Import, checking, repair, measurement and export all happen on device. No account, no cloud, and you choose where files are saved.

Pricing & Access

- Free: import and view every supported format, run every check, and apply every repair.
- Pro subscription: export and save files, and locate findings on the model. Weekly, monthly or annual, active on Mac, iPhone, iPad and Vision Pro with the same Apple Account.
- Payment is charged to your App Store account. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the current period ends.
- Manage or cancel subscriptions in your App Store account settings.

Privacy & Terms

- Subscriptions, refunds and restores are handled by Apple through your App Store account.
- Privacy Policy: https://h53d.github.io/fs/policy.html
- Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Need help or want to share feedback? Email iuway@foowei.com or visit https://h53d.github.io/fs/support.html.

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Monthly | $9.99 | per month |
| Pro Annual | $99.99 | per year |



## Version history (last 1 release)

### 26.08.25 — 2026-09-01

No release notes.

## More apps by Shanghai Fuwei Information Technology Co., Ltd.

- [STEP Reviewer Pro](https://appshunter.io/ios/app/step-reviewer-pro/id6791591460)

All apps by Shanghai Fuwei Information Technology Co., Ltd.: https://appshunter.io/developer/6801400882

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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 2026-09-08.*