# Federgraph

> Federgraph (iPhone/iPad app by Gustav Schubert.)

- Source: https://appshunter.io/ios/app/federgraph/id670940947 (this page in markdown: same URL + `.md`)
- Developer: [Gustav Schubert](https://appshunter.io/developer/670940970)
- Category: Education, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 29 MB
- Languages: English
- Released: 2013-08-01
- Data updated: 2026-06-07
- User reviews in markdown: https://appshunter.io/ios/app/federgraph/id670940947/reviews.md

## What is Federgraph?

Federgraph is a function plotter app to visualize a special built in function z = f(x, y) in 3D. The physical model behind the app is a system of springs.

The built in function produces a variety of colorful pictures, some of which appear to have a face. 

Changing the parameters of the physical model will trigger a recalculation of the image.


## Version history (last 5 releases)

### 1.7.0 — 2026-05-19

This version focuses on preparing for a 3D printed version of mesh. The default shape can be closed and colors can be changed more easily. This will give you a preview of how the printed figure will look like.

### 1.6.2 — 2025-06-07

This version allows for previewing PLA colors, so that you can see how the 3D-printed figure will look like.

### 1.5 — 2023-12-14

This version is a bigger update, now built with Delphi 12.

### 1.4 — 2015-10-26

This app has been updated by Apple to display the Apple Watch app icon.

Update for iOS 9.

### 1.2 — 2013-11-09

This version has multiple pages for buttons and  improved coloring options for the graph.

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## More apps by Gustav Schubert

- [Trimm 420](https://appshunter.io/ios/app/trimm-420/id989762941)

All apps by Gustav Schubert: https://appshunter.io/developer/670940970

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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 2026-06-07.*