# Complex Map vs Fourier App

The clearest difference is in-app purchases: Fourier App at none against Complex Map's 1. Complex Map's advantage is ads (none vs shown) and iOS requirement (7.1 vs 13.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Complex Map sells 1 one-off in-app purchase. Fourier App asks for nothing beyond the download.

Complex Map ships an update every 2 months, Fourier App every 3 months. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Complex Map | Fourier App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/complex-map/id827104452/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 5 MB | 30 MB |
| Requires iOS | **7.1** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TinkaTinka](https://appshunter.io/developer/505803809) | [Sthefano Schiavon](https://appshunter.io/developer/1882733645) |

## What reviewers say

### Complex Map

[App page](https://appshunter.io/ios/app/complex-map/id827104452)

This app visualizes complex variable functions by transforming images mapped to the complex plane. It allows users to import their own images or use predefined ones, and export the results.

**Highlights:** Complex function parser, Predefined and custom image import, Image export and sharing, Supports standard functions and constants

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


### Fourier App

[App page](https://appshunter.io/ios/app/fourier-app/id6760314201)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Complex Map free?

Complex Map is free to download, with in-app purchases available.

### Is Fourier App free?

Fourier App is free to download, with no in-app purchases.

### Do Complex Map or Fourier App have ads?

Fourier App shows ads; Complex Map does not.

### Which is updated more often, Complex Map or Fourier App?

Complex Map ships an update every 2 months, and Fourier App every 3 months. Most recently, Complex Map was updated on October 11, 2026 and Fourier App on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*