# Plotter vs iTurbo

The clearest difference is price: iTurbo at Free against Plotter's $0.99. iTurbo also leads on rating (5.0 vs 1.0). Plotter's advantage is update cadence (every 7 months vs every 54 months) and iOS requirement (11.0 vs 18.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

iTurbo is free to download; Plotter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iTurbo holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Plotter ships an update every 7 months, iTurbo every 54 months. The most recent releases landed on September 30, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Plotter | iTurbo |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [1.0 (2 ratings)](https://appshunter.io/ios/app/plotter/id305997268/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/iturbo/id314368331/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 54 months |
| Monetization | Paid | **Free** |
| Size | 1 MB | 2 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [ManneTroll Solutions](https://appshunter.io/developer/313743954) |

## What reviewers say

### Plotter

[App page](https://appshunter.io/ios/app/plotter/id305997268)

Easily plot graphs of mathematical functions by entering formulas and specifying a range. Supports multiple functions and offers interactive chart themes. Share your plots via email.

**Highlights:** Plot graphs of functions, Enter formulas and specify range, Plot multiple functions, Interactive chart themes, Email charts and formulas

**Features:** macOS Compatibility

**In-app purchases:** none


### iTurbo

[App page](https://appshunter.io/ios/app/iturbo/id314368331)

This app simulates fluid dynamics by solving Navier-Stokes equations for 2D incompressible turbulence. It uses a direct numerical simulation method with Euler time stepping and Fourier space calculations for efficiency.

**Highlights:** Direct Numerical Simulation (DNS), Navier-Stokes equation solver, 2D incompressible turbulence, Euler time stepping, Fourier space calculations, Vorticity field transformation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Plotter free?

Plotter costs $0.99, with no in-app purchases.

### Is iTurbo free?

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

### Which has better reviews, Plotter or iTurbo?

iTurbo is rated higher. Plotter averages 1.0 out of 5 from 2 ratings, while iTurbo averages 5.0 from 1 ratings.

### Do Plotter or iTurbo have ads?

Neither Plotter nor iTurbo shows ads.

### Which is updated more often, Plotter or iTurbo?

Plotter ships an update every 7 months, and iTurbo every 54 months. Most recently, Plotter was updated on September 30, 2026 and iTurbo on September 29, 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.*