# Graph³ vs Calcu

The clearest difference is price: Calcu at Free against Graph³'s $0.99. Calcu also leads on in-app purchases (none vs 1) and update cadence (every 3 days vs every 3 weeks). Graph³'s advantage is iOS requirement (9.0 vs 15.0). On ads and device support there is nothing between them.

Calcu is free to download; Graph³ costs $0.99 up front. Graph³ sells 1 one-off in-app purchase. Calcu asks for nothing beyond the download.

Graph³ ships an update every 3 weeks, Calcu every 3 days. The most recent releases landed on September 3, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | Graph³ | Calcu |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calcu-logarithm/id6698852208/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | Paid | **Free** |
| Size | 10 MB | 3 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Norbert Grieger](https://appshunter.io/developer/1437060665) | [Yuri Morozov](https://appshunter.io/developer/1582368813) |

## What reviewers say

### Graph³

[App page](https://appshunter.io/ios/app/graph/id1437807952)

Visualize mathematical functions in 2D and 3D with over 24 built-in functions. Automatically detect special points, customize settings for each function, and save your work. Ideal for students and math enthusiasts.

**Highlights:** 2D and 3D function display, Over 24 mathematical functions, Automatic detection of special points, Customizable function settings, Save and load scenes, Value table for function analysis

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3D Graph | $0.99 | one-time |


### Calcu

[App page](https://appshunter.io/ios/app/calcu-logarithm/id6698852208)

This app provides advanced logarithmic calculations and explanations, covering equation solving, Taylor series, digit-by-digit computation, and integral definitions. It also simplifies expressions, solves complex logarithmic equations, and includes a virtual slide rule.

**Highlights:** Solves logarithmic equations for y, x, and a, Explains Taylor series for log_e(x), Illustrates digit-by-digit log_10(x) computation, Explains log_e definition via integrals, Simplifies logarithmic expressions, Calculates and graphs complex logarithms, Includes virtual slide rule

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Graph³ free?

Graph³ costs $0.99, and also offers in-app purchases.

### Is Calcu free?

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

### Do Graph³ or Calcu have ads?

Neither Graph³ nor Calcu shows ads.

### Which is updated more often, Graph³ or Calcu?

Graph³ ships an update every 3 weeks, and Calcu every 3 days. Most recently, Graph³ was updated on September 3, 2026 and Calcu on June 8, 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.*