# Epicycles vs Calcu

Epicycles and Calcu are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Epicycles against 5.0 for Calcu. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Epicycles ships an update every 5 days, Calcu every 3 days. The most recent releases landed on June 5, 2026 and June 8, 2026 respectively.

## The numbers

| Metric | Epicycles | Calcu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/epicycles/id6450433959/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/calcu-logarithm/id6698852208/reviews) |
| Number of ratings | **2** | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 days | **Every 3 days** |
| Monetization | Free | Free |
| Size | 4 MB | 3 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Limit Point Software](https://appshunter.io/developer/377981570) | [Yuri Morozov](https://appshunter.io/developer/1582368813) |

## What reviewers say

### Epicycles

[App page](https://appshunter.io/ios/app/epicycles/id6450433959)

Explore the visualization of complex Fourier series through interactive epicycles. Create and analyze approximations of parametric curves and complex functions. Save animations and export custom terms for later use.

**Highlights:** Visualize Fourier series of 2D functions, Create epicycles from drawn curves, Save custom terms to documents, Export animations as GIFs, Adjust time and number of terms, Interactive graphic elements

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Epicycles free?

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

### Is Calcu free?

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

### Which has better reviews, Epicycles or Calcu?

Epicycles and Calcu are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Epicycles or Calcu have ads?

Neither Epicycles nor Calcu shows ads.

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

Epicycles ships an update every 5 days, and Calcu every 3 days. Most recently, Epicycles was updated on June 5, 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.*