# Calcu-Logarithm — From Arithmetic to Calculus

> Advanced logarithmic calculator and educational tool for complex math concepts. (iPhone/iPad app by Yuri Morozov.)

- Source: https://appshunter.io/ios/app/calcu-logarithm/id6698852208 (this page in markdown: same URL + `.md`)
- Developer: [Yuri Morozov](https://appshunter.io/developer/1582368813)
- Category: Education, Reference
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.0 · 3 MB
- Languages: American English
- Released: 2024-09-20
- Data updated: 2026-06-08
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/calcu-logarithm/id6698852208/reviews.md

## What is Calcu?

Calcu-Logarithm performs calculations and helps user understand logarithms on advanced level:

1. Solves equation "y = log_a(x)” for “y”, “x”, and “a”, with relevant graphs.
2. Explains and illustrates how to compute log_e (x) from Taylor series.
3. Explains and illustrates how to compute log_10 (x) digit by digit (based on M.Goldberg algorithm).
4. Explains and provides proof of log_e definition as the integral of x inverse.
5. Simplifies logarithmic expressions and solves logarithmic equations with polynomials of up to 20th degree.
6. Includes virtual slide rule for multiplication and division.
7. Calculates, explains, and graphs logarithms of complex numbers.

Developers welcome any feedback, please write to us at graphmath@aol.com.

Please check out our other Math apps.

## Key features

- 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


## Frequently asked questions about Calcu

### What logarithmic equations can Calcu-Logarithm solve?

Calcu-Logarithm can solve equations of the form "y = log_a(x)" for any of the variables y, x, or a. It also simplifies logarithmic expressions and solves logarithmic equations involving polynomials up to the 20th degree.

### How does Calcu-Logarithm explain complex logarithmic concepts?

The app provides detailed explanations and illustrations for computing log_e(x) using Taylor series and log_10(x) digit by digit via the M.Goldberg algorithm. It also explains the definition of log_e as the integral of the inverse of x.

### Does Calcu-Logarithm support calculations with complex numbers?

Yes, Calcu-Logarithm is capable of calculating, explaining, and graphing logarithms of complex numbers, offering a comprehensive tool for advanced mathematical exploration.

### What is the learning methodology used by Calcu-Logarithm?

Calcu-Logarithm employs an illustrative and explanatory approach, breaking down complex logarithmic concepts into understandable steps. It uses graphical representations and algorithmic explanations to enhance user comprehension.

### How often is Calcu-Logarithm updated?

The app was last updated on December 13, 2025, indicating active development and support from the developers. This suggests users can expect ongoing improvements and bug fixes.

### What devices is Calcu-Logarithm available on?

Calcu-Logarithm is available for iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users who need advanced mathematical tools.

### What do users like most about Calcu-Logarithm?

Based on the single rating available, the app has received a perfect 5.0 stars, suggesting users find it highly effective and valuable for its intended purpose of advanced logarithmic calculations and education.

### Does Calcu-Logarithm have ads?

No, Calcu-Logarithm does not contain advertisements. The app is completely free and does not display any ads, providing an uninterrupted learning and calculation experience.

## Version history (last 5 releases)

### 5.9 — 2025-12-13

Link to our new statistical app, Discrete Probability (Calculator, Proofs, Graphs).

### 5.8.1 — 2025-09-15

Bug fix

### 5.8 — 2025-04-26

Link to our new app, 'Math Editor', which is a tool to create Math notes, posters and presentations.

### 5.7 — 2025-04-04

Fixed an issue with e-mail not sending from "About / Contact us" section.

### 5.6 — 2025-04-03

Bug fix

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## More apps by Yuri Morozov

- [GraphMath](https://appshunter.io/ios/app/graphmath/id1582680101)
- [Vectors and Planes](https://appshunter.io/ios/app/vectors-and-planes/id1605294727)
- [Matrix Solver Step by Step](https://appshunter.io/ios/app/matrix-solver-step-by-step/id1623894950)
- [Polynomials and Linear Systems](https://appshunter.io/ios/app/polynomials-and-linear-systems/id1642007937)
- [Least Squares Curve Fit](https://appshunter.io/ios/app/least-squares-curve-fit/id6443509668)
- [Drawing with Math](https://appshunter.io/ios/app/drawing-with-math/id6479322887)

All apps by Yuri Morozov: https://appshunter.io/developer/1582368813

## Related topics

[logarithms](https://appshunter.io/ios/topics/logarithms) · [slide rule](https://appshunter.io/ios/topics/slide-rule)

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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 2026-06-08.*