# Simple Logarithm PRO — With Solution Steps

> Educational tool for logarithm and exponentiation calculations with detailed steps. (iPhone/iPad app by Glindemann, Sennoun, Langer GbR.)

- Source: https://appshunter.io/ios/app/simple-logarithm-pro/id1662897702 (this page in markdown: same URL + `.md`)
- Developer: [Glindemann, Sennoun, Langer GbR](https://appshunter.io/developer/1024972809)
- Category: Education, Utilities
- Price: $1.99
- Age rating: 4+
- Requires: iOS 15.0 · 180 MB
- Languages: American English, French (France), German (Germany), Hindi, Indonesian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China) and 1 more
- Released: 2023-01-29
- Data updated: 2026-08-20
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/simple-logarithm-pro/id1662897702/reviews.md

## What is Simple Logarithm PRO?

Using logarithm is a complicated task, but this app helps out! You can choose between 4 standard shapes of this topic. Then you can enter what you have to calculate what you need - base, exponent, antilogarithm, the logarithmic result, even the x-value of a term as exponent.  The connection between logarithm and exponentiation is shown aswell. An infographic gives a deeper insight into some calculation rules of the logarithm.

Decimals, fractions and negative values are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared.

[ Contents ]
- modes for logarithm
- modes for exponentiation
- exponent, base and some more values can be entered
- results are calculated and shown in detail
- transformations between logarithm and exponentiation are taken into account
- shortened list of logarithm rules
- history function to save the input
- detailed solution
- negative values, decimal numbers and fractions are supported
- no ads!

[ Usage ]
- there are fields for entering values using a special keyboard
- press the check mark button at the bottom right to start the calculation
- if values are missing, the relevant field is highlighted in yellow
- if the values are wrong, the affected field will be highlighted in red
- the entries in the history can be deleted or sorted
- if you select an entry in the history, it will be automatically loaded for the calculation
- the whole history can be deleted by pressing a button
- solutions can be shared
- touching the question mark button displays information about the topic

## Key features

- Logarithm and exponentiation modes
- Step-by-step solution display
- Support for decimals, fractions, and negative values
- Calculation history
- Transformation between logarithm and exponentiation
- Logarithm rules infographic
- Solution sharing

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/simple-logarithm-pro/id1662897702/reviews.md

### 1/5 — なぜ背景に黄色を使う？

*2026-06-05*

全く見えない！
なぜ目に優しい配色にしない！
なぜ色や背景の設定、文字の大きさを工夫しない！

**Developer response:** こんにちは みーこばば 様、フィードバックをいただきありがとうございます。

まず初めに、ご不便をおかけしてしまったことをお詫び申し上げます。

このデザインは Apple の Human Guidelines に基づいて構築されており、Apple が推奨する標準的なビジュアル要素を使用しています。また、配色の構成は Google の Material Design の考え方を参考にしています。ただし、最終的な色の選択そのものは私自身が行っています。

私は多くの数学テーマを扱っており、それぞれを色で区別しています。黄色は累乗計算と対数のテーマグループを表しています。ドイツの文化的な感覚では受け入れられる選択でしたが、日本ではこの色の選択が不快感につながったのであれば申し訳なく思います。

私はこのご意見を技術的な問題として調査したいと考えています。もし可能であれば、どの端末とどの OS で視認性に問題があったか教えていただけると非常に助かります。

コンテンツが小さいという点については、上部にある数式選択部分を指しているのではないかと考えています。ただ、上部で選択した数式は画面中央にも大きく表示されるようになっており、読みやすさを確保しています。小さな情報についても改めて強調表示されるため、情報が失われないようにしています。

また、このアプリはダークモードにも対応しています。個人的にはこちらもおすすめです。

さらに、もしこのアプリがどうしても利用しづらい場合には、返金制度をご利用いただくことも可能です。  
https://support.apple.com/ja-jp/118223

いただいたご意見はリストに追加し、今後確認・検討させていただきます。

よろしくお願いいたします。  
Alex (the Dev)

## Frequently asked questions about Simple Logarithm PRO

### What types of logarithm calculations does Simple Logarithm PRO support?

Simple Logarithm PRO supports 4 standard logarithm modes and exponentiation modes. You can input base, exponent, antilogarithm, or the logarithmic result, and it will calculate the missing values.

### Does Simple Logarithm PRO show how to solve problems?

Yes, Simple Logarithm PRO displays the solution step by step, making it easier to understand the calculation process. It also shows the connection between logarithm and exponentiation.

### Can I use fractions and negative numbers in Simple Logarithm PRO?

Absolutely. Simple Logarithm PRO supports decimals, fractions, and negative values for all calculations. Missing or incorrect values are clearly highlighted.

### Does Simple Logarithm PRO have ads?

No, Simple Logarithm PRO is ad-free, providing an uninterrupted learning and calculation experience.

### How does Simple Logarithm PRO handle past calculations?

All calculations are stored in a history function, allowing you to easily access, delete, or sort previous entries. Selecting a history entry automatically loads it for further calculation.

### What devices is Simple Logarithm PRO available on?

Simple Logarithm PRO is available for iPhone, iPad, and iPod. It is designed for iOS devices.

### How often is Simple Logarithm PRO updated?

The app was last updated on June 19, 2026, indicating ongoing development and support. The current version is 2.2.0.

### What is the price of Simple Logarithm PRO?

Simple Logarithm PRO is a paid application, available for $1.99. This one-time purchase grants access to all its features.

## Version history (last 5 releases)

### 2.2.3 — 2026-08-14

The latest release 'Least common multiple' is linked in the menu section now.

Minor performance and UI fixes.

### 2.2.2 — 2026-08-04

- the status bar on top is integrated into the current app design
- the app flow was improved (pop-up information was balanced)

### 2.2.1 — 2026-07-17

Maintenance update. Improving performance.

### 2.2.0 — 2026-06-19

Bringing all apps to the same security standard. Critical storage behaviour for solutions has been fixed.

By the way - I run many apps with different math topics. If you like this one: Check them out as well!

I always do my best to keep a high standard on my apps. If something does not meet the expectations, do not hesitate to contact me.

### 2.1.9 — 2026-06-06

There were some major fixes and adjustments for a more stable behaviour of the solution storage and loading. Therefore some database changes were made in the background. There are no performance losses and the functionality does not change. The background tasks are only done once within milliseconds. Following behaviour may occur (only temporary):
- stored calculations have to be tapped twice to load fully
- the order of the stored solutions may change

If there are some losses of solutions do not hesitate to contact me and tell me the number of lost solutions + affected app. I will find a solution for this.

Kind regards, Alex (the Dev)

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All apps by Glindemann, Sennoun, Langer GbR: https://appshunter.io/developer/1024972809

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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 2026-08-20.*