Logical Sentences Logical Sentences v1.0.3

Download Logical Sentences

Having trouble in Propositional Logic? Especially in understanding and solving logical sentences? Now you have at your disposal an app to help you!

The Logical Sentences consists of a logical calculator capable to generate the truth table, get solving tips, generate the binary tree and analyze any sentence. The app has several visual features that facilitate understanding and visualizing resolution priorities in a sentence.

The following is a detailed description about the app's features:

- Truth Table
The Truth Table is used to determine the logical values of composite propositions, from the allocation of all possible logical values in atomic propositions.

- Resolution
Enter any numerical sentence and get solving tips.

- Show implicit parentheses
Implicit parentheses are those who were not informed when entering the sentence, but it is as if they were present to justify the natural connective precedence.
For example: in the sentence P→Q∧R, as the conjuction connective "∧" has higher priority than the implication connective "→", we can say that this sentence has a pair of implicit parentheses. If we display them, the sentence would look like this: P→(Q∧R).

- Highlight pairs of parentheses
It is possible to highlight each pair of parentheses in a different color, or even the entire content inside them. The colors are directly related to the priorities: stronger colors indicate higher priority. The colors used are (from strongest to weakest): red, orange, yellow, light yellow.

- View step by step resolution
See each of the steps that must be taken to resolve the sentence.

- Get the binary tree of the sentence
The binary tree is a data structure. In this case is used to graphically represent the sentence, identifying unambiguously the order in which the sub-sentences must be solved. Facilitating the understanding of connective precedence.

- Analyze the sentence
Learn about each of the sentence’s components (numbers, connectives or other symbols).

You will also have at your disposal a short content divided into the following topics:

- Syntax
Read a text about the syntax of logical sentences, containing information components of a sentence and how it should be written.

- Semantics
Check out a resume about semantic interpretation of logical sentences.

- Connectives
Get information about each connective along with examples.

- Operator precedence
See a table of easy understanding that display the operator precedence.


Each informed sentence is automatically calculated, wrong results may be returned.


Parental rating: 
Everyone (age 6 and over)
Default language: 
Supported languages: 
Afrikaans, Amharic, Arabic, Bulgarian, Catalan, Czech, Danish, German, Greek, Spanish, Persian, Finnish, French, Hindi, Croatian, Hungarian, Indonesian (legacy in code), Italian, Hebrew (legacy iw locale), Japanese, Korean, Lithuanian, Latvian, Norwegian Bokmål, Dutch, Polish, Portuguese, Romanian, Russian, Slovak, Slovenian, Serbian, Swedish, Swahili, Thai, Tagalog, Turkish, Ukrainian, Vietnamese, Zulu
Trial version: 
"In-App" billing: 
With advertisements: 
Logical Sentences
Logical Sentences
Logical Sentences
Logical Sentences
Logical Sentences
Logical Sentences


Requires Google Play and/or account: 
Requires third-party libraries: 
Requires 'rooted' device: 
Target Android version: 
Android 6.0
Minimum Android version: 
Android 4.1
Requires permissions: 
Access network state, Internet, Wake lock, com.google.android.c2dm.permission.RECEIVE

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