NumSys

Name: NumSys
Rating: 4.882353 (537 reviews)
Author: Sandello

By: Sandello

Number Systems Converter and Calculator with solution.

Features & Capabilities

NumSys is a simple and intuitive Chrome extension designed for converting and calculating across various number systems ranging from base 2 to base 36. It supports seamless conversion including decimal fractions, allowing users to easily switch between numeral bases. Beyond conversions, NumSys enables mathematical operations like addition, subtraction, multiplication, and division within different number systems, providing complete solutions for each calculation.

Ideal for students, educators, programmers, and anyone working with diverse numeral systems, NumSys streamlines complex computations with accuracy and efficiency. The extension also encourages community contributions through its GitHub repository, making it an evolving tool for all users needing reliable number system conversions and calculations.

User Growth & Download Statistics

App Education Developer Tools

By:

Downloads:

Rating:

Version:

2.5.0 Last updated: 2026-05-19

Version code:

150

Creation date:

2016-01-16

Publisher country:

Permissions:

com.google.android.gms.permission.AD_ID Moderate risk
android.permission.ACCESS_ADSERVICES_AD_ID Low risk
android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
android.permission.INTERNET Low risk
android.permission.WAKE_LOCK Low risk
com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE Low risk
android.permission.ACCESS_NETWORK_STATE Safe
com.android.vending.CHECK_LICENSE Safe
ru.sandello.binaryconverter.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Size:

5.86MB

Email:

sa*****@yandex.ru

URLs:

Website ,Privacy policy

Full description:

Source:

Google Play Store

Data ingested on:

2026-06-08

Compare stats and ranking:

Ranking

# 170,657 ▼ 514

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Sandello

Google Play Store

https://play.google.com/store/apps/details?id=ru.sandello.binaryconverter

Email:

sa*****@yandex.ru

Website:

http://sandello.ru/

User Reviews

NumSys is praised for its modern, straightforward design, ad-free experience, and detailed explanations aiding learning of number systems. It is especially valued by students for converting various number bases effectively. However, users report app crashes when bases are changed without resetting results and a buggy input issue duplicating characters. Some request additional features like support for non-positional systems and enhanced explanation content. Data usage on app launch is a concern, and a few users suggest replacing optional ads with a donation model.

Pros

User-friendly and straightforward interface with a modern look.
Provides detailed explanations for calculations which help in learning.
No advertisements, making the app experience uninterrupted and pleasant.
Useful for students and anyone interested in number systems as a learning tool.
Reliable and effective in converting various number bases.

Cons

App crashes when the results are not reset before changing the base.
Input issue where typing hexadecimal values like 'A5' results in incorrect duplication such as 'AA5'.
Consumes 5-6MB of data each time it is opened without clear reason.
Feature requests for support of non-positional number systems like Gray code, Excess-3, and BCD.
Some users desire more detailed explanations and an option to donate instead of ads.