Quadratic Reciprocity

Name: Quadratic Reciprocity
Author: Subramanian Mahadevan

LiveSubramanian Mahadevan2 apps · 209 installsEducationFreecom.realandcomplexsoftware.quadraticreciprocity

Explains Quadratic Reciprocity law, implements algorithm for quadratic residues

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Total installs: 20
Installs / day: 0
Rating: —★
Released: 23 Mar 2016
Last update: 18 Aug 2026
Countries: —

Install history

exact counter from Google Play

30dAll

Installs per day · last 90 days

Change timeline

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

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We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

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App manifest

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Data safety

declared by the developer on Google Play

No data shared with third parties
No data collected

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

2 in 1 group

0 Sensitive0 Notable2 Routine

OtherRoutine2

Access to miscellaneous device features that don't fit other categories

Connect to the internet to load content and send datafull network access · INTERNET
Make your phone vibratecontrol vibration · VIBRATE

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description

This app provides an introduction to quadratic residues leading up to the Quadratic Reciprocity law. It also implements an algorithm for determining quadratic residues using this law. Further, when this algorithm is run it provides a step-by-step explanation of the results. While a grasp of some advanced math is required to fully appreciate the quadratic reciprocity law, at one level it can be understood in terms of elementary number theory. Our goal is to make this exposition accessible to both levels of readers. The app makes use of Latex and MathJax to present the mathematics with standard notation, and uses the app's programming capabilities to implement the algorithm. It does not require an internet connection and works completely offline.

What's new

Updated the app to target Android 16 (API level 36).

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