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Android Apps > Education > Calvora: Master every number
App profile & analytics · Education · Data updated 2026-10-24
Calvora: Master every number icon

Calvora: Master every number

by Stackova Labs · Free · Version 1.0.3

“Train your brain with math quizzes, tables, duels, and daily challenges.” the developer's tagline

Availability On Google Play since September 2026 ↗
Rating on Google Play
–
Rating
–
0 reviews
Total installs
1
Installs, last 30 days
2
Best rank
–
not in the top lists
Last updated
September 21, 2026
1.0.3
AppBrain's verdict NewNiche

Calvora: Master every number came out 46 days ago. It is a niche app, with 1 installs. It doesn't have enough ratings yet to judge what users think.

Calvora: Master every number is made and published by Stackova Labs. AppBrain is an independent app data site and isn't affiliated with Stackova Labs. The app name, icon, screenshots and description belong to Stackova Labs and are shown as published on Google Play.

About Calvora: Master every number

Calvora: Master every number is an education app developed by Stackova Labs.

How many times has Calvora: Master every number been installed?

Calvora: Master every number has been installed 1 times. In the last 30 days, the app was installed 2 times.

What is the rating of Calvora: Master every number?

Calvora: Master every number has no ratings yet.

Is Calvora: Master every number free?

Calvora: Master every number is free. The app size is 4.78 MB. The latest version available is 1.0.3. The last update was on September 21, 2026.

What are the requirements for Calvora: Master every number?

The app has a content rating of Everyone. The app has been available on Google Play since September 2026.

Description by Stackova Labs (from Google Play)
Calvora is a fast, focused mental math trainer from Stackova. Practice arithmetic until it feels automatic — then push into fractions, percentages, roots, and mixed operations.

WHAT YOU CAN PLAY
• Learn tables for addition, subtraction, multiplication, and division
• Multiple-choice quizzes with Easy, Medium, and Hard levels
• Input mode — type the answer yourself
• True / False lightning rounds
• Find the missing number
• Two-player Duel on one device
• Daily tests, review answers, and worksheet-style practice

DESIGNED TO STICK
• Clean, modern interface with night mode
• Choose your accent color
• Sound and vibration feedback
• Practice reminders so you do not lose the streak
• 11 languages, including English and Arabic

Calvora works offline for core practice. Optional ads help keep the app free. Replace the sample AdMob IDs in Play Console / strings before you publish with live ads.

Publisher: Stackova
Support: stackova7@gmail.com
Website: https://stackova.net
Privacy: https://stackova.net/p/calvora/privacy
Package: net.stackova.calvora

CATEGORY
Education

TAGS
math, mental math, quiz, brain training, arithmetic, tables, education, kids, students, practice

CONTENT RATING
Everyone — educational, no user-generated content, no chat

CONTACT
Email: stackova7@gmail.com
Website: https://stackova.net

Recent changes:
Train your brain with math quizzes, tables, duels, and daily challenges.
Show more Show less

More data about Calvora: Master every number

Price Free
Total installs 1
Recent installs 2
Rating No ratings
Ranking Not ranked
Version 1.0.3
App size 4.78 MB
Number of libraries ?
Suitable for Everyone
Ads Contains ads

App Performance Report

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Screenshots

Calvora: Master every number Screenshot 1 of 7
Calvora: Master every number Screenshot 2 of 7
Calvora: Master every number Screenshot 3 of 7
Calvora: Master every number Screenshot 4 of 7
Calvora: Master every number Screenshot 5 of 7
Calvora: Master every number Screenshot 6 of 7
Calvora: Master every number Screenshot 7 of 7
Screenshots by Stackova Labs, from the Google Play listing
Official page on Google Play

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Changelog of Calvora: Master every number

Show changelog

Developer information for Stackova Labs

Stackova Labs

stackova8@gmail.com

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Comments on Calvora: Master every number for Android

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Google Play Rankings for Calvora: Master every number

This app is not ranked

Technologies used by Calvora: Master every number

13 permissions
Subscribe to see full permission and library details

Frequently asked questions about Calvora: Master every number

Is Calvora: Master every number free?

Yes. Calvora: Master every number is free on Google Play.

Is Calvora: Master every number still available?

Yes. Calvora: Master every number is on Google Play, and the last update we saw was on September 21, 2026.

Does Calvora: Master every number contain ads?

Yes. Google Play lists Calvora: Master every number as containing ads.

How large is Calvora: Master every number?

Calvora: Master every number is 4.78 MB.

Is Calvora: Master every number suitable for children?

Google Play rates the content of Calvora: Master every number as suitable for everyone.

How many times has Calvora: Master every number been installed?

Google Play lists 1+ installs for Calvora: Master every number.

Who made Calvora: Master every number?

Calvora: Master every number was developed by Stackova Labs. It is listed in the education category on Google Play.

What are the best alternatives to Calvora: Master every number?

People looking at Calvora: Master every number also look at these education apps: Maths Tables 1 - 100 with Test, Math Workout: Brain Math Games, Math Facts, Math Challenges : Math Games, Math Quiz Pro - Brain Game.

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