Clean apps. Useful tools. Premium mobile experience.
AS Studio Jo builds Android applications focused on modern design, smooth performance, simple workflows, and practical features for daily use, learning, engineering, productivity, media, PDF, and utility tasks.
Our Applications
Current and upcoming Android applications developed by AS Studio Jo.
AS Scientific Calculator
A premium scientific calculator with advanced math functions, equation solver, system solver, engineering conversions, scientific constants, matrix tools, calculation history, banner ads, and optional Remove Ads through Google Play Billing.
PDF Image Converter
Convert PDF pages into images and create PDF files from selected images with a clean mobile workflow.
AS MKV Audio Fixer
A media utility focused on fixing and preparing MKV audio tracks for better playback compatibility.
Subtitle Merger
A practical tool for subtitle and video workflows, designed for simple and clean mobile use.
MathPro 300 Calculator
A focused calculator experience inspired by classic scientific calculators for students and daily math use.
More AS Studio Jo Apps
More Android utilities are planned with a focus on useful features, clean design, and a professional user experience.
Privacy Policy
Last updated: July 2026
This Privacy Policy applies to Android applications published by AS Studio Jo, including AS Scientific Calculator and future AS Studio Jo apps.
Information Collection
AS Studio Jo apps are designed to request only the permissions needed for their features. Some apps may store settings, preferences, selected file paths, or usage history locally on the user's device. Local data is not uploaded to AS Studio Jo servers unless clearly stated inside a specific app.
Local Data
Some apps may save local history, selected files, preferences, or app settings to improve the user experience. Users can usually clear this data from inside the app, by clearing app data from Android settings, or by uninstalling the app.
Ads
Some AS Studio Jo apps may use Google AdMob to display ads. Google AdMob may collect and process data such as device identifiers, advertising ID, approximate location, app interactions, diagnostics, and ad performance data according to Google's policies.
In-App Purchases
Some apps may offer optional in-app purchases, such as Remove Ads, through Google Play Billing. Purchase processing is handled by Google Play. AS Studio Jo does not collect or store payment card details.
Files and Media
Apps that work with PDF, images, videos, audio, or subtitles may ask users to select files from their device. These files are used only to perform the requested app function. AS Studio Jo does not upload user files to AS Studio Jo servers unless a specific app clearly states that an online service is being used.
Data Sharing
AS Studio Jo does not sell user data. Data may be processed by third-party services used in the apps, including Google AdMob and Google Play Billing, where required to provide ads, purchases, diagnostics, analytics, or app functionality.
Children
AS Studio Jo apps are intended for general audiences unless a specific app states otherwise. AS Studio Jo does not knowingly collect personal information from children.
Contact
For privacy questions, contact AS Studio Jo at:
AS.Studio.Jo@gmail.com
Contact
Developer: AS Studio Jo
Email: AS.Studio.Jo@gmail.com
AS Scientific Calculator: View on Google Play
App ads verification: app-ads.txt