# Caesium Studio

> An indie app development studio, publishing 10+ mobile and desktop apps with millions of downloads across iOS, Android, Linux, Windows, and macOS.

## About

Caesium Studio is founded in Berlin. The studio builds music, education, and utility apps, a smart eBook reader (csBooks), and an app marketing SaaS platform (Apporb).

Contact: caesiumstudio@outlook.com

## Products

- [csBooks — Smart eBook Reader](/csbooks): Desktop eBook reader for Linux, Windows, macOS. Supports ePUB, MOBI, PDF, DJVU, and comic books. Features collections, dark mode, annotations, and Librivox integration.
- [Apporb — Grow Your App](/apporb-grow-your-app): Browser-based SaaS for app marketing and publishing automation. Features translation management, screenshot generation, push notifications, review management, and icon generation.
- [Mobile Apps](/): 10+ published Android/iOS apps including Harmonium, Tabla, Piano, Flitm, Audiowise, Drive, Jal Tarang, Harmonium Lite, Raga Melody, and Expense Tracker & Calculator.
- [A Million Download App](/a-million-download-app): Book by Ravi Sharma covering the 4 pillars of app success — Idea, Development, Monetization, and Marketing.

## Pages

- [Home](/): Featured app hero, studio stats, mobile apps grid.
- [csBooks](/csbooks): Product page with features, screenshots, and download links for desktop and mobile.
- [Apporb](/apporb-grow-your-app): SaaS platform showcase with 8 key features.
- [A Million Download App](/a-million-download-app): Book landing page with chapter overview, Amazon link, and newsletter.
- [Privacy Policy](/privacy-policy): Available in English, Hindi, and German.
- [Delete My Data](/delete-my-data): Data deletion instructions for csBooks users.
- [Terms & Conditions](/eula/license): EULA and licensing.
- [App Details](/app-details/[appid]): Dynamic pages for each app with screenshots, videos, and download links.

## Mobile Apps

- **Flitm - be curious**: Programming learning app (HTML, CSS, JS, Java, Python). 500k+ downloads.
- **Harmonium - Real Sounds**: Indian classical harmonium simulator. 500k+ downloads.
- **Drive - Traffic Signs & Car Controls**: German driving license prep. 400+ vocabulary words, 260+ traffic signs. 500k+ downloads.
- **Audiowise**: YouTube to MP3 converter, podcast and audiobook manager. 500k+ downloads.
- **Jal Tarang**: Indian percussion instrument simulator. 500k+ downloads.
- **Tabla**: Indian classical drums with 9 Taals, audio recording, loops. 500k+ downloads.
- **Harmonium Lite**: Lite version of the Harmonium app. 500k+ downloads.
- **Piano - Real Sounds Keyboard**: 88-key grand piano with 7 octaves, dual mode, metronome. 500k+ downloads.
- **Raga Melody**: Indian classical music (Hindustani & Carnatic) with ragas and practice videos. 500k+ downloads.
- **Expense Tracker & Calculator**: Compound interest calculator with graphs.

## Tech Stack

Built with Nuxt 4 (Vue 3), Tailwind CSS, Pinia for state management. Deployed on Firebase Hosting as a statically generated site.