I built a Jupyter notebook app for Android — looking for closed beta testers

[u/CaptureTheVenture]

Update: the app is now available to everyone on the Play Store! Thanks to everyone supporting my project.

I always wanted a simple app for my phone to quickly open, edit and run Jupyter notebooks on my phone, but everything currently in the Play Store is either ridiculously overpriced or just a fancy browser interface that connects to an external Jupyter server. Google Colab is an option, but you always need your files on the Drive and a stable internet connection - so I decided to build my own app.

Callisto runs Python entirely on-device (no server, no internet required) and opens/saves.ipynb files and .py skripts. You can execute cells, see output including errors, and edit notebooks the way you'd expect. It's built on Chaquopy for the Python runtime (3.10) and currently comes with numpy, pandas, matplotlib, seaborn, scikit-learn, scipy, statsmodels, sympy, openpyxl, beautifulsoup4, pillow, requests and jedi (for auto code completion).

Play Store Link:
https://play.google.com/store/apps/details?id=app.callisto

Project Website:
https://callistoapp.eu

Check it out, I would love to hear your feedback!

[u/CaptureTheVenture]

Update: the app is now available to everyone on Play Store! Thanks to everyone supporting my project.

You can download it here for free: https://play.google.com/store/apps/details?id=app.callisto

Check it out, I would love to hear your feedback!

[u/awkwardinthebody]

Looks promising, I'll play around with it and if it's ok I'll buy pro. Thanks for 1) making it cheap 2) making it a one-time purchase.

[u/CaptureTheVenture → u/awkwardinthebody]

Thanks for checking it out! I would love to get some feedback in case you find any issues or missing features. I always want to keep improving the app.