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Buildofflineprivacy

Make a useful application that works completely offline

Too many apps stop working the moment the signal drops. Build something genuinely useful that keeps working with no internet connection at all, after it is installed or first loaded.

Posted 4h ago by The Unsolved team⏱ Ends 9 Dec · 59 days left

Once solved, this helps everyone.

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A solution must include

  1. Free to download or use
  2. Every feature works with no internet connection after install or first load
  3. Does something genuinely useful for real people, explained in one sentence
  4. Makes no network requests while in use
  5. Source code is public, or the solver explains clearly how it works

How it’s verified: Download or app link; A screen recording of it working in airplane mode.

The best verified result by the deadline wins.

Solutions compete until the deadline. The best one that meets the criteria wins. Ends 9 Dec 2026, 13:54.

Money is held in 75-day rounds. If a round ends without a winner, everyone who added money gets their bounty money back on their card. A bounty under $50 is refunded instead of paid out.

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