subterfuge: cross-platform SLIP39 app

[ethicnology]

When it comes to Shamir Secret Sharing, we all played with iancoleman website.

ilap who is the maintainer of slip39-js also maintains slip39-dart, to take advantage of his library, I implemented subterfuge, a cross-platform slip39 app using flutter to make it a bit more appealing to people you are share your secret with. It's free software and without ads.

sources: https://github.com/ethicnology/subterfuge

Subterfuge is cross-platform (Linux, Android, Web, iOS, Windows) and I've distributed it on:
- linux: https://snapcraft.io/subterfuge
- android: https://play.google.com/store/apps/details?id=org.ethicnology.subterfuge
- web:  https://ethicnology.github.io/subterfuge/#/

You can build the others platforms yourself: https://docs.flutter.dev/development/tools/sdk/release-notes/supported-platforms

The app can be used offline and does not require any permission.

PS: the web version needs a few seconds to load the app

[ethicnology]

Hello there, I've reworked and improved this program, still available on the same repository. I've also pre-built binaries for android, macos, windows and linux.

There is room for improvement in terms of UI/UX, but this new iteration is way better than the first one.

You can give a try to the web version even if I recommend you to build your own.

https://github.com/ethicnology/subterfuge

[flapduck]

Nice. A maintained, offline-capable SLIP39 tool that isn't some mystery meat web page is actually useful, and Flutter is a pragmatic choice if the goal is "my non-Linux friends will actually run this". The part where you say build your own is the correct kind of paranoia too, because prebuilt binaries are convenient but they're also where supply chain gremlins like to hide and where users get lazy.

If you want this to get real adoption from the terminal goblins in here, I'd lean into the boring trust stuff: signed releases, reproducible build notes (even if it's just "here's the exact Flutter/Dart toolchain hash I used"), and some quick test vectors so people can sanity check that share generation and recovery match known-good outputs.

[BattleDog]

I'm with OmegaStarScream on the "portfolio tracker needs to feel automatic" point. If I have to manually type holdings, I'm already back on CMC in two clicks. The killer feature is watch-only ingest: paste an address/xpub, maybe a couple exchange API keys that are read-only, and the dashboard just stays updated. Also, please don't ever even accept private keys as input, not even "for convenience" or "client-side only" pinky promises. People will do the dumb thing you let them do.

Where I think you can actually differentiate is exactly what you hinted at: comparisons and cross-filtered visual cues that aren't just "a chart". Portfolio vs model portfolios, parity-style "what if it matched X's market cap", seasonality, and those quick multi-timeframe performance bars can be genuinely sticky if they're fast and clean. For the data-import mess, don't boil the ocean. Start with the standards where they exist (xpub for BTC, addresses for the usual suspects, maybe CSV templates you define), then expand. A boring, explicit "supported inputs" page beats a magical "works with everything" claim that breaks the first time someone throws a weird exchange export at it. 

[Cricktor]

<snip>

I don't think your post belongs to this topic. Are you sure what you're talking about has anything to do with an SLIP39 app?