Peanoware

Play with this app and build some proofs in natural deduction style. Clicking on a formula automatically expands it with possible…

As of May 2026, Peanoware has — users.

Chrome Web Store ↗.crx

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Version

1.4

Manifest V2

History

1 snapshots

Tracking since Apr 24, 2026.

Not enough history yet for this metric — the chart fills in as we collect more snapshots.

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Date	Users	Rating	Reviews	Version
Apr 24, 2026	—	—	—	1.4
Now	—	—	—	1.4

Permissions & access

Permissions: alarmsunlimitedStoragenotificationsstorageclipboardReadaccessibilityFeatures.readclipboardWrite
Host access: https://clients2.google.com/

Screenshots

About

Play with this app and build some proofs in natural deduction style.
Clicking on a formula automatically expands it with possible rules.
Assumptions are printed in blue. Selected one of them generates a new subtree.
Attaching two trees is done by dragging the root of the first one to the leaf of the second one.
If there only one possibility, this attachment is performed automatically.
The proof is done when the tree is surrounded by a red rectangle.

Have fun! Logic is fun