Motto Author + Reader · latest signed release

Your library.
Your keys. Your device.

Motto Native is two focused apps with one shared protocol. Publish encrypted chapters in Author, then unlock and read locally in Reader without a mottosoup account.

Two apps, one protocol

Choose your role and platform

Install Author to create and publish. Install Reader to discover, unlock, and read. Every package is authenticated by the current signed release manifest.

Show all platform downloads +
Arm64

Android

For 64-bit ARM Android devices. Direct installs use the signed APK; Play builds remain distributed through Google Play.

Chrome 150 may remove APK downloads after they reach 100%. Use Firefox if the downloaded APK disappears.

Motto Author

Motto Reader

x64

Windows

The installer includes the offline WebView2 runtime, so setup does not need to fetch it separately.

This direct installer is not Microsoft-signed. Windows may show a SmartScreen warning. Verify the signed checksums below before running it.
Advanced: verify a download checksums and signatures

Before you install

Verify the download

Download the checksum file, signature, and public key beside your packages. One signed release manifest authenticates every current Author and Reader build.

# Authenticate the release key against the pinned SPKI fingerprint

test "$(openssl pkey -pubin \
  -in motto-release-public.pem -outform DER \
  | sha256sum | cut -d' ' -f1)" = "79dc94598d18b3d803336c6534aa9226aab48316b2a32467c57c5d0858935105"

# Verify the signed manifest

openssl pkeyutl -verify -pubin \
  -inkey motto-release-public.pem \
  -rawin -in SHA256SUMS \
  -sigfile SHA256SUMS.sig

# Check file hashes

sha256sum --check --ignore-missing SHA256SUMS