Speed-reading app that shows one word at a time with adjustable timing
About this app
Stutter is a speed-reading app that uses RSVP (rapid serial visual presentation) to show one word at a time in a fixed spot. This reduces eye movement and keeps your pace steady.
Paste text, share text from another app, or send a public article URL to extract readable content. Reading speed and timing are fully adjustable, including delays for long words, punctuation, numbers, and short words so the rhythm feels natural and predictable.
Features: - Language-aware tokenization and hyphenation for long words (18 supported languages). - Appearance controls for fonts, size, spacing, and colors. - Optional flankers to preview the next word fragment. - No analytics, no tracking, no data collection, and no reading history.
Licensed under GPL-3.0-only, by James Tomasino.
What's New in v1.4.3
Imported from the F-Droid repository index.
- - Add an option to dim the surrounding UI during active playback without changing the RSVP text.
- - Make automated light/dark screenshots use a deterministic theme to avoid mixed-mode captures.
Version history
Mar 16, 2026 · 18.3 MB · Android API 24–35 · code 29
Imported from the F-Droid repository index.
- - Add an option to dim the surrounding UI during active playback without changing the RSVP text.
- - Make automated light/dark screenshots use a deterministic theme to avoid mixed-mode captures.
SHA-256 56d6270b551a260b3e6bfa5a50b0c0cf7abaa096401c1bb9dcb8c83409eddde6
Mar 10, 2026 · 18.3 MB · Android API 24–35 · code 26
Imported from the F-Droid repository index.
- - Add paragraph-aware pacing with a new paragraph delay setting.
- - Show paragraph markers on the playback progress scrubber.
- - Add fast scrub seek control and +/- 25 WPM step buttons.
- - Preserve paragraph boundaries better when reading shared URLs.
SHA-256 735e6af7c5e1024eb4fb4296aa28085c6cc783c5eefb1ce95ce8dd2fb364d31d
Mar 5, 2026 · 18.3 MB · Android API 24–35 · code 25
Imported from the F-Droid repository index.
- - Move Play/F-Droid listing metadata to fastlane/metadata/android.
- - Update screenshot and release docs/scripts to use the fastlane metadata path.
SHA-256 badc7065081bed178315f6b1ad17d7b7a533c9929971c82db18d76db143ff035
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.tomasino.stutter is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.4.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Stutter first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Stutter, and a listing is removed when the evidence for it stops holding up.
Get Stutter
Every source we list for org.tomasino.stutter is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
56d6270b551a260b3e6bfa5a50b0c0cf7abaa096401c1bb9dcb8c83409eddde6
Signing certificate
2d8755472efcfb3c11649070205d47e66461a30c8f7949f2dac24251f76793df
Permissions Required
What each permission lets Stutter do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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