A simple tool for building stories.
About this app
Please join our Discord to report issues! https://discord.gg/GTmgjZcupk
Multi-platform
This app is where ever you are. Your phone, tablet, desktop, laptop, this program can be installed and run, not simply a website-in-a-box, but instead using native client side technologies to provide the best experience possible.
Offline first
I was frustrated with most of the story writing software I was finding as they were using web technologies (aka: Web Page in a box) which always seems to run into problems while being used offline for long periods of time. Hammer is designed from the ground up to be entirely local, no internet connection required, ever.
Transparent Data
Your data is yours. It's not stored in the cloud, or some opaque database. It is stored in simple, human readable files, just using files and folders to define the project structure. You can open your OSes file browser and take a look for your self. If this program went away today you would be able to easily interact with your data.
Intelligent Syncing between devices
Your data can be synchronized between devices allowing you to work on your story from anywhere, and have no fear of a change on one device, overwriting a change on another device.
Optional and Self hosted Syncing
Syncing is entirely optional, you can install the client and use it on one device, or you can install the server and sync your data between devices.
Licensed under MIT, by Adam Brown.
What's New in v3.6.1
Imported from the F-Droid repository index.
- - [New] Re-added translations
- - [New] iOS can now export logs
- - [Fix] Encyclopedia image selection
- - [Fix] Focus mode UI padding on Desktop
Version history
Jul 15, 2026 · 14.3 MB · Android API 28–37 · code 306020000
Imported from the F-Droid repository index.
- - [New] Re-added translations
- - [New] iOS can now export logs
- - [Fix] Encyclopedia image selection
- - [Fix] Focus mode UI padding on Desktop
SHA-256 8aa3cb4f0a4c5d219a03174898347c2904d3531bb425556470dd174a1f51aa8c
Jul 10, 2026 · 14.4 MB · Android API 28–37 · code 306010000
Imported from the F-Droid repository index.
- [New]
- - Ideas: capture ideas for new stories
- - Project Tags: tag your projects and filter the project list by tag
- - "Move To" dialog for moving a scene to an exact spot
- [Improve]
- - Writing activity reliability improvements
SHA-256 63103ca51ea1e98a3482abe2fac90678d4d17c77a6e525bc7d802450f2fb7291
Jul 2, 2026 · 14.1 MB · Android API 28–37 · code 305040000
Imported from the F-Droid repository index.
- - [Fix] Several sync protocol bugs
- - [Fix] Spellcheck not respecting disable setting
SHA-256 ae1226e77c47f282cc863b81b92d0da987ece5de2d22e80c6b0a2d9e738d4b35
Will it run on your device?
74%
- Targets newer Android builds, so legacy devices may be excluded.
- 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 com.darkrockstudios.apps.hammer.android 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, 3.6.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Hammer 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 Hammer, and a listing is removed when the evidence for it stops holding up.
Get Hammer
Every source we list for com.darkrockstudios.apps.hammer.android 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
8aa3cb4f0a4c5d219a03174898347c2904d3531bb425556470dd174a1f51aa8c
Signing certificate
bc937a21521595d1246f5ba3041547a9214ee8c87ceb27b0666ee5442c06bae5
Permissions Required
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.
Report a problem with this listing
A listing is only as good as its corrections. If a source is broken, a signature looks wrong, or this app should not be here, tell the moderation team.