6-1 Studios · Independent app development
Small apps.
Built to
last.
An independent studio making focused Android apps that do one job properly — a comic reader for the library you already own, and a training log for the gym machines you already use.
The lineup
Longbox
A fast, modern Android reader for your self-hosted Komga comic and manga library — with on-device panel-by-panel guided view.
Simple Strength Tracker
An 8-week, percentage-based strength program built for gym machines, with automatic progression and no account needed.
Komga ShabbyFork
Upstream Komga plus a handful of server patches: watch-folder scanning, 7z comics, smarter reading-list import.
App / 001
Your Komga comics, beautifully read.
Longbox connects straight to your own Komga server and brings your comic and manga collection to your phone and tablet — browsing, offline downloads, reading lists and progress sync done right, plus guided view that steps through every page one panel at a time.
Full-size comics,
phone-size screen.
Guided view finds the panels on every page and walks you through them in reading order, left-to-right or right-to-left. Detection runs entirely on your device with a custom-trained model, works on any comic in your library, and is cached so each page is only analysed once. Don't like a layout? Fall back to the full page any time.
Guided panel view
On-device ML panel detection with smooth panel-to-panel motion, a page minimap and a full-page glimpse on every page turn.
Reading lists, in order
"Next" follows the reading list across different series, so crossovers and events read start to finish without hunting.
Offline & Smart Downloads
Download issues, series or whole lists. Smart Downloads keep the next unread issues ready, within a storage budget you set.
Progress that syncs
Reading position goes back to your Komga server, and survives being offline until you reconnect.
Made for reading
Fit page or trimmed fit, pinch zoom, right-to-left for manga, two-page spread handling, tap or swipe — your choice.
Your server, your data
Connects directly to Komga with encrypted credentials. Optional settings sync uses your own Google Drive — nothing on ours.
Longbox is a reader, not a store. It needs a Komga server that you host, and reads the comics you already own. Free with ads — a one-time purchase or a subscription removes them.
App / 002
Simple Strength
Tracker
Track. Progress. Repeat.
A structured strength program for commercial gym machines, not barbells. Follow an 8-week cycle of percentage-based main lifts and let the app work out every weight, round it to your machine's plate stack, and progress your accessories for you.
Programmed for you
Main lifts follow a weekly percentage of your 1RM. Week 8 tests a new max, which sets up the next cycle automatically.
Machine-friendly weights
Every weight is rounded to your plate size, and units are per exercise — kg, lbs, or just the number on the pin.
Auto progression
Hit every set and accessories go up a plate; miss them all and they deload. Manual changes are respected, never overwritten.
Program or free session
Run the cycle, or log a one-off free session. Switching is lossless and both share the same working weights.
Built-in rest timer
Current set, next set and rest countdown stay pinned on screen while the full workout scrolls underneath.
Assist machines too
Flag assisted pull-up or dip machines as inverted, and progression reduces the assistance instead of adding weight.
Open source
Komga ShabbyFork
Upstream Komga, plus a few things we needed.
Komga is the self-hosted media server for comics, manga, BDs and eBooks that Longbox reads from. ShabbyFork is every upstream release, unchanged, with our patches on top — rebuilt automatically when a new Komga version ships, and a drop-in replacement for the official jar.
$ gh release list -R ShabbyDog/komga fetching releases from GitHub… # same Komga, same data — swap the jar $ java -jar komga-<version>-ShabbyFork-build<n>.jar
Scan when files change
Watch a library folder and scan once a copy settles — new comics show up in a minute, not at the next six-hourly scan.
7z comic support
.cb7 and .7z archives are read like any other comic, and can be converted to CBZ.
Smarter CBL import
ComicRack reading lists match on series year and issue year, so same-named series and reboots resolve correctly.
Builds on Windows
Fixes the web UI translation loader so the whole project builds on Windows as well as Linux and macOS.
Numbered builds
Every build is tagged <version>-ShabbyFork-build<n> and shows it in the UI, so you always know what's running.
No surprises
Built only from tagged upstream releases — no unreleased upstream code — with every change documented.
Pairs well with Longbox
Run ShabbyFork on your server and Longbox on your phone for new issues that appear on their own and reading lists that import cleanly.
ShabbyFork is an independent, unofficial build. Komga is created by gotson and contributors under the MIT licence — please report fork-specific issues to our tracker, not upstream.
About the studio
Small studio.
No bloat.
6-1 Studios is a small, independent studio. Every app here started as something we wanted for ourselves — a better way to read our own comic collection, a simpler way to run a proper strength program on the machines at the gym — and got polished until it was good enough to share.
- Your data stays yoursNo accounts, no cloud of ours. Workouts stay on your phone; comics stay on your server.
- Offline firstEverything that can work without a connection does.
- Do one thing wellFocused tools, not platforms.
Questions, bug reports or feature ideas? We read everything.
developers@6-1.app