Small products that do one job well.
Sovereign HQ is a one-person studio. These are the tools, apps, games and books it makes.
Tools & bots
3 products- Haggler Shuki, a Telegram agent that turns a few photos into a ready second-hand listing, prices it and handles the haggling. Live
- Chiptune Composer Make retro 8-bit game music without knowing music theory: pick a mood and a length, get a loopable track, download the WAV. Live
- Shortlist Upload a list of businesses and get back the ones worth contacting, each with the reason why. In development
Apps
6 products- Nightjar A sleep tracker and alarm for Android that records what happens in your room overnight, and only switches off once you've walked to a spot you chose. Live
- RiffLoop A practice player for learning guitar solos: loop a few bars, slow them down without changing the pitch, and play along. Free, in your browser. Live
- fitflow A food and gym log for Android: meals with calories and macros, sets with personal records, and progress toward your weight goal. Live
- Ringtone Maker Turn any recording on your phone, a voice note, your kid laughing, a song you played, into a ringtone. Free, in your browser. Live
- Riff Expander Record a few seconds of a riff and get a full-length track built from it: drums, bass and chords in your key. Free and open source. Live
- Lantern A language partner you talk to out loud. It keeps the conversation going and corrects you gently as you speak. In development
Games
5 products- Tetherbound A top-down creature-collecting RPG with real-time battles, where you can swap between trainer and creature mid-fight. In development
- Times Tables Ladder A free times tables game for kids: climb the ladder 10, 2, 5, 4, 3, 9, 6, 8, 7, earn stars, and see why every answer is right. Live
- Number Facts Ladder A free addition game for kids: addition and subtraction to 20 in six strategies instead of 400 facts to memorise. Climb the ladder, earn stars. Live
- Four in a Row A free Connect 4–style game: play the computer, solve puzzles, and learn why a move wins. No ads, no account. Live
- Free Backgammon Free backgammon in your browser: play the computer or a friend on the same device, with a coach that shows the better move. No ads, no gambling. Live
Books
3 products- Letter Reversal Workbooks Printed workbooks for kids who mix up b and d, p and q: short visual games that train the eye to tell them apart. Live
- Aphasia & Memory Workbooks Large-print practice books for adults relearning words after a stroke or brain injury, and gentle activities for people living with memory loss. Live
- The Ladder Books Math and physics explained in the order that actually works: times tables, number facts, forces and motion, one rung at a time. Live
Need something built?
Besides its own products, Sovereign HQ builds custom software for businesses: bots, internal tools, dashboards and automations. Tell us what you need and we'll get back to you within a few business days.