Blog
Notes on how our privacy-first, on-device tools actually work.
18 July 2026 · Music
A thousand pieces you can play along with
The music library passed 1,000 playable pieces — songs, quartets, hymns and the famous piano repertoire from Clair de Lune to La Campanella — plus practice tools, tempo that follows the score, and a beat maker that shares by link.
17 July 2026 · Faith
Meet Ruth — the gleaner of Scripture
Why our Bible companion is named after a Moabite widow, how her living portrait is drawn entirely in code, and why the room where an AI brain would go is deliberately empty. The design story of Ruth.
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8 July 2026 · Risa
Risa understands you now — not just your keywords
Our on-device guide just got much better at understanding what you actually mean — "get in shape" finds the weight tracker, "teach me piano" finds the piano, "a game for two people" finds a duel. In English and 中文, on any phone, and still entirely private on your own device. She's also honest and helpful when she doesn't have something, remembers your favourites across both languages, and has a new private mode.
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6 July 2026 · Data
Watch the trend, not the scale
Our new Weight Tracker smooths the daily noise into a real trend line, narrates the ups and downs of your journey in plain language (no AI), and celebrates every milestone with a four-tier reward ladder. Imports from Renpho, Apple Health and Google Fit, auto-logs each morning, does family profiles — and keeps every reading in your browser.
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5 July 2026 · Edu
The worksheet becomes the game
Our Chinese tools grew up: drop in the weekly worksheet from your child's Chinese class — a PDF or a photo — and eight practice tools drill exactly its characters, word families, 成语, poem and reading. On-device, private, free, and built to keep working with or without a class.
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4 July 2026 · Games
Phyloca: the tower defense where you are the tower
Backyard wildlife with high-tech weapons defends a cottage — and you walk the battlefield as one of five animal generals. Command from above or fight in the grass, lure the horde with the Porch Light, survive Cottage Nights, or take the whole game outside with GPS.
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4 July 2026 · Risa
Meet Risa 糯米 — your guide to everything here
Your friendly guide to the whole site — she understands what you mean, shows you around, and remembers you. Three faces, real feelings, and a warm little soul. Watch her moods on video, then meet her live.
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3 July 2026 · Edu
Introducing SpecEnvoy Art
Walk the history of painting on a timeline — 14 periods, ~50 masters — then step inside each artist's own walkable 3D gallery, hung with their real public-domain paintings. Free, bilingual, nothing to install.
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2 July 2026 · Games
We built an arcade — and four more games
SpecEnvoy has a Games section now: a 28-cabinet neon arcade plus four bigger games — a survival shooter, open-world driving, 3D flight and a vertical shoot-'em-up. All free, all in the browser, everything you fly and drive made up from scratch.
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2 July 2026 · Edu
Introducing SpecEnvoy Music
Scroll the history of the cello and violin on a timeline, tap any composer for a museum placard, and hear the great works played from the score — plus a practice studio and a sight-reading trainer. Free, bilingual, public-domain.
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2 July 2026 · Data
Where Earth is breaking heat records
Heat Tracker is a live world map of the past week's peak temperatures — every country, US state and Chinese province — colored by how far above normal they ran, flagging new all-time highs. Built from NASA data, rebuilt every week.
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2 July 2026 · SpecEnvoy
A site you can search — in eleven languages
The site grew, so we reorganized it, added a search that shrugs off typos and abbreviations, and put the whole interface in eleven languages — all of it running in your browser, nothing about your search or your language leaving your device.
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28 June 2026 · Brand
A mark made of triangles
How we designed the SpecEnvoy logo — a hexagon built from six triangles, read as a 3D cube and framed in pink, a sibling to the AI = 爱 = ♥ morph.
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28 June 2026 · Edu
How big is South Korea, really? Meet the GDP Atlas
A new free, interactive map: pick any country and see which Chinese provinces or US states add up to the same economy — with population, wealth per person, land area and the biggest company of each.
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27 June 2026 · Edu
Introducing SpecEnvoy Edu: learning that clicks
We're starting a small, free, privacy-first education section for kids and teens — an arithmetic trainer, a divisibility guide, and an interactive trigonometry playground, with much more to come.
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19 June 2026 · Risa
— a companion that remembers you
Why a small, fully on-device model can't be a know-it-all assistant — but can be a warm, expressive presence that remembers you over months, all on your own phone.
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12 June 2026 · Luxie
Painting your voice
How Luxie's living waveform and breathing glow are built from a single number — loudness — using basic graphics math, entirely on your device.
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7 June 2026 · StarlingType
What's inside StarlingType
How StarlingType turns your speech into text — in English and Chinese — without sending a single second of audio to the cloud. (Plus a one-click technical deep-dive.)
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More on the way.