Live · 2026
KanjiHub
Learn Japanese, from Hiragana to N1
A web app for phones and computers: spaced-repetition reviews, a world map of levels, handwriting, a full kanji dictionary and short daily videos with Akane, its fox guide.
Indie studio · Barcelona
We build apps people actually enjoy using.
Sparklitt is a small, independent studio. We design and build fast, honest, beautifully crafted apps — for learning, for play, for everyday life.
Our products
What we've built
Every product is designed, built and run by us, end to end.
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Live · 2026
Akane Studio
From a short script to finished lesson videos
Our in-house video pipeline: characters are voiced and lip-synced, captions light up word by word, kanji are built from their parts, and every video is reviewed before it's scheduled to five platforms.
In the works
Our next app
Something new is on the workbench — and it won't be about learning Japanese.
KanjiHub · In numbers
- worlds, from Hiragana to N1
- 7
- dictionary entries
- 217,201
- kanji with readings and stroke order
- 13,108
- pets to collect
- 14
Akane Studio · In numbers
- videos rendered
- 228
- series, each with its own format
- 12
- characters in the cast
- 15
- platforms, scheduled from one queue
- 5
- 01
People first
Real problems, real people. We build what we'd want to use ourselves.
- 02
Beautiful by default
Original art, thoughtful motion, accessible colour and type.
- 03
Honest, built to last
Clear prices, no dark patterns, no ads that follow you around.
- 04
Checked by people
AI tools help us move fast; people check the facts, the content and the feel.
The studio
About Sparklitt
Sparklitt is an independent studio based in Barcelona. We're small on purpose: it keeps us close to the people who use what we make, and lets us ship carefully.
Our story
Sparklitt started with one app we wished existed: a way to learn Japanese by writing, listening and reading real words — not memorising lists. Building it taught us what we care about: apps that respect your time and make everyday life a little brighter.
Small team. Big care.
Build log
Notes from the workbench
What we shipped lately — small steps, written down.
Conjugation practice, now offline
KanjiHub's Android app can drill verb and adjective conjugations with no connection at all.
Hello, sparklitt.com
The studio got its own home: who we are, what we build, and how.
KanjiHub moves to SvelteKit
The whole web app, rebuilt: lighter builds, faster pages, and offline that finally plays along.
Every word's audio, now in Opus
494,214 audio clips re-encoded and moved to the edge — 2.8 GB, without a single failure.
FAQ
Questions
Got questions? We've got answers.
What is Sparklitt?
An independent app studio. We create and run our own products — KanjiHub is the first.
Do you take client projects?
We focus on our own products. If you have an idea you think fits, write to us anyway — we read everything.
Where are you based?
Barcelona, Spain. Our products are used around the world.
How do I contact you?
Email hello@sparklitt.com. We usually reply within a couple of days.
Let's build something greatHave an idea?
Have an idea?
We'd love to hear it.
Whether it's feedback on one of our apps or just a hello — we're always open for a chat.
Get in touchAlso find us on