Product Strategy & Discovery
We pressure-test the idea before anyone writes code: scope, users, risks, and the shortest path to a version worth shipping.
Web Platforms
Mobile Apps
AI Products
We build digital products
from the first sketch
to the global launch.
TDH Software is a digital agency and product studio. We partner with founders and teams to design, engineer, and scale software, and we build products of our own, like KoiSpeak.
What we do
One team for the whole product lifecycle
Strategy, design, engineering, and operations under one roof, so nothing gets lost in the handover between agencies.
Web Platforms
Fast, accessible, search-friendly web applications, from marketing sites to data-heavy dashboards and customer portals.
Mobile Apps
iOS and Android apps that feel native, survive bad networks, and are built to be maintained long after launch.
AI & Automation
Language models applied to real workflows like search, extraction, translation and support, with evaluation rather than guesswork.
UI/UX Design
Interfaces designed around the job the user came to do, delivered as a system your engineers can actually build.
Cloud & DevOps
The unglamorous work that keeps products alive: pipelines, monitoring, backups, and infrastructure that scales with demand.
Our products
We do not just build for clients. We build for ourselves.
Running our own products keeps us honest. We feel every slow query, every confusing screen, and every support ticket, and that experience goes straight back into client work.
Clean, fast, free Chinese dictionary
KoiSpeak is a clean, fast, free Chinese dictionary and learning platform. Type Vietnamese, pinyin, or Chinese characters and it works out what you meant, then backs it up with example sentences, grammar explanations, and structured HSK study material.
How we work
A process built for shipping, not for slide decks
Five stages, short cycles, and something you can click at the end of every one.
01
Discover
We map the problem, the users, and the constraints, then agree on what success looks like.
02
Design
Flows, wireframes, and a visual system, validated with real people before engineering starts.
03
Build
Two-week cycles with working software at the end of each one. No black boxes.
04
Launch
Release engineering, store submissions, analytics, and a monitored first week in production.
05
Scale
We stay on for the part that matters: iteration, performance, and growing the product with its users.
Why TDH
What working with us actually feels like
Tell us the problem, the deadline, and the constraints. We will come back with a plan, a timeline, and an honest estimate.
-
You talk to the builders
No account manager relaying messages. The people designing and writing your product are in the room.
-
Fixed scope, honest estimates
We would rather tell you something will take longer than promise a date we both know is fiction.
-
You own everything
Code, designs, infrastructure, and accounts are yours from day one. No lock-in, no hostage repositories.
-
We stay after launch
Launch is the midpoint, not the finish line. We support, measure, and iterate once real users arrive.
Our toolkit
Boring technology, chosen on purpose
TypeScriptReactNext.jsNode.js
React NativeFlutterPythonPostgreSQL
RedisDockerAWSCloudflare
FigmaClaude API
Have something worth building?
Tell us the problem, the deadline, and the constraints. We will come back with a plan, a timeline, and an honest estimate.