iOS 17 · watchOS 10 · BYOK · No subscription

Live Chinese translation,
the Pro way.

Realtime AI interpretation with your own API keys. Connect your own providers for live speech translation — no SpeechKey account, no SpeechKey-hosted transcript storage, no subscription lock-in.

9,99 € once · No subscription · Direct provider connection · No tracking · No VPN for China-Only

Download on the App Store

SpeechKey live translation session — ZH→DE, 229 ms latency

Why Bring Your Own Key

Control your provider. Control your cost. Control your data path.

Control your provider

Choose the AI stack that fits your quality, latency, region, and cost needs. Switch anytime — your configuration, your choice.

Control your cost

You pay providers directly at their published rates. SpeechKey adds no markup. Your provider dashboard shows exact usage.

Control your data path

In the consumer BYOK app, audio is sent from your device directly to the providers you configure. SpeechKey does not insert a server layer into that path.

Control your region

Use China-compatible providers for no-VPN operation in mainland China, or global providers for the highest quality in other regions.

SpeechKey is not a one-tap tourist translator. Initial provider setup — creating accounts at 2–5 AI providers — is required once. Setup guide → · Understand BYOK →

Who it's for

✓ Right for you

Engineers in German-Chinese business meetings
Expats in Shanghai, Shenzhen, Beijing, Suzhou
Conference interpreters as a backup channel
Pros who want to control their own API keys

✗ Not for you

Tourists looking for a vacation phrasebook
Casual users who don't want to manage API keys
Google Translate replacement for simple queries
Users without reliable internet connection

Five Pipelines

Pick once. Switch in seconds.

Each pipeline is a curated ASR→MT→TTS stack. Pick once in Settings — switch mid-session from the chip in the app header.

Pipeline	Stack	VPN	Latency	Quality	Cost/min
Standard Balanced	iFLYTEK · GPT-4o-mini · iOS Voice	Required	~1.5 s	★★★★	$0.02
Pro Live Premium	iFLYTEK · GPT-4o flagship · MiniMax	Required	~2.5 s	★★★★★	$0.10
Realtime Fastest	OpenAI Realtime API (end-to-end)	Required	< 1 s	★★★★	$0.15
China-Only No VPN	iFLYTEK · DeepSeek · MiniMax	None	~2 s	★★★	$0.01
Watch-Modus On wrist	Standard stack · Watch primary · TTS off	Required	~1.5 s	★★★★	$0.02

Deep dive: all five pipelines →

Architecture

Honest architecture.

BYOK — Bring your own keys

Every API call goes directly to the provider you chose. You pay at their actual rates. SpeechKey adds no markup.

iFLYTEK Chinese ASR · primary
OpenAI Translation · primary
DeepSeek Translation · China-Only
MiniMax Premium voice · optional
ElevenLabs Voice · optional

Privacy by architecture

No SpeechKey backend — in the consumer BYOK app, audio goes from your device directly to your configured providers
No accounts — no email, no signup required
Keys stored on-device — stored in iOS Keychain, not transmitted to SpeechKey
Transcripts local — stored on your device, exportable and deletable
Data-minimised by design — no SpeechKey account, no SpeechKey transcript storage in the consumer BYOK app

Provider-side logging, retention, and data processing are governed by the terms and settings of the provider accounts you use. Full privacy policy →

Known limitations

What SpeechKey does not promise.

Not a certified legal or medical interpreter

Accuracy depends on provider, accent, background noise, and terminology

BYOK setup requires accounts at 2–5 external AI providers

Provider costs are billed separately by the provider — not by SpeechKey

China network behaviour may vary by location and VPN

Provider-side logging and retention depends on your provider account terms

Pricing

€9,99

One-time · No subscription · ¥99 in China

✓All five pipelines included

✓Apple Watch companion

✓Terminology manager

✓Session history (30 days + archive)

✓Family Sharing (6 users)

✓All future updates