NoNetPlay: AI Interpreter

Real-time simultaneous interpretation, completely offline. NoNetPlay translates live conversations as you speak — your voice never leaves your iPhone, even when you're 30,000 feet up.

Unlike apps that need to download language packs every time you want a new language, NoNetPlay's entire AI translation engine lives on your iPhone. Download the models once (about 2.9 GB, Wi-Fi recommended), then use it offline from then on.

Simultaneous Translation — 14 Language Pairs

• Chinese ↔ English, Japanese, Spanish, German (stable); Chinese ↔ Korean, Portuguese, Indonesian, Vietnamese, Dutch, Arabic, Italian, Russian, Thai, Hindi (experimental) • Every pair translates between Chinese and one other language • Speak in one language, hear it in another — automatic language detection • Voice recognition + AI translation engine, both run entirely on-device • Sentence-by-sentence output with synchronized voice playback — no waiting

AI Chat

• Built-in offline AI assistant for free-form conversations • Switch between different on-device AI options mid-conversation • Real-time output, word by word as it generates

Privacy First

• Every word stays on your iPhone — no servers, no cloud, no logs • No account, no login, no subscription pressure — just open and use

Offline AI Download Manager

Built-in download manager with multiple sources (domestic mirrors prioritized for users in mainland China). Resume on interruption supported. Available offline AI options:

• Translation AI (~984 MB) — runs alongside voice recognition for fluid real-time translation • Voice Recognition (~1.6 GB) — multi-language voice detection across 15+ languages • Advanced Chat AI (3.5 GB) — more powerful AI chat capability • Plus Chat AI (2.5 GB) — balanced everyday conversation

Use Cases

• On a flight — interpretation works in airplane mode • In a foreign hotel — no roaming charges, no WiFi search • In meetings — discuss freely without sending audio to a cloud server • Language learning — practice anywhere, anytime • Business travel — confidential conversations stay confidential