Local AI Translate uses 100% on-device AI. Your text is never sent to any server, cloud service, or third party. All translation happens locally on your iPhone.
1. Overview
Local AI Translate ("the App", "we", "our") is a translation application that uses a large language model (LLM) running entirely on your device. This Privacy Policy explains how the App handles your information.
We are committed to your privacy. The core design principle of Local AI Translate is that all AI processing is performed locally — no translation text, no personal data, and no usage information is ever transmitted off your device.
2. No Third-Party AI Service
Local AI Translate does not use any third-party AI or cloud translation service (such as OpenAI, Google Translate, DeepL, Azure, or any other provider). The LLM inference engine (llama.cpp) and the model weights run entirely on your device's hardware (Apple Neural Engine / GPU / CPU).
There are no API calls to external AI services. There is no user account, no API key linked to your identity, and no backend server that receives your data.
3. Data Handling Summary
| Data type | Collected? | Sent off device? | Shared with third parties? |
|---|---|---|---|
| Text you input for translation | No | No | No |
| Translation output | No | No | No |
| Device identifiers | No | No | No |
| Location data | No | No | No |
| Usage analytics | No | No | No |
| Crash reports | System-level (Apple) | Apple only (if you opt in) | No |
Note: Crash reporting (if enabled) is handled entirely by Apple through the standard iOS crash reporting system. We do not have a separate crash reporting SDK.
4. What the App Does with Your Text
When you enter text for translation, the following happens entirely on your device:
- The text is passed to the on-device LLM inference engine (llama.cpp).
- The model processes the text and generates a translation.
- The result is displayed to you within the App.
The text is held in memory only for the duration of the translation session and is discarded when you close or clear the translation. It is never written to persistent storage, iCloud, or any external location.
5. Model Downloads
The App may download LLM model files (GGUF format) from the internet during initial setup or when you choose to download a new model. These requests contain only standard HTTP headers — they do not include any translation text or personal information. Once downloaded, the model files are stored locally on your device and used without any further network connection.
6. Network Usage
The App does not require an internet connection to perform translations. Network access is used only for:
- Downloading model files (described above).
- Checking for app or model updates (optional, contains no personal data).
7. Children's Privacy
The App does not knowingly collect any personal information from children under the age of 13, nor from anyone of any age, as described in this policy.
8. Data Retention
Because we do not collect any personal data, there is nothing to retain or delete. Translation text exists only in your device's RAM during processing and is not persisted.
9. Your Rights
Since the App does not collect personal data, there is no personal data for us to provide, correct, or delete on your behalf. You retain full control of all data on your own device at all times.
10. Changes to This Policy
If we make material changes to this Privacy Policy, we will update the effective date at the top of this page. Continued use of the App after changes constitutes acceptance of the updated policy. However, our core commitment — that your translation text is never sent off your device — will not change.
11. Contact
If you have questions about this Privacy Policy, please open an issue on our GitHub repository:
https://github.com/On-Device-AI-Application/translator-site/issues
Or email us at li.changwen@foxmail.com.