Lexify ("the app") rewrites and explains text with an AI model that runs entirely on your device. The text you select, share or copy into Lexify, and the AI responses, are processed only on your device. They are never sent to the developer or to any cloud service. To fix bugs and improve the app, Lexify sends crash reports and, unless you turn it off, anonymous usage statistics through Google Firebase. These never include your text or the AI responses. The app contains no advertising, does not use the advertising ID, and the developer does not sell any data.
When you open Lexify from the text selection menu, the share sheet, the Quick Settings tile or the copy bubble, the text is passed to the on-device AI model. Neither the text nor the generated result leaves your device, and the app does not keep a history of either after the popup is closed.
On first use the app downloads the AI model you choose directly from Hugging Face (huggingface.co) using Android's system download manager, which shows the download progress notification: LFM2 by Liquid AI (about 700 MB), the default, or, for writing in other languages, Gemma 4 by Google (about 2.8 GB). Like any download, this request reveals technical information such as your IP address and device details to Hugging Face. No text you process is included. That information is handled by Hugging Face under its own Privacy Policy. Lexify does not contact Liquid AI's or Google's servers to download or run the models. After the download, the app works offline.
Lexify uses two Google Firebase services, with Google acting as a data processor for the developer:
Neither service ever receives the text you process, the AI responses or the contents of your clipboard. The advertising ID and Android ID are not collected, and the data is not used for advertising or shared with advertisers.
You can turn usage statistics off at any time with the "Anonymous statistics" switch on the app's home screen. Firebase processes this data under the Firebase Privacy and Security terms and the Google Privacy Policy. To ask for data linked to your installation to be deleted, contact the developer (see below) or reinstall the app, which resets its identifiers.
Lexify Pro is an optional one-time in-app purchase handled entirely by Google Play. You pay in Google Play, and your payment details are never visible to Lexify or the developer. The app only receives Google Play's confirmation that Pro was bought on your Google account, keeps that confirmation on your device so Pro works offline, and asks Google Play again from time to time so that a purchase made on another device, a redeemed promo code or a refund is reflected. If usage statistics are on, Google Analytics for Firebase also records that a purchase happened, with the product, price and currency, so the developer can see how many people buy Pro. Purchases and refunds are governed by the Google Play Terms of Service and the Google Privacy Policy.
The copy bubble is optional and off by default. If you turn it on, Lexify uses Android's Accessibility Service API to receive accessibility events from other apps: the labels and IDs of buttons and menu items you tap, and the text of notifications and system announcements. These events are used only on your device, only to recognise a "Copy" action or a "Copied" confirmation, so that a Lexify shortcut can be shown for a few seconds. Lexify reads your clipboard only after you tap that shortcut. Accessibility data is not stored, logged, collected or shared, and is never included in crash reports or statistics. You can turn the service off at any time in Settings › Accessibility.
Each AI response has a "Report" button. It opens your own email app with a prefilled message to the developer that includes the response. Nothing is sent unless you choose to send that email yourself. Emails you send are used only to review the report and improve the app, and are not shared with third parties.
Lexify is not directed at children under 13 and does not knowingly collect personal data from them.
If this policy changes, the updated version will be published on this page with a new date.
Questions about this policy: polodarb.dev@gmail.com