> ## Documentation Index > Fetch the complete documentation index at: https://docs.inki.so/llms.txt > Use this file to discover all available pages before exploring further. # FAQ > Frequently asked questions about Inki ## About Inki ### What is Inki? Inki is an AI text editor. You can use AI in the editor to brainstorm, draft, and revise blogs, reports, business documents, and other writing. ## Plans and Pricing ### Is there a free plan? Yes. The Free plan gives you monthly credits to use AI features. ### What are credits? Credits are units consumed when you use AI features like generating or editing text. See [Plans & Pricing](/en/plans-pricing) for details. ### When do credits reset? Monthly credits are added and reset every month on both monthly and annual plans. Unused monthly credits do not carry over. Bonus credits, purchased credits, and plan carryover credits can carry over. ### Can I buy more credits? Yes, on the Pro and Max plans. ### When do plan changes take effect? * **Upgrade**: Takes effect immediately, and a new billing period starts. * **Downgrade**: Takes effect at the end of your current billing period. You keep your current plan until then. ### How am I charged when upgrading plans? When you upgrade, a new billing period starts and you are charged for the new plan. Unused credits become plan carryover credits only when you switch immediately from a paid monthly plan to the same plan billed annually, or to a higher plan billed monthly or annually. Changes from an annual plan and changes to a lower plan are not eligible. See [Plans & Pricing](/en/plans-pricing) for details. ### What payment methods do you accept? Credit card only (via Stripe). ## Features ### What can I write with Inki? You can create blogs, emails, proposals, reports, novels, and other types of writing. ### What can I do with folders? Use folders to organize notes and add custom instructions for your purpose or writing rules. See [Notes and folders](/en/features/notebook) for details. ### Which AI models can I use? Most models are available on every plan. Claude Opus models and GPT-5.6 Sol require Pro or Max. Models that are not available on your current plan appear locked. Select Auto to use a recommended model available on your current plan. See [Models and Reasoning](/en/features/models) for details. ### What are the file upload limits? You can attach up to 5 files and 512MB total to one AI Assistant chat. Supported formats include images, video, audio, PDF, Word (.docx), Excel (.xlsx), PowerPoint (.pptx), and text (.md, .markdown, .txt, .csv, .html, .htm). PDFs can have up to 1,000 pages. Text files can contain up to 20,000 characters, videos can be up to 10 minutes long, and audio can be up to 2 hours long. You can preview text, images, PDFs, audio, and video before sending. Office files can be attached but do not have previews. ## Content Rights ### Who owns the copyright for content generated with Inki? You own all rights to content generated with Inki. ## Technical Requirements ### Which browsers are supported? **Recommended**: Latest version of Google Chrome Other common browsers (Firefox, Edge, Safari) generally work but may have issues with some features. ### Does Inki work on mobile? Yes. In a mobile browser, you can create and edit notes, organize folders, search, use the AI Assistant, share notes, view update history, edit tables, use Trash, change settings, and manage your plan. Some desktop-only features are not available. ### Is there a desktop app? Yes. Inki Desktop is available for Macs with Apple silicon and macOS 11 or later. You can get it from the official [download page](https://inki.so/en/download). The Mac app doesn't support Intel Macs. Use Inki in your browser if your device isn't supported. ### Can I get notifications when AI replies on Mac? Yes. In the Mac app, open Settings > Notifications and turn on "AI reply notifications." You can also turn on "Show an AI reply preview" to include part of the reply in the notification. Notifications are available in the Mac app. ### What if I run into issues? Contact us at [hello@inki.so](mailto:hello@inki.so) if you experience problems or find bugs. ### Can I export my data? Yes. You can export notes in these formats: * HTML * Markdown * PDF ## Account ### What happens to my signed-in devices after I reset my password? Setting a new password ends every active Inki session. Sign in again on each device with your new password. ### What happens when I delete my account? You can delete your account from Settings > Account. Your account and saved data are permanently deleted and cannot be restored. If you have a paid plan, deleting your account also cancels your current plan automatically. ## Support ### Will I get a reply to feedback sent from the left sidebar? Feedback in the left sidebar is a quick way to share comments or report a problem. It is not designed for individual replies. If you need a response, email [hello@inki.so](mailto:hello@inki.so). ### What are support hours? **Support hours**: Weekdays 10:00-19:00 (Japan time) **Response time**: Within 2 business days Contact us at [hello@inki.so](mailto:hello@inki.so) with questions. ## Privacy and Security ### Is my writing used to train AI? No. Your content is never used for AI model training. We send requests to AI providers (Anthropic, Google, OpenAI, and Fireworks) for processing, but our contracts guarantee they won't use your data for training. ### What data are the AI models trained on? Inki uses models from Anthropic, Google, and OpenAI. These models are trained on publicly available datasets and text data collected by each company. ### Does Inki use my input data for machine learning training? No. We never use your input data for machine learning training without your explicit consent. We'll only use your data for training if you specifically opt in. ### What's your security setup? We're ISMS (ISO/IEC 27001) certified for software development and operations. We respect user privacy and maintain data confidentiality. See our [Security Policy](https://then.co.jp/security) for details. ### What personal information do you collect? We may collect your name, address, phone number, email, payment information, support inquiries, usage history, and cookie data. See our Privacy Policy (Article 2) for details. ## Terms and Policies ### Where can I find terms and policies? * [Terms of Service](https://inki.so/en/terms) * [Privacy Policy](https://inki.so/en/privacy)