Start with what is in front of you
Take a photo in the app, upload a picture, or paste an image into the web chat. Ask about what you see, get help understanding a document, or use the picture as the starting point for an edit.
Speak, type, or listen
Dictate your question with voice input and use read-aloud to hear an answer. This is useful when typing a long message is awkward. You can still review and correct the text before sending it.
Bring the bigger tasks along
Upload files, work with spreadsheets, create images, and preview a website inside TachlisAI. Sign in to use these tools. The five-message guest trial on the homepage is a simpler way to try the chat first.
Also in TachlisAI
Zmanim you can share
The Zmanim page shows daily times for your selected date and location, with an expanded list when needed. Tzeis HaKochavim identifies its 8.5° calculation; the separate 72-minute time stays labeled separately. Share a clean image, save it, or send the displayed times as WhatsApp text. The page and shared card credit Hebcal. Native image sharing requires an app version that includes the sharing update.
Personalization in one place
Settings > Personalization brings together About you, saved memories and your editable chat summary. Choose which details the assistant may use, edit or delete individual memories, and turn each feature on or off. Chat summary keeps a dated activity log and an About you section; you can edit or clear the whole file and ask it to summarize up to 250 recent chats. Personal skills are coming soon. These personal controls are separate from organization workspaces.
Find and reuse useful answers
Search your own chat history to return to earlier work. Share a chat using its sharing controls, or use Download PDF on an assistant answer to save that individual response as a PDF. The answer download does not export the entire conversation. Supported chat modes also accept a follow-up while an answer is being written so you can steer the response.
A few things to know
Is there an app for both iPhone and Android?
Yes. Use the official App Store and Google Play links below. You can also use the browser version without installing an app.
Does the app replace a phone filter?
No. TachlisAI filters its own service. Device access and other apps are still controlled by your phone settings and any filter you use.
Can I choose Claude, Gemini, Grok or Muse?
Personal accounts on any plan can enable All models in Settings > Chat to choose Claude Opus 5.5, Gemini 3.1 Pro, Grok 4.7 or Muse Spark 1.3 through OpenRouter. OpenAI-only is the default; filtering and Hashkafa still apply. Family and business workspaces and guest chats use OpenAI models.
Can I update a request while it is answering?
Send a clarification while a supported chat is answering. Some updates take effect after the current step finishes; failed updates are clearly marked.
Are custom Skills available?
Custom Skills is coming soon and is currently unavailable.