An AI companion for the heavy days
Write what is hard to say. RiddleBoox listens to the whole page, remembers the thread, and answers with the kind of patience that lets you stay with yourself a little longer.
Android / made for BOOX
The native Android app is being prepared for BOOX tablets. The download link will live here as soon as the first build is ready.
The relationship
RiddleBoox keeps the interface quiet so the relationship can feel human. You write as yourself; your companion listens without asking you to make the feeling neat, then answers in the same medium your thought began in.
Your hand can wander, hesitate, and stop. The unedited sentence is enough for a companion to begin listening.
When you lift the pen, the page makes room. The pause is not a loading screen; it is the moment your companion gathers the thread.
The reply returns to the paper, so the exchange feels like a thought shared with someone — not a feed of messages.
Agent support for the life around your page
The same patient companion can take on different roles around the feeling you bring to the page. A friend to confide in, a teacher when you want to grow, a reader when a book opens something up, or a helper when the next step is practical.
Book agent
When a thought sends you looking for a story, search your library, follow highlights, or ask the agent to find and download the next book.
01 / discoverEnglish tutor
Write the sentence as it comes. Ask for a clearer phrase, a gentle correction, or a conversation that follows what is on your mind.
02 / learnReflection companion
Use a gentle agent to name what you feel, notice patterns, and think through a next step. A space for reflection, not a replacement for professional care.
03 / reflectSharing companion
Share what is on your mind, return to earlier pages, and keep a thread of what matters with a companion that listens before it advises.
04 / shareA relationship that grows
Writing gives an AI something a prompt never can: the texture of a person over time. RiddleBoox keeps the evenings when something felt heavy close, so you can return to the thread instead of having to start explaining yourself from zero.
Made for the medium
You don't have to make sense of everything before you say it.
Writing is slower, physical, and less performative. It lets a difficult feeling arrive before you ask anyone to answer it.
BOOX pen input and e-ink pacing keep the interface out of the way, so the companion can listen before it reaches for advice.
Vision, memory, books, notes, and tools meet on one page — the same place you started telling the truth.
Start with a blank page
Write the line you almost kept to yourself. RiddleBoox gives it a quiet page, a patient reply, and a companion to return to when you are ready.
The short version
It is a native Android companion for BOOX tablets. You write to it like a diary, and it can respond, remember, teach, read with you, or help manage things when you ask.
Because writing is not only a way to enter words. It slows attention down, makes room for uncertainty, and shows more of how a thought is forming. That is the kind of context a companion can understand.
Yes. Different agents can take on different roles, and the app can work with your books, highlights, BOOX notes, and workspace — including finding and downloading a book when you ask. The page stays the same; the kind of help changes with the moment.
No. RiddleBoox can be a gentle space to reflect, name a feeling, and think through a next step, but it is not a therapist, crisis service, or replacement for professional mental-health care.
RiddleBoox is a BOOX project inspired by Riddle’s ink-first diary idea and Inka’s native Android approach. It is its own companion, built around the belief that the page should come before the prompt.