# SOPHI0: Philosophy Zero — A notebook you rule in > A notebook you rule in (iPhone/iPad app by Daniel Frank.) - Source: https://appshunter.io/ios/app/sophi0-philosophy-zero/id6785720555 (this page in markdown: same URL + `.md`) - Developer: [Daniel Frank](https://appshunter.io/developer/6785720557) - Category: Education, Lifestyle - Price: Free with in-app purchases - Age rating: 12+ - Requires: iOS 17.0 · 4 MB - Languages: American English - Released: 2026-07-09 - Data updated: 2026-08-27 - User reviews in markdown: https://appshunter.io/ios/app/sophi0-philosophy-zero/id6785720555/reviews.md ## What is SOPHI0? Sophi0 is a notebook. Your notebook opens on its cover, then its contents, then a page for today. Whatever you write goes on today's page, dated, in order, and stays there. A hundred and ninety-two leaves make a volume; when you fill one, it rolls to the next. On the shelf beside it are notebooks somebody else wrote. You can read them, and you can rule on them. RULING Every passage in this app can be answered. You hold it, you reject it, or you leave it open — and the moment you do, that passage is stamped onto your own page with its author and your verdict, permanently. Your reading and your writing end up in the same record, in the order you did them. Nothing gets deleted. If you want a line gone you cross it out, the way you would in a real notebook, and you can uncross it later or remove it for good. The journey stays visible. That is the point. QUESTIONS Write a question on a page and it becomes a marker — bolder on the leaf, logged with the day you asked it, and collected with every other question you have ever asked. Answer it now or come back in a year. A question you have carried for eight months is worth knowing about. SEARCH Everything you have read, written, ruled on, and asked is searchable, and every result tells you the page it lives on and takes you there. WHAT SHIPS WITH IT - The Negative Philosophers — Socrates, Plato, Nietzsche and Kant, arguing against Philosophy Zero. - System Zero — the philosophy itself. - The Second Mind — twenty-six chapters. - Sophi0 — the shorter pieces. You can hide any of them, make notebooks of your own, tear a page out of one and into another, and bring in a notebook someone sends you. THINKING WITH SOPHI0 On a device with Apple Intelligence, Sophi0 will sum up a page, a whole notebook, or where you stand — what you have held, what you have rejected, what you keep returning to, and which of your own pages it came from. It reads nothing but what is inside your app, and it runs entirely on your device. Without Apple Intelligence the notebook works exactly the same; this simply is not offered. A NOTE ON THE NEGATIVE PHILOSOPHERS Those four are AI-represented positions of historical philosophers, written from documented positions — not verbatim quotation, and adversarial to Philosophy Zero by design. Every passage of theirs says so, on the page and on the widget. We would rather tell you twice than once. IF PHILOSOPHY IS NOT WHY YOU CAME There is a switch. Turn it and the philosophy goes: no subjects, no shelf of given notebooks, nothing offered to you to rule on. What is left is a blank notebook — a page a day, your own volumes, your questions, your search, your summaries. A journal, or a designer's day-book. The switch goes both ways, and nothing you wrote is lost either direction. PRIVATE BY DESIGN No account. No login. No servers. Sophi0 makes no network requests of any kind — there is not one web address anywhere in the app, and the AI is Apple's on-device model or nothing at all. Export the whole notebook to a file whenever you like and keep your own copy. FREE All of it. No subscriptions, no unlocks, no tokens, no limits on how much you write. Sophi0 is a project from Philosophy Zero · sophi0.com ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlimited Writing | $2.99 | one-time | | 8 Tokens | $0.99 | one-time | ## Version history (last 4 releases) ### 3.1 — 2026-08-17 Anything you bring into Sophi0 from a file now keeps its paragraphs and its headings. The app had been flattening them on the way in — which is also why The Second Mind carried a title page in its contents as though it were a chapter. It reads as one book again, twenty-five chapters, with every ruling you made still pointing where it pointed. ### 3.0 — 2026-08-16 Sophi0 3.0 is a rebuild. The app is now a notebook. EVERYTHING IS FREE Every purchase is gone. So are the tokens, the ranks, the daily cycle you had to advance, and the cap on how much you could write. If you paid for anything in an earlier version, it is simply open to everyone now. TWO THINGS TO KNOW BEFORE YOU UPDATE - Home-screen widgets have to be added again. The widgets were rebuilt from scratch and iOS drops a placed widget when that happens. Long-press your home screen, tap +, and search Sophi0. - The vocabulary changed. Moments, ports, batches and the Bitstream are gone. There is a shelf, there are notebooks, a notebook has leaves, and you rule on what you read. WHAT IS NEW - Your notebook — a page a day, dated, in order. 192 leaves to a volume. - Ruling — hold, reject, or leave open any passage, and it is stamped onto your page with its author and your verdict, permanently. - Questions — write one on a page and it is marked, dated, and collected with every question you have ever asked. - Search — across everything you have read, written, ruled on and asked, with the page it lives on and a way straight back to it. - Crossing out — nothing is deleted. Cross a line out, uncross it later, or remove it for good. - Notebooks of your own — make them, tear a page from one into another, bring in a notebook someone sends you, hide any of the ones that shipped. - Sum things up — on a device with Apple Intelligence, Sophi0 will sum up a page, a notebook, or where you stand, from your own material and nothing else. Entirely on-device. - A blank mode — a switch that takes the philosophy out and leaves the notebook. Reversible, and nothing is lost either way. - On iPad, the notebook now opens as a spread — two facing leaves, like a book on a desk. - Lock-screen widgets, and a larger home-screen one. - Text size follows your phone's setting if you want it to. Sophi0 still makes no network requests of any kind and still keeps every word on your device. ### 2.0 — 2026-07-14 This release is a ground-up refinement of Sophi0. • A cleaner, more readable interface — larger type throughout, a new Text Size setting (Standard, Large, Larger), and support for the system-wide Dynamic Type slider. • Redesigned for iPad — panels and layouts now scale and center properly on larger screens. • A growing library — import reading packs to add new philosopher series and theory batches to your practice. • On iPhone and iPad with Apple Intelligence, on-device reflections synthesize your reading and writing — privately, with nothing leaving your device. • Smoother reading, plus many refinements and fixes. ### 1.0 — 2026-07-09 No release notes. ## Related topics [philosophizeme](https://appshunter.io/ios/topics/philosophizeme) · [philosophy widget](https://appshunter.io/ios/topics/philosophy-widget) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*