About a year ago I was influenced to restart my daily Stoic practice after listening to a lecture series by the Stoic writer and philosopher, Donald Robertson. I searched mobile apps out there which I thought would be the best fit for me and my style but I couldn’t find anything that was authentic to the practice or sticky enough for me to want to use every day, so I created my own framework in Notion. A year or so later, I was using the Notion practice daily and had the idea to turn it into a mobile app myself with the help of AI.

Most people weighing this are really choosing between three things: a quote-a-day app, a blank-page journal, or a habit tracker with a philosophy skin on it. Marcus is a fourth thing. It’s a structured daily examination, in the order the Stoics actually ran it: a sixty-second morning compass, a reading chosen for what you’re carrying that day, five morning prompts, and an evening examination built on the three questions Epictetus sets out in Discourses III.10. Every week you review against the four cardinal Virtues. A blank page lets you avoid things. Sequential prompts don’t.

The second difference is that it refuses to punish you. There’s no streak shaming. Alongside the streak sits a number called Time in practice, every minute you’ve ever spent reading, journaling or meditating, and unlike a streak it never resets. Miss a day and nothing is taken from you, because you did the practice. The Stoic response to a broken streak was always the same one: begin again.

The third is the part I’d most want on the record. In August I audited the app’s own quote library one passage at a time against its sources. It went in with 374 entries and came out with 224. Fifty-five were not what they claimed to be. Marcus Aurelius was credited with a line from Gladiator. Seneca was credited with a Semisonic lyric. Aristotle’s most-quoted sentence turned out to be Will Durant paraphrasing him, and it was in there twice, in two different wordings. I published the findings instead of quietly deleting them, and credited Gregory Sadler and Thomas Colligan for the six I’d missed that they had already traced. A philosophy about seeing things as they are deserves better sourcing than it usually gets.

Everything else follows from that: your journal never leaves your device, there’s no account, and I can’t read what you write.

Honestly, most of it is people typing "stoic journal" into the App Store and finding me. Marcus has been live for three weeks. If I described a channel mix to you I’d be making it up, and I’d rather say that than perform a growth story I don’t have yet.

I hope to generate enough awareness from the app both through organic and paid digital advertising that users seek me out by typing Marcus instead of by related keywords.

Handed over: the daily newsletter. Every morning a model drafts a full Stoic meditation on a single theme, with the passages sourced, and it’s in my inbox before I’m awake. Thirty-six editions have gone out that way, one a day since July 8. My whole job is the veto. If a draft isn’t good enough, I delete the file and nothing ships. A year ago I’d have told you daily writing was the least delegable thing I did. What changed my mind was noticing the drafts were more consistent than I was.

Went back to doing by hand: the morning journal prompts. There are five, and I’d had them reviewed closely. Every one came back clean: accurate, grounded in a real text, properly cited. Then one morning I sat down and actually answered all five as myself, about my own day, and I wrote nearly the same paragraph twice. Two of them were the same question wearing different clothes.

The review had checked every prompt. It never asked whether one person could answer all five on a real morning without repeating themselves, because that isn’t a property of any single prompt. It’s a property of the sequence, and you can only find it by living through it.

So the prompts get tested the slow way now. I answer them as me, about the actual day I’m having, and count how many genuinely distinct things I’ve been made to look at. It doesn’t scale. It’s the only method that finds that kind of problem.

No, not yet. I haven’t been live long enough.

Do this: Find the part of your product that is expensive to verify, and verify it in public. In a wellness app that’s usually the claims. In mine it was the quotations. Checking them took a week I didn’t have and the result made me look worse before it made me look better, which is exactly why it’s worth doing: anyone can generate a thousand Stoic quotes before lunch now, and almost nobody will check one. That gap is the entire business.

Own a corpus, not an interface. Interfaces get cloned in a weekend. What can’t be cloned is a body of work with your judgment in it and your name on the corrections. Build the thing that’s still yours in three years.

And use your own product as a user, under real conditions, on your own actual bad days. Not as its builder, checking that features work. As a person who needs it to work. Almost everything I’ve gotten wrong was invisible from the builder’s chair and obvious from the user’s.

Ignore this: Ignore your search traffic for the first year. Publish the library, then stop refreshing the dashboard. A new site with no reputation gets crawled and not indexed, and that’s not a bug to fix, it’s a sentence to serve. Building it and being patient are the same task.

Ignore paid acquisition until strangers have rated you. Buying installs before you know whether anyone stays is just paying to widen the top of a leaking funnel.

And ignore the pressure to ship faster because the tools got faster. Speed stopped being scarce. Being right is scarce. Spend the surplus there.