A modern Stoic companion for a mind that does not flinch. Talk through what is weighing on you with eight ancient mentors, sort what you can actually control, and journal your way to a calmer, clearer week.
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Free core practice
Marcus Aurelius
PRO
Type your dilemma…
8
Ancient mentors
11
Daily practices
3 min
A day is enough
0
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The daily loop
How Inner Citadel works
Three minutes in the morning, three at night. The practice is deliberately small so that it survives your worst weeks.
1
Name what is weighing on you
Open the morning reflection and write the thing you are dreading in one plain sentence. The Sorting Matrix then splits it into what is yours to control and what is not.
2
Take it to a mentor
Put the same worry to Marcus Aurelius, Seneca or Epictetus. Each answers in their own doctrine and temperament, then hands you one concrete thing to do today.
3
Close the day and review the week
An evening journal captures what actually happened. On Sunday, the Weekly Chronicle shows your emotional trend and names the habit worth working on next.
Inside the app
Eleven Stoic practices, one app
Every exercise is drawn from a real Stoic or Cynic practice and rebuilt for a phone you use on a Tuesday morning.
Mentor dialogue
Stoic Mentors
Interactive dialogue with eight ancient guides. Discuss your daily dilemmas with Marcus Aurelius, Seneca, Epictetus, Diogenes and others, each in their own historical voice.
Select your guide
Write what is on your mind
Receive direct, practical counsel
Thoughtful guidance instead of generic assistant replies.
Exercise
Dichotomy of Control
Separate your stressors. Sort every worry into what the world decides and what your own judgement decides.
List your current concerns
Classify what you can and cannot control
Turn the controllable into action items
Less anxiety spent on things outside your influence.
Exercise
Premeditatio Malorum
Prepare for what you fear. Walk deliberately through the worst case so it loses its grip on you.
Describe a looming worry
Write a rational plan to meet it
Listen to a spoken guided version
Removes the shock from unexpected events.
Journaling
Weekly Chronicle
Track your emotional trends. Reflect each day and read the pattern in your own entries at the end of the week.
Journal your daily reflections
Review the weekly summary
Focus on the recommended exercise
Spot unhelpful cognitive habits early.
Mentor dialogue
Sages' Council
Convene a debate between mentors. Submit one dilemma and watch Marcus, Seneca, Epictetus and Diogenes argue it out.
Submit your current burden
The mentors discuss it in real time
Receive a unified Council Resolution
Several schools of Stoicism synthesised at once.
Mentor dialogue
Cynic Roast
Have your worry taken apart. Diogenes bluntly dismantles the vanity in a fear, then sets you a discomfort challenge.
State a persistent worry
Receive a blunt, unsparing critique
Commit to a voluntary discomfort
Breaks catastrophising and builds tolerance.
Exercise
Theater of Phantasia
Deconstruct your impressions. Separate the raw physical facts from the story you added before it turns into distress.
Input a disturbing impression
Strip away the emotional narrative
Reframe the situation with reason
Interrupts automatic emotional reactions.
Exercise
View from Above
Adopt a cosmic perspective. Zoom out from the personal to the planetary and watch the problem find its true size.
Choose your meditation focus
Widen the perspective to the stars
Receive narrated cosmic guidance
Immediately lightens the weight of daily problems.
Journaling
Diogenes' Lantern
Light the lantern of daily truth. Strike a spark for the day's quote, write your own translation of it, and share a gilded scroll.
Tap to light the lantern
Apply the daily quote to your life
Share a premium gilded scroll
Turns wisdom into a daily habit worth keeping.
Community
Whispering Gallery
Share trials and support others. Float an anonymous whisper into a constellation sky and bestow Sparks of Sympatheia on others.
Write an anonymous struggle
Float it onto the celestial canvas
Send sparks of sympathy to peers
Human connection without the social noise.
Journaling
Socratic Time Machine
Compare past and present selves. Set an old reflection beside your current judgement and measure how far the ground has moved.
Load a past journal entry
Re-evaluate it with today's wisdom
Save the progression thread
Makes slow-growing resilience visible.
The council
The eight mentors
Each guide is written from that philosopher's surviving texts, so they disagree with one another exactly as they did in life.
Marcus Aurelius
The Philosopher King
Steadies your sense of duty, teaches cosmic impermanence, and treats external trials as raw material for patience.
“You have power over your mind — not outside events.”
Seneca
The Dramatic Statesman
Addresses pre-emptive suffering, helps you spend time and ambition well, and points the way to contentment.
“We suffer more often in imagination than in reality.”
Epictetus
The Unyielding Master
Enforces the Dichotomy of Control. Tells you to release the outcome and claim your own choice absolutely.
“Some things are in our control and others not.”
Miyamoto Musashi
The Swordmaster Strategist
Advocates the Way of Walking Alone, single-minded focus, and acting without remorse or second guessing.
“Think lightly of yourself and deeply of the world.”
Zeno of Citium
Founder of the Stoa
Teaches how to live in agreement with Universal Reason and supplies the foundational axioms of the school.
“Well-being is realised by small steps.”
Cleanthes
The Devoted Athlete
Celebrates physical endurance, quiet persistence under fatigue, and wholehearted devotion to fate.
“Fate guides the willing and drags the unwilling.”
Musonius Rufus
The Roman Socrates
Demands action over theory. Teaches physical self-sufficiency, simplicity, and the dignity of daily labour.
“Practice is more effective than theory.”
Diogenes of Sinope
The Cynic Master
Mocks social vanity, demands absolute self-sufficiency, and dares you into voluntary discomfort.
“I am looking for an honest man.”
Live demo
Try an AI Stoic mentor
Pick a mentor, name something that is bothering you, and see the shape of the answer you would get in the app.
System: Connected to Marcus Aurelius. Describe what is on your mind today.
This demo runs on a small set of pre-written replies. The app itself generates a fresh response to whatever you write.
Stoic quotes
“
You have power over your mind — not outside events. Realize this, and you will find strength.
Marcus Aurelius
Plans
Free forever, Pro when you want more
The core daily practice is not behind a paywall. Pro exists for people who want the whole council and the weekly audit.
Inner Citadel is built for focus. No streak-shaming, no gamified pop-ups, no notifications engineered to pull you back in. What you get instead is a calm, dark, fast environment built strictly around the practical application of Stoicism.
Your data belongs to you. Journals live on your device, cloud sync is optional and private to your own account, and a full account wipe is one screen away. Read the privacy policy if you want the specifics.
Zero trackers
Daily wisdom
Cinematic narration
OUR PLEDGE
Our philosophy
No paywall on the core practice. Morning reflections, the dichotomy of control exercise and unlimited conversation with Marcus Aurelius are free, permanently. Upgrade to Pro only if you want the weekly audit, the other seven mentors and the narrated practices — and cancel from your store settings the moment it stops earning its keep.
Questions
Frequently asked questions
What people usually want to know before they install Inner Citadel.
Inner Citadel is a modern Stoic companion app for iOS and Android. It combines interactive AI dialogue with eight ancient mentors, guided journaling, negative visualisation exercises, a dichotomy-of-control sorting matrix and weekly reflection audits — so you practise Stoicism daily rather than only reading about it.
Yes. The free plan includes daily quotes, morning reflections, the Sorting Matrix and unlimited chats with Marcus Aurelius, with no time limit. Pro is an optional subscription that unlocks the remaining seven mentors, evening journals, the Weekly Chronicle audit, cinematic narration and voice reflections.
Yes. Reflections and journal records are stored in local app storage with optional private cloud synchronisation to your own account. There are no third-party advertising or analytics trackers, and you can delete your account and every record at any time from inside the app. Full details are in the privacy policy.
Each mentor is modelled on that philosopher's surviving texts — the Meditations of Marcus Aurelius, the letters of Seneca, the Discourses of Epictetus, the Dokkodo of Miyamoto Musashi. Every mentor carries conversational guardrails that keep answers in the voice, doctrine and temperament of the sage instead of drifting into generic assistant replies.
Eight guides: Marcus Aurelius, Seneca, Epictetus, Miyamoto Musashi, Zeno of Citium, Cleanthes, Musonius Rufus and Diogenes of Sinope. Marcus Aurelius is available on the free plan; the other seven are part of Pro.
Free includes daily quotes, morning reflections, the basic Sorting Matrix and unlimited chats with Marcus Aurelius. Pro unlocks all seven remaining mentors, evening reflection journals, weekly emotional trend audits (The Chronicle), the Sages' Council debate, cinematic text-to-speech narration and voice reflections. See the plan comparison above.
No. Every exercise explains itself in plain language before you begin, and the daily quote comes with a short practical translation. Most beginners start with the morning reflection and the Dichotomy of Control matrix, which take about three minutes a day between them.
No. Inner Citadel is a philosophy and journaling tool for everyday reflection and resilience. It is not a medical device and it does not diagnose or treat any condition. If you are in crisis or struggling with your mental health, please contact a qualified professional or your local emergency service.
Subscriptions are billed through the App Store or Google Play, so they are cancelled in your store account settings — Subscriptions on iOS, or Payments and subscriptions on Google Play. Cancelling stops future renewals, and Pro stays active until the end of the period you have already paid for. The terms of use cover the billing rules in full.
Inner Citadel runs on iPhone and iPad through the App Store, and on Android phones and tablets through Google Play. Journal entries and streaks synchronise between your devices when you sign in with the same account.
Direct support
No chatbots and no outsourced call centre. Every inquiry is read and answered by the people who actually build Inner Citadel.
Response time: we review incoming messages daily and usually reply within 24 to 48 hours. If your question involves subscription or sync trouble, include the email or User ID on your Citadel account so we can find it quickly.
