Obsidian Alternative Without a Monthly Subscription

The Real Cost of "Free" Obsidian

Obsidian itself is free to download. The catch is Obsidian Sync, the official cross-device sync service. It runs $4 per month or $48 per year — not because moving plain text files is expensive, but because that is how the company funds the project.

The math, if you stay subscribed:

• 1 year — $48
• 3 years — $144
• 5 years — $240
• 10 years — $480

For text files. That you already own. That live in a folder.

If that math bothers you, there is a cleaner alternative: a one-time-pay markdown editor plus a free peer-to-peer sync stack. Total spend: $9.99 once, then nothing — ever. This article walks through exactly how to set it up on Mac and iPhone.

What Obsidian Actually Is — and Why It Is Replaceable

Strip away the marketing and Obsidian is two things:

1. A markdown editor with live preview, wikilinks, tags, and a graph view.
2. A vault — which is just a folder of .md files on your disk.

That is it. There is no proprietary database and no cloud-only data. The vault is yours. You can open it in TextEdit, in VS Code, or in any markdown app on the App Store. Anything that does the editing job and reads the same folder is a drop-in alternative.

The lock-in is not the file format. The lock-in is the sync.

The Replacement Stack

Three pieces. You pay for one of them, once. The other two are free.

Total: $9.99, once. No subscriptions on any layer, and the app license covers iPhone, iPad, Mac, and Vision Pro.

Step 1 — Pick a Markdown Editor That Reads Folders

The editor has to do two things to feel Obsidian-like:

1. Open any folder you point it at as a vault.
2. Render markdown live, including wikilinks, tags, and a graph view of how your notes connect.

[Markdown Notes by GradFlowLab](/en/apps/markdown-notes) does exactly this on iPhone, iPad, Mac, and Vision Pro:

• Vault system — point it at any folder and that becomes your workspace. Multiple vaults supported.
• Live syntax highlighting plus real-time preview — headings, lists, code blocks, tables, and KaTeX math.
• Graph view — see how your notes link to each other, the same primitive Obsidian made famous.
• Tags and daily notes — the same organizational mechanics carry over.
• Export to HTML, PDF, or plain Markdown — your files come out the same shape they went in.
• No account, no telemetry, no subscription — $9.99 once, and the same purchase covers iPhone, iPad, Mac, and Vision Pro.

Because it reads plain .md files, you can drop an existing Obsidian vault straight in. Wikilinks in the form of double brackets keep working. Tags keep working. Folder structure is preserved verbatim.

Step 2 — Install Syncthing on Your Mac

Syncthing is open-source, free, and end-to-end encrypted between your devices. It does not run through a cloud — your Mac talks directly to your iPhone, your other Mac, your home server, or any device you authorize.

The fastest install on macOS uses Homebrew:

1. Install — run brew install syncthing in Terminal.
2. Start the service — run brew services start syncthing.
3. Open the web UI at http://localhost:8384 in your browser.
4. Add a folder. Point it at where you want your notes to live, for example ~/Documents/Notes. Give it a label like notes-vault.
5. Note the device ID at the top right of the web UI. You will need it on the iPhone.

That is the whole setup on Mac. Syncthing keeps that folder in sync with any other device that shares the same folder ID, and it does so peer-to-peer with no third-party server in the middle.

Step 3 — Install Möbius Sync on Your iPhone

Apple does not allow Syncthing itself in the App Store — Syncthing needs to run continuously in the background, and Apple restricts that. The community solution is Möbius Sync, a free Syncthing-compatible iOS client. It runs Syncthing inside the iOS allowed background-fetch window and is the de-facto way to sync a folder of files between Mac and iPhone without going through iCloud or Dropbox. The free tier is enough for a personal notes vault — there is nothing to upgrade.

Setup on iPhone:

1. Install Möbius Sync from the App Store.
2. Open the app, go to Devices, then Add Device, and paste your Mac's device ID.
3. On the Mac, accept the incoming device pairing request when it appears.
4. On the Mac, open the folder settings and share the notes folder with the iPhone as a receiver.
5. On the iPhone, accept the folder share. Pick a local path inside the Möbius Sync sandbox to store the files.

The folder now lives on both devices. Edit on either side and changes propagate when both apps are reachable. When offline, Syncthing queues changes and resolves them as soon as the devices see each other again.

Step 4 — Point Markdown Notes at the Synced Folder

On macOS:

1. Open Markdown Notes.
2. Choose Open Vault.
3. Select ~/Documents/Notes — the same folder Syncthing is watching.

On iPhone:

1. Möbius Sync exposes its synced folder via the iOS Files app under its provider.
2. Open Markdown Notes, choose Open Vault, and browse to the Möbius Sync folder.
3. Pick the same notes folder on the iPhone side.

Both apps now see the same .md files. Edits made on the iPhone show up on the Mac, and vice-versa, within seconds when both devices are online — and Syncthing queues changes when offline, so a flight or a tunnel does not break anything. Your notes are simply a folder on disk, mirrored between the devices you trust.

What You Keep From the Obsidian Experience

• Plain .md files on disk — fully portable, openable in any other markdown tool you ever migrate to.
• Wikilinks between notes for fast cross-referencing.
• Tag-based browsing for organic organization.
• A graph view to see how notes connect.
• Daily notes, folder browsing, and full-text search.
• Multiple vaults for keeping work, personal, and project notes separate.
• Real-time preview with code blocks, tables, and math.

What Is Different — Be Honest

• No plugin ecosystem. Obsidian has a huge community plugin market. Markdown Notes does not. If your workflow depends on Dataview, Templater, or community themes, this approach will not replace that.
• No first-party web clipper. Obsidian has browser extensions that drop pages into your vault. With this setup you save links into a daily note manually or via the iOS Share Sheet.
• Mobile sync at large scale. Syncthing on iOS is reliable for personal-vault sizes — thousands of notes, hundreds of megabytes. It is not optimized for very large media-heavy vaults with gigabytes of attachments.

If those are dealbreakers for you, stay on Obsidian Sync. If they are not, you have just bought back $48 per year, forever.

Five-Year Cost Comparison

You own the editor. You own the sync layer. Your notes never leave the devices you control.

Why This Setup Beats Cloud-Backed Alternatives

The usual fallback to Obsidian Sync is dropping the vault into iCloud Drive or Dropbox. That works — until it doesn't:

• iCloud Drive silently evicts files to save local storage, which has bitten Obsidian users for years. A note "exists" in the cloud but the editor cannot open it offline.
• Dropbox requires a subscription past the free tier, and the macOS client is heavier than Syncthing.
• Both route every file through a corporate server. For private notes that is a non-trivial trust ask.

Syncthing avoids the eviction problem because the files are physically present on every device. It avoids the trust problem because no third party ever sees the bytes. It is the architecturally correct answer for a vault of personal text.

Migrating an Existing Obsidian Vault

If you already have an Obsidian vault, the migration is mechanical:

1. Quit Obsidian on every device.
2. Move (or copy) the vault folder into the location Syncthing is watching, for example ~/Documents/Notes.
3. Let Syncthing replicate the folder to your iPhone via Möbius Sync.
4. Open Markdown Notes on the Mac and choose that folder as your vault.
5. Open Markdown Notes on the iPhone and choose the synced copy of that folder as your vault.

Wikilinks, tags, daily notes, and folder structure all carry over because they were never proprietary in the first place. You can leave Obsidian installed alongside Markdown Notes and use both against the same folder while you decide.

Get Started Today

1. Buy [Markdown Notes](https://apps.apple.com/us/app/markdown-notes-simple/id6761522003) on the App Store — $9.99, works on iPhone, iPad, Mac, and Vision Pro on a single purchase.
2. Install Syncthing on your Mac with brew install syncthing and start it with brew services start syncthing.
3. Install Möbius Sync on your iPhone from the App Store.
4. Pair the devices, share the notes folder, and open it as a vault in Markdown Notes on both sides.

That is the whole stack. No subscriptions. No cloud account. Plain text files in a folder, synced peer-to-peer, edited in an app you bought once and own forever.