macOS · AI file renaming
Rename files in bulk with AI
Simple and fast
Nymos reads your documents, invoices, photos, PDFs and more. Get your MacBook organized and clean.
- 60 documents free
- No account, no credit card
- Review first, nothing renames itself
It reads. It suggests. You approve.
One file, from drop to done. nymos never renames anything on its own: every suggestion waits for your approval.
invoice.pdf -
Reads the document
Not the filename. The content itself, with built-in OCR for scans.
- Vendor
- Brightway Movers Ltd
- Date
- 2025-01-14
- Subject
- Transport Dublin Cork
- Amount
- 99.70 EUR
-
Suggests one name
Every field it found, in the order your template sets.
2025-01-14 - Brightway Movers Ltd - Transport Dublin Cork - 99.70 EUR.pdf -
You approve
Nothing is renamed until you say so. Edit it inline, apply one, or apply the batch.
Suggested Rename All
Filenames, before and after.
Straight from one real batch: nymos suggestions, unedited.
-
invoice.pdf2025-01-14 - Brightway Movers Ltd - Transport Dublin Cork - 99.70 EUR.pdf -
receipt boots.pdf2025-08-22 - Boots - NAIF Sunscreen Cream Baby - 24.00 EUR.pdf -
2323jdkdkf unknown.csv2023-08-09 - Arranging business insurance - Content guide.csv -
Screenshot 2026-03-26 at 13.59.10.pngCow grazing by river with trees.png
Built for messy folders.
Everything in nymos serves one goal: files you can find back, and a Mac that stays orderly without you doing the filing.
-
Reads the file itself
38 file types, read by content: PDFs with built-in OCR, Office, photos, text and more.
scan_2847.pdf → 2026-03-14_invoice_acme_hosting.pdf -
Templates
Invoice, Receipt, Document and Contract built in. Or design your own, with live preview.
{date}_{type}_{vendor}_{amount} -
Watch folder
New arrivals are analyzed and suggested automatically. Never renamed without you.
Downloads → suggested, waiting for your review -
Undo, history & recovery
Every rename tracked and revertible. ⌘Z undoes the last one.
⌘Z → back to IMG_4021.heic -
Any language
Each file is named in the language it's written in: a factuur stays Dutch, a Rechnung stays German. Or fix every filename to English, Dutch or Spanish.
App in English · each file in its own language -
Fast batches
Suggestions run concurrently. A folder of PDFs is named in seconds.
12 PDFs → named while you pour coffee
Works the way you need it to
Managed by nymos 
OpenAI Soon 
Claude Soon 
Gemini Soon more follow soon One app. Two ways to run it.
Let us run the AI, or bring your own key and keep everything in your own hands.
Nymos
Managed
No setup, no API key. Install and rename.
$9 /month
Cancel anytime.
- Free trial: 60 documents, no account, no credit card
- All updates included
- Every feature included, at every volume
Your AI provider
Self-managed
Your own API key.
Coming soon
You pay your AI provider directly. Our servers are never involved.
- The full app, nothing held back
- In-app trial: 60 documents, no card
- Use your own AI provider key
Purchases are processed by Polar.sh as merchant of record. By purchasing you agree to our terms and Polar's checkout buyer terms.
Testimonials
Real people, real folders.
My Downloads folder went from four hundred cryptic PDFs to something I can actually search. The review step is what sold me: nothing happens without my OK.
It reads the scans too. My whole admin folder finally has real names.
App in English, filenames in Spanish. Exactly what my bookkeeping needed.
Private by design.
nymos sends a document's content directly from your Mac for analysis, and nothing else. No analytics, no tracking, no telemetry in the app.
No permanent storage
Content is processed to suggest a name, then discarded. Nothing is kept on our servers.
No model training
Your documents are never used to train AI models. Not ours, not anyone's.
EU-routed & never logged
Requests pass through our relay in Amsterdam, which never stores and never logs content. It forwards, and forgets.
Good questions.
The short answers. The long ones live in the docs.
What does nymos actually do?
It reads what is inside a file, not the old filename, and suggests a clear, consistent name in the file's own language. You review every suggestion and apply it per file or all at once.
Which file types can it read?
PDFs (including scans, with built-in OCR), Word, Excel, PowerPoint, iPhone photos (HEIC), plain text, Markdown and CSV.
Which Macs does it run on?
nymos is a native Mac app for macOS 14 (Sonoma) and newer. There is no Windows or mobile version.
Will it ever rename something by itself?
No. Nothing is ever renamed automatically. Even the watch folder only prepares suggestions that wait for your review.
Does it move my files or change my folders?
No. A file is renamed right where it lives. nymos never moves, copies or reorganizes anything, so your folder structure stays exactly as you left it.
Which languages does it speak?
By default each file is named in its own language, read from the content, so a factuur stays Dutch and a Rechnung stays German. Prefer one language for everything? Fix filenames to English, Dutch or Spanish. The app's interface language is a separate setting either way.
What happens to my documents?
A document's content is sent for analysis and nothing else: never stored, never logged, never used to train AI models.
What will it cost?
A managed subscription that works out of the box, no setup and no API key, starting at $9 a month for 400 renamed documents. Bigger plans are on the slider above, and annual billing gives you two months free. The trial is 60 documents free, with a week to use them, no account needed.
Do I need an account or an API key?
Neither. The trial asks for no account, no email and no credit card, and the managed subscription needs no API key: install, subscribe in the app, rename. Bringing your own provider key is coming later.
What happens after the 60 free documents?
Everything you renamed stays renamed, and your history, undo and templates keep working. To get new suggestions, you pick a subscription inside the app.
Can I undo a rename?
Always. Every rename lands in a day-grouped history where you can revert it, or hit ⌘Z for the last one.