Custos
Keeper of Scent — your private collection.
A free fragrance collection tracker and wear log, for serious collectors of 4 bottles or 4,000.
Custos keeps a fragrance collection properly: what you own, what you wore, what deserves a rest, and what to wear today — decided from your own shelf, not somebody else's.
Custos reads the day on its own — live weather, season, and occasion — and picks from your bottles, with the reasoning shown. No forms to fill out, no filters to set. Open it and the answer is waiting.
Most apps push you to log more and buy more. Custos tells you when a bottle has rested long enough to wear again — and when it hasn't. You tune the rest logic; your rotation stays even and deliberate. Every wear you log updates the picture — what's rested, what's overdue, what fits tonight. Custos doesn't guess your rotation; it keeps it.
Custos suggests layering pairs from bottles you own and explains each one: a simple fragrance completing a complex one, or two scents with enough shared ground to blend — and not so much that nothing new happens. A suggestion with an argument, not a shuffle.
No grades, no report cards. Custos names your collection's gaps — borderline, minor, or true — and explains each, so the next bottle is different from the last one on purpose.
2,492 fragrances — and counting. Each one human-reviewed, alias-resolved, and classified by structure, instead of 70,000 scraped rows. Missing a bottle? Add it and wear it tonight; review gates the shared catalog, never you.
Bulk-import from a spreadsheet with the fill-in template — already have your collection listed somewhere? Hand that list to an AI assistant and let it fill the template for you in minutes. Or add a bottle at a time.
It lives in your account, visible only to you. Export all of it as CSV or JSON whenever you want — no lock-in. No ads, no affiliate links, no subscription — and your collection is nobody's training data.
Free. No subscription. No ads. No streaks, roasts, or judgments.
Create a free account above — runs in your phone's browser, nothing to install.
Yes. No subscription, no ads, no affiliate links, no locked features. The Terms of Use say so in plain English, and the operating costs are small and operator-funded.
It assesses each bottle you own for the day's live weather, season, and occasion — and how recently you've worn it — then ranks them and shows why each one made the list. Tap "Why this?" on any pick for the full reasoning.
Yes — download the fill-in Excel template and import your whole collection in one pass.
Add it yourself and use it in your collection immediately. A human reviews it before it joins the shared catalog — but the review never makes you wait.
Wearing two scents together so they read as one richer composition. Custos suggests pairs from your own bottles and explains what each combination adds.