A diary for your most neglected sense.

Journal the smells you want to keep. Train your nose on what is already in your kitchen. Track what is on your shelf and how often you actually reach for it.

Get it on Google Play

Free and complete. No account, no subscription, and no internet permission at all.

You have ten thousand photographs and not one smell.

Smell is the sense wired straight into memory's basement. One molecule of a stranger's perfume on a train and you are, involuntarily, in a hallway in 1998. We built whole industries for documenting what we see and hear, and almost nothing for the sense that time travels.

The entry screen: what you smelled, note tags drawn from the lexicon, an eight-part emotion wheel with Joy selected, and the place and people fields.

You cannot record a smell. You can encode one.

A photograph does the remembering for you. A smell will not sit still for that, so Sillage asks for the next best thing: one sentence of comparison, written while you can still smell it. Articulating a smell is what files it somewhere you can find it again.

The app teaches this without lecturing. The anchor field hands you a sentence shape, and a different one every time you ask.

It is like ____, but ____
Closest thing: ____. Wrong because ____
Nine parts ____, one part ____
It smells the way ____ sounds

Training that fits in a kitchen cupboard

Thirty eight sessions across two tracks, from four minutes to twelve. Foundations works on four things you already own: coffee, a lemon, cloves and mint. The Pantry Conservatory then takes eight shelves of your own kitchen, four jars at a time, and widens to eight.

A blind identification round: jar six of eight, a shortlist of the materials still unnamed, and the jars already named or missed listed underneath. — **Blind, and honestly scored.** You shuffle the jars and you mark yourself, because the app cannot smell anything. It says so on the screen, and the number means what it says.

The skill dashboard: an accuracy curve across sixteen scored sessions, a vocabulary growth chart, and a memory span figure of ninety seconds. — **Your nose, charted.** Identification accuracy over time, how many words you own out of 352, the longest gap you have carried a smell across, and which shelf keeps beating you.

The lexicon card for indolic: what it is, where you meet it, nearby cards, and the journal entry where the word was used. — **Words for what you smell.** Every miss points at a card. Every card you use becomes one of your words, and your vocabulary is drawn as a curve like everything else.

Your shelf, and what you actually wear

Bottles, decants and samples, with the notes, the sillage, the seasons and a three line take: opening, heart, drydown. One tap logs a wear, and about a fortnight later the numbers start telling you things about yourself that you would have denied.

Reach for

what share of your wears each bottle takes

Per wear

what it has cost you every time you put it on

By month

the seasons a bottle turns out to belong to

The back

unworn for months, and worth a decision

Every bottle is drawn in code from its own name and notes, which is why the shelf looks like a shelf without the app ever asking for your camera.

The Shelf screen: nine drawn bottles in a grid with wear counts, a row of statistics, and a strip showing wears by month.

352 cards, fifteen families, one personal concordance

The lexicon is the connective tissue. Tag an entry with a note and the word is yours. Write it into a sentence and it is yours too. Each card lists every entry and every bottle where it turns up, which makes it a map of your own nose rather than a glossary.

The Animalic Cellar

Costus

Wet hair, wet dog, coconut and violet. Genuinely strange, and restricted for allergy reasons.

The smell people mean when they say a fragrance smells like scalp.

The Citrus Grove peel oils and pith
The Green Bench sap, stem, crushed leaf
The White Flowers sweetness with a shadow
The Flower Room rose, violet, iris
The Orchard flesh rather than peel
The Spice Drawer warm and cold spices
The Timber Yard heartwood and sawdust
The Resin Bench what a tree bleeds
The Animalic Cellar leather, skin, fur
Musk and Powder the quiet half
The Sweet Kitchen perfume that smells edible
Earth and Stone soil, root, flint
Air, Salt, Water ozone and rain
Smoke and Fire tar, birch, incense
Words of the Craft the vocabulary itself

Architecture, not a promise

What Sillage cannot do

Reach the internet

The app does not request the INTERNET permission, so Android will not let it open a connection even by accident. You can check that on the Play listing before you install. No account, no sync, no analytics, no crash reporter, no advertising identifier.

Take a photograph

There is no camera permission and no photo picker. Every bottle on your shelf is drawn from its own name and notes, which is a better looking shelf than most people's camera roll and costs you nothing.

Decode a batch code

Decoding needs a brand by brand database that nobody outside those brands can verify. Shipping a half correct one would be worse than not shipping it, so the feature is absent and this paragraph exists instead.

Know the weather

Rain triggered resurfacing needed a live forecast, and a forecast needs a network. Old entries come back by anniversary and by the same week of the year, which turns out to be most of what made the idea good.

Treat anything

The drills are written as skill practice, in the same spirit as ear training or wine tasting. Sillage makes no medical claim. If your sense of smell has changed suddenly, that is a conversation for a doctor and not for an app.

Weird, uncontested, and the only app your nose has ever had.

Get it on Google Play

What is deliberately not here. No community, no shelf sharing and no clubs: those need a server, and a server needs an account. No photographs, for the permission reason above. Backup is a plain JSON or CSV export written to your Downloads folder, not an encrypted archive, so keep it where you would keep a diary. English only. And no paid tier of any kind: every entry, every bottle, every session and all 352 cards are free.