Build perfume formulas the modern way.
Free fragrance formulation software for hobby perfumers. Write formulas in percentages, version every iteration, scale to any batch and catch IFRA issues before you weigh. Runs in your browser.
Free forever · Web, iOS & Android · No install
Write each ingredient as an active % of the concentrate. The software handles the dilution math so the bench weights are always right.
Duplicate a formula, tweak one note, save as v2. Compare versions side by side instead of digging through notebook pages.
Add a material once with supplier, dilution and IFRA limit reuse it across every formula you build.
Flags any formula where an ingredient exceeds its safe percentage in fine fragrance before you produce.
Works on Mac, Windows, iPhone and Android. No install, no Apple-only lock-in. Your formulas sync across devices.
Replaces the Excel sheet most hobby perfumers fight with. Saved formulas double as a built-in calculator.
How perfumers use Scent Inventory
- 01Catalogue your raw materials
Name, supplier, working dilution and IFRA Cat 4 limit. Once entered, every material is reusable across every formula.
- 02Compose a formula
Add materials and type the active % you want for each. The software auto-balances with diluent and flags IFRA breaches in real time.
- 03Version, scale, produce
Save iterations as new versions. Enter a target batch size and get a weigh-list in grams of the diluted stock you actually have on the bench.
Why not Formulair?
The most-cited alternative is iOS & Mac only. Here's the practical difference.
- Native iOS & Mac app only
- No Android, no Windows, no web
- Tied to the App Store
- No browser sync
- Runs in any browser
- Mac, Windows, iPhone, Android
- Syncs across every device you use
- Free forever, no install
Frequently asked
Start your first formula
Free account, all features included. Your formulas stay yours.
Also looking for a quick calculator? Try the fragrance calculator.