phenyl for iPhone

A calm instrument for building perfume formulas.

A formula sheet for perfumers. Weigh each material in grams at the dilution you use, and phenyl works out % pure and % weighed as you type.

Download on the App Store

Free for up to 25 formulas.

The Bench Cologne formula sheet: 12 materials, each with its dilution, grams and % pure, totalling 100.00 g at 96.0% concentration.

try the maths

Change a row and watch the shares move.

Four sample materials. Set the grams and the dilution; % pure and % weighed update the way they do in phenyl.

materialdilg% pure% weighed
100%100%28.00057.7352.83
100%100%15.00030.9328.30
100%100%5.00010.319.43
in DPG10%10%5.0001.039.43
total53.00 g
concentration91.5%

Pure grams are the grams times the dilution; solvents count as zero.

% pure is a row's share of the pure total. % weighed is its share of the grams weighed out.

Concentration is the pure total divided by the weighed total.

what it does

Everything a formula sheet needs, and nothing it doesn't.

The formulas list: a sample library of six formulas, each row with its material count, date and a strip of family-coloured bars, under a line noting one new formula and one mod this week.

  1. 01formulas

    Every material in grams, at the dilution you use.

    Each row is a material, the grams you weigh out and the dilution you weigh it at. phenyl works out the share of pure material and the share of the weighed concentrate as you type.

    • Grams to three decimals, at any dilution.
    The formulas list: a sample library of six formulas, each row with its material count, date and a strip of family-coloured bars, under a line noting one new formula and one mod this week.

  2. 02accords and scale

    Accords that behave like one material.

    Group materials into accords and set an accord's total like a single material.

    • Scale a formula to any batch size.
    The Bench Cologne formula sheet: 12 materials, each with its dilution, grams and % pure, totalling 100.00 g at 96.0% concentration.

  3. 03mods and versions

    Change a copy, keep the original.

    A mod is a copy of a formula you can change and compare against the original.

    • Versions record a formula as it was, with a summary of what changed.
    The formulas list: a sample library of six formulas, each row with its material count, date and a strip of family-coloured bars, under a line noting one new formula and one mod this week.

  4. 04checks

    IFRA, at the concentration you set.

    The IFRA check flags any material over its limit in the finished product, at the concentration you set. It is free for everyone.

    • Members also get the other checks: your usual range for each material, the balance of top, heart and base, and what's in stock.
    The checks page for a formula at 20% in an EDP: oakmoss absolute is flagged over its IFRA limit in the product, with the change that would fix it.

  5. 05materials

    Your own materials list.

    Keep the materials you work with, with dilutions, stock, cost and notes.

    • Import .scent, CSV and PDF formula files.
    The Iso E Super material page: used in six of six sample formulas at 12% pure on average, most often with bergamot oil FCF and Hedione.

private by design

Data Not Collected.

That is phenyl's App Store privacy label. The app has no analytics or advertising, and nothing is uploaded to us.

read the privacy policy

  1. No account, no sign-in.
  2. Your library stays on your iPhone and works offline.
  3. Back it up to Files, iCloud Drive, Google Drive or Dropbox, and restore it on another phone.
  4. Import .scent, CSV and PDF formula files.

pricing

Free for up to 25 formulas.

free

free

  • Up to 25 formulas.
  • The IFRA check.
  • Import .scent, CSV and PDF formula files.

membership

$24.99 a year

14-day free trial

  • Unlimited formulas.
  • PDF, print and export: .scent, CSV, lab sheet, batch card.
  • Every check: your usual range for each material, the balance of top, heart and base, and what's in stock.
  • $24.99 a year with a 14-day free trial; renews yearly until cancelled.
  • Cancel in Settings at least 24 hours before renewal.
  • Membership is bought through Apple.

If membership ends, nothing is hidden or deleted.

questions

Questions, answered plainly.

Do I need an account?

No. No account, no sign-in. Your library is stored on your iPhone.

Does it work offline?

Yes. Everything is stored on your iPhone, so formulas open and calculate without a connection.

What do % pure and % weighed mean?

% weighed is each material's share of the grams you weighed out. % pure is its share of the pure material, after taking each dilution into account (solvents count as zero). Concentration is the pure total divided by the weighed total.

What is free?

Up to 25 formulas, and the IFRA check, which flags any material over its limit in the finished product at the concentration you set.

What does membership add?

Unlimited formulas, PDF, print and export (.scent, CSV, lab sheet, batch card), and every check: your usual range for each material, the balance of top, heart and base, and what's in stock.

How much is membership?

$24.99 a year with a 14-day free trial. It renews yearly until cancelled; cancel in Settings at least 24 hours before renewal.

What happens if membership ends?

Nothing is hidden or deleted. You keep the free tier, and everything you made stays openable and editable.

How do I move to a new phone?

In phenyl, open You and tap Back up library, then save the file to Files, iCloud Drive or another service you trust. On the new phone, install phenyl, open You, tap Restore library and choose that file. Then tap Restore purchases to bring membership across.

Can I bring in formulas I already have?

Yes. phenyl imports .scent, CSV and PDF formula files.

Weigh your next formula in phenyl.

Free for up to 25 formulas. On iPhone.

Download on the App Store