# Cusp Guidelines

> A health and longevity app that reads your training, food, sleep, labs and medicines together, in Arabic or English.

Source: https://plumage.studio/work/cusp
Last updated: 2026-11-10

Brand system by Plumage for the founder's Cusp. The mark and the website are the founder's design. Part of [Our work](https://plumage.studio/work) by [Plumage](https://plumage.studio).

Tagline: "Health, moving forward."

## Introduction

Cusp is a health and longevity app, in beta on iPhone. One record holds your training, food, sleep, wearable data, lab reports and medicines, and Cusp reads them together, in Arabic or English. Every lab marker is read twice, against the lab’s range and a longevity-optimal one. Three agents, Everyday, Clinical and Pro, answer from the same record and show what they read; nothing changes without your tap, and you can share the record with a coach, a doctor or family and take it back. It never diagnoses.

The mark and the website are the founder’s. The mark is redrawn smooth from the site’s own file, not redesigned, and the colour, type and voice are taken from cusp.bio first, so the logo and the site are one brand.

Cusp should feel like the calm friend who has read everything about you and says only what matters this morning. The mark is a curve at the moment it turns, so every surface pairs one honest number with one next step, and leaves the decision to you.

## Marks

The mark comes first and the word follows it, at the spacing cusp.bio’s header uses. Use the lockup wherever there is room; the mark alone for the app icon, the profile picture and the favicon. The mark is the indigo-to-amber gradient, running left to right, or one solid colour. In Arabic the order flips: the word, set in Alexandria, reads first from the right.

## Colour

- **Mist** #F5F6F8: The page ground of cusp.bio (its background colour).
- **Paper** #FFFFFF: Cards and surfaces on cusp.bio.
- **Ink** #111214: Headlines, the wordmark, black pill buttons (cusp.bio’s foreground colour).
- **Slate** #5E6168: Body text (cusp.bio’s muted colour).
- **Night** #0B0B10: Dark sections and the footer.
- **Indigo** #2A2AA4: The mark’s start; the Everyday agent.
- **Violet** #9C3F9E: The mark’s middle; agent sections.
- **Coral** #EE5B6D: The mark’s warm turn; the Clinical agent and out-of-range markers.
- **Amber** #FF9027: The mark’s tip; the Pro agent.
- **Deep** #1C1B5C: The deep indigo of the agent and privacy sections.

## Type

- **Geist**: Everything on cusp.bio: semibold 600 at 88 px with −3.96 px tracking for the hero, 56 px for sections, 19 px body in Slate. By Vercel, SIL Open Font License 1.1.
- **Fraunces Italic**: One accent word per headline, as on cusp.bio (“read twice.”, “all of you.”). By Undercase Type, SIL Open Font License 1.1.
- **Alexandria**: Arabic, as on cusp.bio/ar, where it also sets the word Cusp. By Mohamed Gaber, SIL Open Font License 1.1.

## Voice

Cusp speaks as cusp.bio already does: plain, exact and calm, in short sentences, with the reason shown. It never diagnoses and always asks first.

Every number is read against the person’s own baseline and range, every answer names what it read, and every change waits for a tap.

## Website

The live site: [cusp.bio](https://cusp.bio)

## On the page

Foundation, Marks, Colour, Type, Voice, Applications, Website, Exports. The logo files, colours and fonts can be downloaded from the page's Exports section.

## Want a brand like this one?

- Email: [hello@plumage.studio](mailto:hello@plumage.studio)
- Book a 15-minute call (no commitment): https://cal.com/plumage/15min
- Send a message on Telegram: https://t.me/TheAkramovic
- Akramovic replies within one working day.