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Seis mobile banking app

Case Study

Seis

Seis was a mobile banking platform for Spanish speakers. We designed and developed the mobile app, brand, physical collateral, and web presence across a multi-year partnership.

Updated October 2026

In the numbers

The results

$10M
Annual recurring revenue, reached within 16 months of launch
$500M+
Annual card spend, across more than 500,000 customers
4.9
App Store rating across more than 97,000 reviews

In the details

The highlights

Brand, app, and website for Spanish speakers

1,900+ hours

Seis closed in early 2026

Seis brand and app imagery
Seis
The Seis app offers rewards for referring friends to join Seis

The short version

For Seis, a mobile banking platform built for Spanish speakers, HQ created the brand identity, then designed and developed the iOS and Android app and the marketing website that went with it, across more than 1,900 hours over a multi-year partnership. The Seis app let customers manage debit and credit cards and send instant transfers with no fees. The app also included a credit-building program and savings vaults for specific goals. Customers signed up with a phone number and a code sent by text, so opening an account never required an email address. Seis reached $10 million in annual recurring revenue within 16 months of launch. The app grew to more than 500,000 customers spending more than $500 million a year on their cards, and it held a 4.9 rating across more than 97,000 App Store reviews. Seis closed in early 2026.

A laptop and two phones show the Seis marketing site and Instagram story campaigns

1) The brand

The brand guide explains the Seis mission, typography, color palette, and more

Seis was built around a clear mission: helping individuals and families pursue their version of the American dream. Their brand embodies financial access, trust, and community support, offering inclusive solutions designed to help their customers thrive. To bring that vision to life, we partnered with the Seis team in a hands-on brand workshop where we explored colors, type, and visual directions aligned to their three core pillars:

  • Access, “Don’t make me think.” Everything should feel tighter, faster, easier. Seis creates access by designing financial tools in ways customers can’t get anywhere else.
  • Guidance, “Seis has entered the group chat.” The brand centers on human connection, mirroring how customers rely on friends, family, and community for support. Seis builds trust through warm, conversational interactions and 1:1 guidance.
  • Legit, real-deal credibility. Seis is a destination, not a stepping-stone, and the brand reflects that through confident design, voice, and product positioning.

With those pillars in mind, we developed a fresh, modern color palette anchored in Seis’s signature blue and white, accented with mint, green, yellow, and pink for moments of contrast and personality. We paired it with Poppins, a rounded, friendly typeface that delivers warmth and inclusivity while remaining highly legible across devices and languages.

The Seis brand embodies financial access, trust, and community support

The visual identity brings Seis’s core pillars to life across color, type, and design, offering inclusive solutions designed to help their customers thrive.

Once the brand direction was established, we created a complete visual system, defining primary and secondary logos, designing debit and credit card treatments, and translating the new identity into a cohesive marketing website that fully captures the heart of the Seis brand.

2) The app

Four phone screens show the Seis app homepage, money transfer, cash deposit map, and SeisMobile plan options

The Seis mobile app brings the brand’s mission into everyday life with a fast, intuitive banking experience on both iOS and Android. With 97,000+ reviews and a 4.9-star rating, it became a trusted financial tool for the Seis community. The app allows customers to easily manage their money and cards, bringing essential banking features together in one interface. Key capabilities include:

  • Credit and debit management with clear visibility into balances and transactions
  • Cash advance options for short-term flexibility
  • A cash deposit map to quickly locate nearby deposit partners
  • A credit-building program designed to help users strengthen their financial profile
  • Instant, no-fee transfers to friends and family within the app
  • Easy direct deposit setup for faster access to paychecks
  • Vaults, simple savings buckets for specific goals

The result is a clear, approachable banking app designed to give customers more access, more guidance, and more control over their financial lives.

3) The physical collateral

A set of posters designed for display in the Seis office highlight three of the team's values

Physical merchandise isn’t our usual focus, but we’re always happy to jump in when the project calls for it. For Seis, we designed everything from shirts, jerseys, socks, and hats to posters, booth displays, and specialty stickers, mostly for special events or internal teams.

These projects let us extend our creative approach, creating fun, memorable pieces that complement the broader brand experience we’ve built together. Even outside our usual run of work, it’s another way we help Seis bring their brand to life.

Big ideas across every touchpoint, digital and physical.

Whether it’s branding, app development, or merch, our long-standing partnership with Seis showed how a collaborative approach brings brands to life at every stage of growth.

A recent sticker set designed for Seis's internal teams includes the brand values and novelty stickers representing team inside jokes

4) How did customers sign up without an email address?

Seis authenticated by phone number. Someone opened an account by entering their number and receiving a code by text, then set a password afterwards. For a customer who may not have an email address they check, or any at all, that removed the first thing that usually stops a signup.

Sessions were built around the same reality. A short-lived token carried the session, and the app held onto the customer instead of sending them back through the text message flow every time they opened it.

5) Two languages, and a bank’s approval

The site ran in Spanish with English alongside it, each with its own product pages rather than a translation layer bolted on top.

Because Seis was a financial product, page changes did not simply go live. Copy moved from draft into a staging link the team sent to their bank partners for review, and it published once that came back approved. We built the workflow to match how they already had to work.

Frequently asked questions

The Seis app reached more than 500,000 customers and earned more than 97,000 App Store reviews with an average rating of 4.9 stars. Seis was built for Spanish speakers pursuing financial inclusion, a market historically underserved by mainstream banking products. The app's features (instant peer-to-peer transfers, a credit-building program, cash advance, and savings vaults) were designed around how the Seis community actually managed money. HQ contributed more than 1,900 hours across design and development on the app, brand, and marketing site over the course of the partnership. Seis closed in early 2026 after several years of operation.

Seis was a mobile banking platform designed specifically for Spanish speakers, built around three brand pillars: access, guidance, and credibility. Access meant making banking faster and easier than anything customers could get elsewhere, removing friction from every interaction. Guidance meant centering the experience on human connection, with warm and conversational interactions that reflected how the Seis community relied on family and friends for financial support. Credibility meant building a product that felt like a destination rather than a stepping stone, with confident design and positioning that reflected long-term financial inclusion. HQ developed the Seis brand identity from a hands-on workshop through to a complete visual system, a paired color palette anchored in Seis blue and white with mint, green, yellow, and pink accents, and Poppins as the primary typeface for its warmth and legibility across both English and Spanish.

Elizabeth Waite

“The way you've handled this is such a testament to why HQ is so damn good.”

Elizabeth Waite

CMO, Collegewise

Randall Bennett

“This team is insanely reliable.”

Randall Bennett

Facebook

Hayden Hill

“These are my favorite vendors.”

Hayden Hill

CMO, Christensen Institute

Austen Allred

“As a way to get to a phenomenal product, hiring this team is the best way to go. Overall we're 1000% pleased.”

Austen Allred

CEO, GauntletAI

Shobin Uralil

“There's no doubt in my mind that we picked the right partner in HQ to help us with this.”

Shobin Uralil

CMO, Lively

Jeff Allen

“If I'm not your happiest customer, I'm willing to fight whoever thinks they are for that title.”

Jeff Allen

CEO, BlueCar

Jeron Paul

“We feel like HQ has been our secret weapon.”

Jeron Paul

CEO, Spiff (acq. by Salesforce)

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