Solid Foundation SoftwareGet in touch

Solid Foundation Software

Good
ideas.
Built
right.

We turn everyday challenges into thoughtfully built apps. Useful tools, clear design, and the details that make software feel right.

Explore our apps Meet the studio
iPhone
iPad
Mac
Apple TV
Apple Watch

PoshPromo · Listing design

PoshPromo

Give your next sale
a look of its own.

Create a consistent look across your Poshmark listings. Choose a promo, customize the design, and preview every cover before you apply it. When the sale ends, restore your originals.

Download PoshPromo Learn more
PoshPromo home screen with active sale promos, listing previews, and a sale reminder.

  • A consistent look

    Bring your listings together with branded promo covers.

  • Less repetition

    Apply a campaign across selected listings in one go.

  • Preview first

    See the changes before they reach your closet.

  • Keep your originals

    Restore your covers when the campaign is over.

Seller Insight · Sales & inventory

Seller Insight

See what’s working.
Know what’s next.

Bring your Poshmark sales and inventory into focus. Follow revenue and earnings, find your strongest performers, and see where your closet needs attention.

Explore Seller Insight Get the app
Seller Insight live sales screen showing sold items, daily revenue, and weekly sales charts.

  • Follow your sales

    See revenue and net earnings together.

  • Find your strengths

    Discover the brands, categories, and sizes that perform.

  • Understand your inventory

    See what’s moving and what’s sitting.

  • Plan your next move

    Put your own sales history to work.

Made for Apple

Different screens. The same care.

We build for iPhone, iPad, Mac, Apple TV, and Apple Watch—with attention to how each device is actually used.

iPhone

Close at hand.

iPad

Room to explore.

Mac

Space to focus.

Apple TV

A bigger view.

Apple Watch

A quick glance.

What would you like to build?

Tell us about the idea, the problem, or the thing you wish worked better.

Let’s talk sfs@solidfoundationsoftware.com