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Serein · Software company

We build software for real problems.

Serein makes focused products for tasks that are complicated, consequential or easy to get wrong. Every one is designed to make that task clearer for the person doing it.

See our productsContact us

Now building

Ventures

Products with a clear job to do.

Serein designs, builds and runs its own products, each focused on a specific problem.

TaxCueiPhone · Preparing for the App Store

Know before you spend.

TaxCue is a mobile-first tax copilot for business owners. It helps you understand the tax side of a business purchase before, during and after you make it, and keeps the documentation you’ll need.

  1. 01Before you buyCheck an item from a photo, a product link or a plain question.
  2. 02While you decideSee how federal and state rules are likely to treat it, and why.
  3. 03After you buySave a Tax File and keep track of the records it still needs.
Explore TaxCueSupport

TaxCue provides tax information and organizes records. It is not a CPA, EA or attorney, and it doesn’t guarantee how a purchase will be treated.

TaxCue home screen asking “Can I write this off?” with options to take a photo, ask, paste a link or choose photos.
TaxCue tax analysis for a MacBook Pro bought new: likely deductible, with business use, business basis, tax year and what it means.
A TaxCue Tax File for the purchase, 50% complete, listing the receipt and business purpose still needed.
The BrainLeaf reading workspace with a biology chapter open, a learning map summarising the chapter and an Explain this page action.
A BrainLeaf Visualize canvas titled Foundations of Biology, tracing atoms, molecules and a eukaryotic cell.
BrainLeafWeb · Private beta

A workspace for what you’re actually learning.

BrainLeaf helps students understand, organize and work with their own learning material. It is built local-first, so the material stays under the student’s control.

Read
Open a textbook chapter, lecture slides or notes, with a map of what’s inside.
Ask Leaf
Ask questions answered from your own material, with page citations.
Practice
Turn a reading into flashcards and practice questions.
Visualize
See the ideas in your material laid out as a diagram.
Visit brainleaf.io(opens in a new tab)

Approach

Useful over impressive.

How we decide what to build, and what to leave out.

  1. 01

    Start with the problem

    We start from a task people find hard, not a technology looking for a use.

  2. 02

    Keep the scope deliberate

    Each product has a defined job. Features earn their place by making it easier.

  3. 03

    Be straight with people

    Our software says what it knows, what it doesn’t, and when to call a professional.

  4. 04

    Build for the long term

    We maintain what we ship and make decisions we expect to stand behind for years.

About

Focused products, built around real problems.

Serein is the product and software brand operated by Serein Ventures LLC.

Serein Ventures LLC is a software company. It builds TaxCue, BrainLeaf and the systems behind them, and publishes that work under the Serein name.

Legal entity
Serein Ventures LLC
Public brand
Serein
What we do
Design, build and operate software products
Products
TaxCue, BrainLeaf
Website
sereinventures.com
Contact
hello@sereinventures.com

Contact

Have something worth building?

Tell us about it, or ask anything about Serein and our products.

hello@sereinventures.com
Using TaxCue? Visit TaxCue Support