Publish on Jest

A platform for messaging apps with a simple SDK, zero messaging costs, and capital to scale.

You build the app.
We handle the rest.

Jest makes it easy for developers to harness the power of messaging.

Built-In messaging infrastructure

We handle the heavy lifting - from infrastructure and carrier integrations to compliance and liability - so your team can focus on building great apps.

Zero messaging cost

Jest subsidizes 100% of text message delivery, eliminating a major barrier to experimenting with messaging-based experiences.

Dedicated funding to help you grow

We operate the Jest Apps Fund, offering up to $1M/app in growth capital and user acquisition support to help developers launch, test, and scale.

Learn more and apply →

Launch on Jest in 3 steps

Create web build

If it runs on the web and works well on mobile, you're almost there.

Integrate the Jest SDK

Add the SDK and call our APIs. We handle everything behind the scenes.

Upload your app

Upload and publish your app through the Jest Developer Console.

Outperform native apps

Messaging apps on Jest consistently beat native installs where it matters most.

3-4x Higher Retention

No, that's not a typo: Jest sees 3-4x higher retention than mobile apps!

Mobile App

Messaging App

35–60% Cheaper User Acquisition

Skip the app store grind: messaging apps are an untapped channel.

Mobile App

Messaging App

Results based on a 4-month test (Oct '25-Jan '26) with US mobile users, covering 1M+ app opens and 300K+ messages sent. Retention measured as D7 retention; UA costs compared as cost per texting subscriber (CPS) vs. cost per mobile app install (CPI).