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Dev partner for AI, SaaS & tech startups | Based in New York

Devs your investors wish you hired first

Y Interval helps ramp up dev capacity, speed up product development and launch smarter products using AI and data.

150+

In product launches

$1.55B

Startup funding raised

10x ROI

App Product Revamp

25K+

Funds and syndicates

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our work

See our projects, each of them equally aced

We team up with startups, SaaS companies, and digital brands to create data-driven solutions that look great — and perform even better.

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Vantara - Bringing Wildlife into the Digital Age

Bringing wildlife conservation into the digital age with web design and dev

UX/UI
AI
Web Development
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MoonPay - Buy & Trade Crypto

Powering the next generation of crypto trading and commerce.

Fintech
UI/UX Design
App Development
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Owner.com - Top Restaurant Software

Full revamp of Owner.com’s UX, added AI, and rebuilt their app for scale.

Product Design
AI
App Development
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Headspace - Smarter Path to Mindfulness

Scalable and modern component system for product teams to build faster.

MVP
Product Design
AI/ML
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Ro — Smarter Digital Healthcare with AI

Powering smarter digital healthcare with better UX and AI

Product
SaaS Design
Generative AI
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The Atlantic - Legacy Brand for the Digital Era

Conversational AI interface designed to boost engagement and reduce churn.

AI Design
Product Strategy
UI/UX Design
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1Bill - Smarter Bill Management with AI

Winning over thousands of users with new web app

Generative AI
UX/UI
App Development
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MoonPay - Buy & Trade Crypto

Powering the next generation of crypto trading and commerce.

Fintech
UI/UX Design
App Development
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Vantara - Bringing Wildlife into the Digital Age

Bringing wildlife conservation into the digital age with web design and dev

UX/UI
AI
Web Development
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James Smith Academy - Redefining Fitness

Redefining fitness through personalization, AI and data

Product Design
AI SaaS
Data Visualization
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Headspace - Smarter Path to Mindfulness

Scalable and modern component system for product teams to build faster.

MVP
Product Design
AI/ML
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Ro — Smarter Digital Healthcare with AI

Powering smarter digital healthcare with better UX and AI

Product
SaaS Design
Generative AI
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1Bill - Smarter Bill Management with AI

Winning over thousands of users with new web app

Generative AI
UX/UI
App Development
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Earlywork - Empowering the Next Generation

Truly intelligent career ecosystem powered by data and AI

Product Design
AI SaaS
Data
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Headspace - Smarter Path to Mindfulness

Scalable and modern component system for product teams to build faster.

MVP
Product Design
AI/ML
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Sportano - Sports Retailer Mobile App

Building a high-performance cross-platform shopping experience

Staff Augmentation
Backend
Product Design
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Owner.com - Top Restaurant Software

Full revamp of Owner.com’s UX, added AI, and rebuilt their app for scale.

Product Design
AI
App Development
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Proof we don’t suck

We could brag all day, but our clients do it better.

Stuff we’re really good at

Startups and enterprise companies like GatewayX and Owner.com use Y Interval to speed up development at every stage.

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UI/UX Design

Intuitive experiences are what turn functional products into memorable.

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Mobile / Web Apps

We design and develop fast, beautiful, and bulletproof web apps that actually work (and don’t crash on demo day).

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AI/ML & Data Solutions

We help you sprinkle AI on your product — the useful kind, not the “ask me anything and I’ll hallucinate” kind.

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Build Your Team

Hire dedicated devs, AL/ML engineers or build the whole dream team super fast to work exclusively on your project.

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And there’s more

Specialized support built for evolving teams and enterprise companies.

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Because “figure it out later” isn’t a strategy

We don’t follow trends blindly or build without context.

We don’t just make things look good — we make them make sense. Every software, website or app we craft ties back to your goals, and every build is tested, validated, and ready for real users.

Product Strategy
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Strategy Workshop
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Competitor Research
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Technical Feasibility
4
Requirements Gathering
5
Team Assembly
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Roadmapping
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Documentation
Development
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Environment Setup
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Wireframes & Flows
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Architecture
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DevOps & Hosting
QA & Testing
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Unit Testing
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Integration Testing
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User Acceptance Testing (UAT)
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Bug Fixing & Refinement
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Launch Deployment
Delivery
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Handoff
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Feedback
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Maintenance
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Features

Built for founders, by founders

We are a team of ex-founders that learned what worked from building 5 internal startups and now have a playbook that can work for you.

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Multilingual by Design

Speak to users in 100+ languages - no plugins.

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Intelligent Tool Hooks

Connect tools or services to trigger contextual actions.

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A/B Prompt + UX Testing

Optimize what matters. Run real-time experiments.

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Custom Model Support

Bring your own AI. Use your LLMs models with full design.

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Real-Time Prototype

Preview, test, and validate designs.

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99.9% Uptime

Enterprise-grade audio infra built.

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Launch Support

Hands-on help from a dedicated deployment

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AI Guardrails

Built-in safeguards reduce hallucinations.

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Compliance

Fully SOC 2, HIPAA & PCI-ready for regulated.

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testimonial

We’d brag, but our clients beat us.

Empowering fast-growing startups with data-driven, AI-powered solutions built for scale.

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Faster MVP Launch
“Their design-thinking mindset combined with AI knowledge helped us go from prototype to production fast.”
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70%
Fewer Drop-Offs
“They worked like an internal team — fast, flexible, and always clear. Product delivery felt seamless.”
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99.8% / <500ms
MVP build and web dev
“We went from zero to launch in 8 weeks with rock-solid infra and refined UX built in.”
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+125%
Activation Rate
“Simple, thoughtful onboarding changes doubled activation — and it only took weeks.”
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Higher Investor Engagement
“A complete redesign that made our product investor-ready — sharp, intuitive, and conversion-focused.”
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pricing plan

Transparent Pricing

From lean MVPs to enterprise-ready builds, choose a plan that fits your roadmap.

Stay Limited
$0,000
Ideal if you enjoy paying for bugs and heartbreak.
Nah - change it
we know you can relate
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Stay the same
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Keep interviewing devs who ghost after day two
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Keep guessing if your MVP will ever ship
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Endless Slack threads about “next steps”
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Keep saying “we’ll fix it after launch”
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Maybe another standup will magically solve it
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Go back-n-forth on 1 feature 100 times
Dedicated Dev
$45/hr
Hire rockstar devs
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Find talent in 24 hours
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Pre-screened devs
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Flexible contracts
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Weekly standups & reporting
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Part-time or full-time
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Timezone match
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Plug-n-play
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Free trial
If you are not happy with the dev, let us know within the free trial and we'll find an alternative or refund you right away.
Contact Sales
AI Power-up
$80/hr
Hire AI/ML or data engineer
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Core includes all
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Advanced AI/ML or data builds
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Devs with 20+ years of experience
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Integration with LLMs, APIs, and vector databases
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Backend system architecture & cloud setup
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Dedicate support
Have questions before buying Teams?
Contact Sales
Enterprise or MVP Build
Custom pricing
For scalable, secure builds
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Core includes all
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Full dev squad
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End-to-end support
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Custom integrations & automation systems
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Dedicated project manager
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Priority support + 24/7 uptime SLAs
MVP builds start from as low as $20k (one-off) from idea to launch.
Contact Sales
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See How We Help Teams Win

Behind the Builds

Check out some of the projects, each of them equally aced.

FAQs (aka Founder Anxiety Questions)

We’ve heard it all. Here’s everything you need to know before working with us.

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What types of clients do you work with?
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What kind of developers can I hire through Y Interval?
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Where are you based?
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Do you handle design too?
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How do we communicate?
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What if I want to pause or cancel?
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What if I need help after launch?
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