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

We build world-class digital products

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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Trusted by 150+ tech-driven teams.

Dev team your investors wish you hired first.

Y Interval exists to fix what most agencies get wrong: slow builds, vague timelines, and zero ownership. We move like founders — fast, focused, and obsessed with shipping real results.

100+

In-house engineers

24 Hrs.

Matching time

Hire vetted devs
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Trusted by garage founders and corner-office execs

Launch. Scale. Stabilize.

Quick responses, thoughtful revisions, and flexible post-launch care built for modern teams.

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24/7 Priority Response

Urgent updates handled fast-priority requests completed within 24H.

Plug-n-Play

Our team plugs in fast — our devs work just like your in-house team without the hefty payroll.

Hire with zero-risk

Need to fine-tune something after launch?

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Breaks on mobile or tablet
Missing form validations
APIs fail in staging
Broken authentication flows
Webhooks not firing correctly
Forgotten background flows
Repeated database calls
Valid for 90 days after launch
Includes everything that we've worked on – no extra cost.

We’ve got you cover with subtle updates, app maintained

OUTCOMES AND Results

Outcomes that speak for themselves

We focus on real results - built through data, design, and innovation. Every project, every metric, every milestone matters.

redesigned trading app
Digital Gold Trading Platform
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Platform performance improved 3×, user retention up 40%, and new traders onboarded daily across 15+ countries.

BUILT AI-POWERED INVESTING APP
Community SaaS Infrastructure
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+50%
Conversion Uplift
-35%
Drop in Bounce Rate

Built a modular API gateway, optimized database queries, and revamped caching for better scalability.

DEVELOPED MOBILE APP
Velocity Mobile Apps
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Revamped the whole mobile app and added customer loyalty and shareability.

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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NeuronIQ – AI-Powered Hiring Assistant

Streamlined UX for smarter candidate filtering and team collaboration.

Product Design
AI SaaS
UX Strategy
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Echo – AI Analytics Platform Design

Data-rich dashboards with a clean interface for better decision-making.

Interaction
AI SaaS
Data Visualization
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Nanobot – AI Chat Experience

Conversational AI interface designed to boost engagement and reduce churn.

AI Design
Product Strategy
UI/UX Design
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OrbitPay – Banking and Fintech App

Modern banking reimagined with intuitive UI and secure user flows.

Fintech
UI/UX Design
App Development
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Vireo – Mental Health Care App

Gentle visuals and guided flows for a more mindful user journey.

Healthcare
Mobile App Design
Brand Identity
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Clarity – Healthcare Onboarding Dashboard

Guided SaaS onboarding with real-time tips to drive faster user activation.

UX Flow
SaaS Design
Frontend Development
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Solara – Smart Home Dashboard

A responsive interface for managing home tech through AI automation.

IoT Interface
UX Research
Responsive Design
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Nova – UI Kit for SaaS Teams

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

UI Kit Design
Design System
Dev Handoff
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Owner.com - #1 Top-Rated Restaurant Software

We revamped Owner.com’s UX, added AI, and rebuilt their app for scale.

Product Design
Generative AI
App Development
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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 Apps

We build mobile apps that don’t crash, lag, or make users rage-quit. iOS or Android? Both? Doesn’t matter.

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Web Apps / Software

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
1
Strategy Workshop
2
Competitor Research
3
Technical Feasibility
4
Requirements Gathering
5
Team Assembly
6
Roadmapping
7
Documentation
Development
8
Environment Setup
9
Wireframes & Flows
10
Architecture
11
DevOps & Hosting
QA & Testing
12
Unit Testing
13
Integration Testing
14
User Acceptance Testing (UAT)
15
Bug Fixing & Refinement
16
Launch Deployment
Delivery
17
Handoff
18
Feedback
18
Maintenance
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.

Multilingual by Design

Speak to users in 100+ languages - no plugins.

Intelligent Tool Hooks

Connect tools or services to trigger contextual actions.

A/B Prompt + UX Testing

Optimize what matters. Run real-time experiments.

Custom Model Support

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

Real-Time Prototype

Preview, test, and validate designs.

99.9% Uptime

Enterprise-grade audio infra built.

Launch Support

Hands-on help from a dedicated deployment

AI Guardrails

Built-in safeguards reduce hallucinations.

Compliance

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

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.”
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
Stay the same
Keep interviewing devs who ghost after day two
Keep guessing if your MVP will ever ship
Endless Slack threads about “next steps”
Keep saying “we’ll fix it after launch”
Maybe another standup will magically solve it
Go back-n-forth on 1 feature 100 times
Dedicated Dev
$45/hr
Hire rockstar devs
Find talent in 24 hours
Pre-screened devs
Flexible contracts
Weekly standups & reporting
Part-time or full-time
Timezone match
Plug-n-play
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
Core includes all
Advanced AI/ML or data builds
Devs with 20+ years of experience
Integration with LLMs, APIs, and vector databases
Backend system architecture & cloud setup
Dedicate support
Have questions before buying Teams?
Contact Sales
Enterprise or MVP Build
Custom pricing
For scalable, secure builds
Core includes all
Full dev squad
End-to-end support
Custom integrations & automation systems
Dedicated project manager
Priority support + 24/7 uptime SLAs
MVP builds start from as low as $20k (one-off) from idea to launch.
Contact Sales
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.

What types of clients do you work with?
What kind of developers can I hire through Y Interval?
Where are you based?
Do you handle design too?
How do we communicate?
What if I want to pause or cancel?
What if I need help after launch?
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Build your dev team in 48 hrs.