Paxerr
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Mobile apps customers keep coming back to.

Fast, intuitive iOS and Android experiences designed around real user behavior.

Our work

30-day money-back guarantee

Trusted by 1,000+ companies

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Warning

A frustrating mobile experience loses users fast.

  • Users leave before reaching the value of your app.
  • Poor mobile patterns make simple tasks feel difficult.
  • A weak foundation slows every future release.
Solutions

We create mobile experiences that feel fast, familiar, and valuable

  • Keep users engaged.

    Fast, focused journeys make returning to the app feel effortless.

  • Launch on both platforms.

    Deliver a consistent, polished experience across iOS and Android.

  • Grow without rebuilding.

    A maintainable foundation supports new features, users, and integrations.

What we do

Everything your mobile product needs.

Product Strategy

Define the audience, core value, feature priorities, and launch roadmap.

iOS & Android UX

Design clear journeys around familiar platform behavior and real user needs.

Cross-platform Development

Build one maintainable product that feels polished on both platforms.

Backend & APIs

Connect accounts, content, data, and business logic securely.

Payments & Notifications

Add subscriptions, purchases, alerts, and engagement flows.

Store Launch

Prepare, test, submit, and support the release on both app stores.

Our work

Websites and apps we've created for businesses worldwide.

CatProxies logo

CatProxies

We turned a complex proxy service into a fast, simple platform customers can use with confidence.

catproxies.com

CatProxies

5.0

Crypthost logo

Crypthost

We created a simple place to buy and manage hosting, virtual servers, and dedicated servers.

crypthost.cloud

Notatz

5.0

Passle logo

Passle

A creator platform for selling content, messaging fans, and growing a paid community.

passle.io

BTSynical

5.0

LeaksHub logo

LeaksHub

A creator platform where fans use credits to unlock models and premium content, with monthly subscriptions for ongoing access.

leakshub.io

LeaksHub

5.0

Want results like these?

Tell us what you need. We'll recommend the clearest way to move forward.

Technologies we use

Modern mobile tools selected for speed, reliability, and a maintainable product.

Cross-platform

One focused codebase with a polished experience on iOS and Android.

  • React Native
  • Flutter
  • Expo
  • TypeScript

Native Platforms

Platform-specific tools when performance or device capabilities demand them.

  • Swift
  • Kotlin
  • iOS
  • Android

Backend & Data

Reliable services for accounts, content, data, and real-time features.

  • Firebase
  • Supabase
  • Node.js
  • Python
  • PostgreSQL

Our simple process

You'll always know what's happening, what's next, and what to expect.

  1. 01

    Step 01

    Discover & Plan

    We define the users, mobile use cases, requirements, and clearest path to launch.

  2. 02

    Step 02

    Design

    We design familiar, accessible journeys and validate them with a realistic prototype.

  3. 03

    Step 03

    Develop

    We build the app, backend connections, and essential integrations in reviewable milestones.

  4. 04

    Step 04

    Test & Refine

    We test important flows across real devices and refine performance and usability.

  5. 05

    Step 05

    Release & Support

    We prepare the stores, launch the app, monitor it, and support ongoing improvements.

Compare your app development options

See what's best for you before you decide.

AI Tools
Pricing & Delivery
FactorAI Tools
Starting price
$20/month
Typical delivery
Self-managed
Quality & Delivery
FactorAI Tools
App-store ready product
No
iOS and Android included
Limited
Backend and integrations
Limited
Team & Process
FactorAI Tools
Dedicated project manager
Regular progress updates
Guarantees
FactorAI Tools
Unlimited revisions
No
30-day money-back guarantee
1-year support included
Freelancers
Pricing & Delivery
FactorFreelancers
Starting price
$2,000+
Typical delivery
1 to 3 months
Quality & Delivery
FactorFreelancers
App-store ready product
Limited
iOS and Android included
Limited
Backend and integrations
Limited
Team & Process
FactorFreelancers
Dedicated project manager
Regular progress updates
Limited
Guarantees
FactorFreelancers
Unlimited revisions
No
30-day money-back guarantee
No
1-year support included
No
Agencies
Pricing & Delivery
FactorAgencies
Starting price
$15,000+
Typical delivery
2 to 6 months
Quality & Delivery
FactorAgencies
App-store ready product
Yes
iOS and Android included
Yes
Backend and integrations
Yes
Team & Process
FactorAgencies
Dedicated project manager
Limited
Regular progress updates
Limited
Guarantees
FactorAgencies
Unlimited revisions
No
30-day money-back guarantee
No
1-year support included
No
Paxerr
Pricing & Delivery
FactorPaxerr
Starting price
$9,999+
Typical delivery
6 to 12 weeks
Quality & Delivery
FactorPaxerr
App-store ready product
Yes
iOS and Android included
Yes
Backend and integrations
Yes
Team & Process
FactorPaxerr
Dedicated project manager
Yes
Regular progress updates
Yes
Guarantees
FactorPaxerr
Unlimited revisions
Yes
30-day money-back guarantee
Yes
1-year support included
Yes
Compare ways to create your web application
Comparison criteria
AI Tools
Freelancers
Agencies
Paxerr
Pricing & Delivery
Starting price
$20/month
$2,000+
$15,000+
$9,999+
Typical delivery
Self-managed
1 to 3 months
2 to 6 months
6 to 12 weeks
Quality & Delivery
App-store ready product
No
Limited
Yes
Yes
iOS and Android included
Limited
Limited
Yes
Yes
Backend and integrations
Limited
Limited
Yes
Yes
Team & Process
Dedicated project manager
Limited
Yes
Regular progress updates
Limited
Limited
Yes
Guarantees
Unlimited revisions
No
No
No
Yes
30-day money-back guarantee
No
No
Yes
1-year support included
No
No
Yes

What clients say

Real feedback from businesses we've worked with.

  • CatProxies

    5.0

    CatProxies

    Paxerr took the time to understand what I needed, built a professional site that runs smoothly, and delivered API endpoints that made managing proxies much easier.
    Verified Review

  • BTSynical

    5.0

    Passle

    The developer understood my vision from the start, everything went smoothly, and they were talented and easy to work with. I’d recommend them without hesitation.
    Verified Review

  • Notatz

    5.0

    Crypthost

    They delivered more than expected, answered every question quickly, and finished the project ahead of my timeline. I’ll definitely come back.
    Verified Review

Choose the right package

Clear starting prices for app launches, complete products, and enterprise platforms.

Launch

Validate and launch a focused mobile product.

Starting at

$9,999+

Typical Projects

  • MVP App
  • Customer App
  • Booking App
  • Content App

What's Included

  • Product Discovery
  • Mobile UI/UX Design
  • Cross-platform Development
  • Core Backend Integration
  • Store Submission

24/7 support available

Scale

Most Popular

Create a complete mobile product built for growth.

Starting at

$24,999+

Typical Projects

  • Subscription App
  • Marketplace
  • Fintech App
  • Service Platform

What's Included

  • Product Strategy
  • Complete Product Design
  • Full App Development
  • Payments & Notifications
  • Analytics & Production Launch

24/7 support available

Enterprise

Deliver complex, secure mobile experiences at scale.

Starting at

$59,999+

Typical Projects

  • Enterprise App
  • Multi-role Platform
  • Connected Ecosystem
  • Global Product

What's Included

  • Technical Discovery
  • Dedicated Product Management
  • Advanced Mobile Development
  • Security & Performance
  • Long-Term Product Partnership

24/7 support available

Guarantees

We're confident in our work, and we stand behind it.

  • Unlimited Revisions

    We work with you until everything is exactly the way you want it.

  • 30-Day Full Refund Guarantee

    If you're not satisfied within the first 30 days, we'll give you a full refund.

  • 1-Year Support Guarantee

    Launch with confidence knowing we're here after delivery.

Frequently asked questions

Straight answers about platforms, timelines, launch, and ownership.

Yes. We recommend the right cross-platform or native approach based on the product, performance needs, budget, and long-term roadmap.

Focused mobile MVPs start from $9,999. Complete products and enterprise apps require a broader scope. After discovery, you'll receive a fixed proposal with the deliverables, timeline, and price.

Yes. We can integrate with your current backend and APIs or build the services needed to support the mobile product.

Yes. We help prepare store assets, technical requirements, builds, testing, and submission for both platforms.

We monitor the release, fix issues in the delivered scope, and remain available for updates and improvements through our 1-year support guarantee.

Marco Kelly
Amelie Laurent
Jaya Willis

Still have questions?

Can’t find the answer you’re looking for? Chat with our friendly team.

Let's bring youridea to life.

Tell us about your project. We'll take care of the rest.

  • Unlimited Revisions
  • 30-Day Full Refund Guarantee
  • 1-Year Support Guarantee
Our work