Product Development

Custom Mobile App Development

Native iOS and Android apps built to your exact requirements — not templates, not shortcuts. Architecture through App Store.

What You Get

A Product You Can Ship

01

Apps built for real users

We research your users before writing a line of code. The result is a product people actually use — not one that sits on a shelf.

02

Native performance, every time

No sluggish cross-platform shortcuts unless they're right for your project. We match platform to problem.

03

Production-ready architecture

Clean code, proper testing, and CI/CD from day one. Your app can handle real traffic and real growth.

§ 03MEASURED OUTCOMES

Results that
speak for themselves.

Seven years of shipping. Every number below comes from real products in-market — no vanity metrics.

#012M+
Downloads of apps we shipped

Combined iOS + Android installs across our products.

#0280%
Long-term or returning clients

Clients work with us 4+ years or come back for more.

#0360%
Team with 5+ year tenure

A senior team built on retention, not churn.

#04$50M+
In investment attracted

Capital raised by startups using products we built.

FIG. 03 — RESULTS SUMMARY, 2019–2026SOURCE: INTERNAL · AGGREGATED ACROSS 40+ ENGAGEMENTS

Our Approach

How We Build Mobile Apps

Most mobile projects go wrong in the planning phase, not the build phase. We front-load discovery so the build goes smoothly.

Platform strategy first

iOS, Android, React Native, or Flutter — the right choice depends on your users, timeline, and budget. We advise honestly and then execute whatever we recommend.

Design that ships

Our designers work alongside developers, not ahead of them. Every screen is reviewed for feasibility before it goes to engineering.

Agile, but actually agile

Weekly sprints, live demos, and real access to your developers. You see working software every week — not a Gantt chart.

App Store ready from sprint one

We build with App Store and Play Store guidelines in mind from day one. Compliance, metadata, screenshots — we handle the submission.

Selected Work

Projects We've Shipped

§ REVIEWSCLIENT FEEDBACK

What our Clients Say

Every review is real and verifiable — straight from Clutch, Upwork, and LinkedIn. Nothing cherry-picked.

★★★★★
The quality for price is really high.

Prosperity is always happy to share their knowledge.

RG
Remy Gasterich
OWNER · SUISSECO GMBH
VIEW →
★★★★★
It feels like they're part of the team, and they make good decisions without needing a lot of support.

I presented Illia with a problem, he helped me think through of a way to solve the problem and best of all: him and his team were able to actually implement it! He's got great entrepreneurial instincts.

AL
Andre Laboy
OWNER · SCRIPTED LABS LLC
VIEW →
★★★★★
I think what sets them apart is the range of skills they bring to a project, as well as their level of knowledge.
DL
Derry Lozano-Hoyland
PRODUCT OWNER · CUBITTS
VIEW →
★★★★★
From start to finish, the entire experience was nothing short of exceptional.

The team at Prosperity was super fast to respond to all our queries and requests. Their commitment to quality was evident in their extensive testing, ensuring a smooth and seamless integration of SSO into our apps.

JM
John McCann
HEAD OF PRODUCT · COMPLYFLOW
VIEW →
★★★★★
The project was an enjoyable and positive experience.

I like the personal touch they have. They offer good bang for the buck.

FW
Filip Witek
INSIGHT MANAGER · CUBITTS
VIEW →
★★★★★
When I ask Prosperity to do something that doesn't make sense, they suggest alternatives that work better.
KP
Ketan Patel
OWNER · MINT INSPECT
VIEW →
★★★★★
They were honest, direct easy to communicate, had great quality and excellent value.

The build quality was very good overall and bugs were fixed quickly.

GJ
Greg Jarrett
FOUNDER · LOOPS REWARDS
VIEW →
★★★★★
I'm really happy I chose to work with Illia to develop a face measurement taking iOS application.

He has been very communicative, got the work done on time, delivered a quality application, and was able to solve some technical challenges related to determining landmark points on ARKit-derived 3D model.

FM
Verified Upwork Client
CLIENT · ARKIT FACIAL MEASUREMENT APP
★★★★★
It was such a pleasure to work with Illia for the development of our App.

He is super experienced and has excellent work ethics. Illia delivered our project on time and never missed any milestones along the way. He is our number 1 developer to go to for any technical knowhow.

CA
Verified Upwork Client
CLIENT · CAMERA APP
★★★★★
Prosperity is an amazing team and provide excellent work.

I am looking forward to working with them again in the future. Total class act and very professional, plus excellent code.

CP
Verified Upwork Client
FOUNDER · CRUISE PLATFORM
★★★★★
Illia was fantastic to work with.

Understood requirements well, worked with me to brainstorm ways to achieve the functionality needed, tested and debugged, and delivered a crash-proof, pixel-perfect iPad application.

iP
Verified Upwork Client
CLIENT · IPAD ART INSTALLATION
★★★★★
Illia has done a really great job.

He's a strong communicator through and delivers high quality work. I can highly recommend him for future work. I will be hiring him again in future!

NA
Verified Upwork Client
CLIENT · NATIVE IOS APP
★★★★★
The team was a great help to us in this project!

The delivery and the workflow were very professional. The team went beyond the scope, they took more responsibility and provided us with the required expertise, although the project was complicated. We are happy to recommend this team!

AR
Verified Upwork Client
CLIENT · NFT APP WITH AR
★★★★★
Fast delivery, high code quality, and ability to communicate with the rest of the team.
PB
Verified Upwork Client
CLIENT · PYTHON BACKEND & REACT NATIVE APP
★★★★★
Illia and his team, delivered and completed the project on time.

They are highly professional, excellent communication skills and the entire project was completed smoothly without any issue along the way. We highly recommend them to anyone and have continued working with them on our ongoing projects and future work.

RF
Verified Upwork Client
CLIENT · REACT FRONTEND
★★★★★
The developer communicated well and delivered high-quality code, we already rehired him again.
RN
Verified Upwork Client
CLIENT · REACT NATIVE APP
★★★★★
Working with Prosperity has been a pleasure.

They will do everything possible make your project perfect.

iA
Verified Upwork Client
CLIENT · IOS APP
★★★★★
Illia helped us with frontend development in Swift.

His excellent technical skills are paired with very good communication skills, made it very easy for us to onboard him onto a running project and complete the work as planned.

SM
Verified Upwork Client
CLIENT · SWIFT MOBILE APP
★★★★★
We're impressed with their transparency and ability to solve very challenging technical problems.
EL
Emil Larsen
CTO · UTILIGIZE
VIEW →
★★★★★
The quality for price is really high.

Prosperity is always happy to share their knowledge.

RG
Remy Gasterich
OWNER · SUISSECO GMBH
VIEW →
★★★★★
It feels like they're part of the team, and they make good decisions without needing a lot of support.

I presented Illia with a problem, he helped me think through of a way to solve the problem and best of all: him and his team were able to actually implement it! He's got great entrepreneurial instincts.

AL
Andre Laboy
OWNER · SCRIPTED LABS LLC
VIEW →
★★★★★
I think what sets them apart is the range of skills they bring to a project, as well as their level of knowledge.
DL
Derry Lozano-Hoyland
PRODUCT OWNER · CUBITTS
VIEW →
★★★★★
From start to finish, the entire experience was nothing short of exceptional.

The team at Prosperity was super fast to respond to all our queries and requests. Their commitment to quality was evident in their extensive testing, ensuring a smooth and seamless integration of SSO into our apps.

JM
John McCann
HEAD OF PRODUCT · COMPLYFLOW
VIEW →
★★★★★
The project was an enjoyable and positive experience.

I like the personal touch they have. They offer good bang for the buck.

FW
Filip Witek
INSIGHT MANAGER · CUBITTS
VIEW →
★★★★★
When I ask Prosperity to do something that doesn't make sense, they suggest alternatives that work better.
KP
Ketan Patel
OWNER · MINT INSPECT
VIEW →
★★★★★
They were honest, direct easy to communicate, had great quality and excellent value.

The build quality was very good overall and bugs were fixed quickly.

GJ
Greg Jarrett
FOUNDER · LOOPS REWARDS
VIEW →
★★★★★
I'm really happy I chose to work with Illia to develop a face measurement taking iOS application.

He has been very communicative, got the work done on time, delivered a quality application, and was able to solve some technical challenges related to determining landmark points on ARKit-derived 3D model.

FM
Verified Upwork Client
CLIENT · ARKIT FACIAL MEASUREMENT APP
★★★★★
It was such a pleasure to work with Illia for the development of our App.

He is super experienced and has excellent work ethics. Illia delivered our project on time and never missed any milestones along the way. He is our number 1 developer to go to for any technical knowhow.

CA
Verified Upwork Client
CLIENT · CAMERA APP
★★★★★
Prosperity is an amazing team and provide excellent work.

I am looking forward to working with them again in the future. Total class act and very professional, plus excellent code.

CP
Verified Upwork Client
FOUNDER · CRUISE PLATFORM
★★★★★
Illia was fantastic to work with.

Understood requirements well, worked with me to brainstorm ways to achieve the functionality needed, tested and debugged, and delivered a crash-proof, pixel-perfect iPad application.

iP
Verified Upwork Client
CLIENT · IPAD ART INSTALLATION
★★★★★
Illia has done a really great job.

He's a strong communicator through and delivers high quality work. I can highly recommend him for future work. I will be hiring him again in future!

NA
Verified Upwork Client
CLIENT · NATIVE IOS APP
★★★★★
The team was a great help to us in this project!

The delivery and the workflow were very professional. The team went beyond the scope, they took more responsibility and provided us with the required expertise, although the project was complicated. We are happy to recommend this team!

AR
Verified Upwork Client
CLIENT · NFT APP WITH AR
★★★★★
Fast delivery, high code quality, and ability to communicate with the rest of the team.
PB
Verified Upwork Client
CLIENT · PYTHON BACKEND & REACT NATIVE APP
★★★★★
Illia and his team, delivered and completed the project on time.

They are highly professional, excellent communication skills and the entire project was completed smoothly without any issue along the way. We highly recommend them to anyone and have continued working with them on our ongoing projects and future work.

RF
Verified Upwork Client
CLIENT · REACT FRONTEND
★★★★★
The developer communicated well and delivered high-quality code, we already rehired him again.
RN
Verified Upwork Client
CLIENT · REACT NATIVE APP
★★★★★
Working with Prosperity has been a pleasure.

They will do everything possible make your project perfect.

iA
Verified Upwork Client
CLIENT · IOS APP
★★★★★
Illia helped us with frontend development in Swift.

His excellent technical skills are paired with very good communication skills, made it very easy for us to onboard him onto a running project and complete the work as planned.

SM
Verified Upwork Client
CLIENT · SWIFT MOBILE APP
★★★★★
We're impressed with their transparency and ability to solve very challenging technical problems.
EL
Emil Larsen
CTO · UTILIGIZE
VIEW →

Mobile Apps Across Every Vertical

Deep domain knowledge across core verticals — so you get a team that understands your market, not just your code.

How It Works

From First Call to Live App

01

Discovery

We map your users, competitors, and core jobs-to-be-done. You walk away with a shared brief that drives every subsequent decision.

02

Scope & Proposal

Fixed price, fixed scope, clear milestones. You know exactly what you're getting and when.

03

UX & Design

Wireframes, prototypes, and visual designs — iterated with you before any code is written.

04

Development

Weekly builds delivered to TestFlight or Firebase. You can test on a real device from week two.

05

QA & Launch

Thorough QA on real devices, then submission and monitoring through go-live and beyond.

Why Prosperity

Why Teams Choose Us for Mobile Development

There are hundreds of mobile agencies. Here's what separates us.

Senior developers, always

No juniors learning on your project. Every developer we put on your app has shipped production mobile apps with real users.

Design and engineering in one team

No handoff gaps. Our designers and developers work in the same sprint, solving the same problems.

40+ apps shipped

We've built apps for healthcare companies, fintech startups, utility providers, and ecommerce brands. Whatever your domain, we've probably built something adjacent.

We stay after launch

Most clients keep us on for v2 and v3. That's because we don't hand over and disappear — we become your long-term mobile team.

FAQ

Frequently Asked Questions

Most custom apps take 12–24 weeks from kick-off to App Store submission, depending on complexity. We'll give you a precise timeline after discovery.

§ 13 — Contact

Book a call.
Leave with a plan.

A direct line to the engineers who'll actually do the work. We'll map your problem to a scope and timeline in one short conversation.

Trusted & verified

Clutch★★★★★5.0 · 12 reviews
AgencyReviewVerified · Software Agencies