Mobile app development
Mobile apps that pass review, and keep passing it
iOS and Android apps in React Native, built to the security and release standards of regulated industries — and kept current long after launch day.
What we build
What does FetchSky's mobile work include?
FetchSky designs, builds and maintains iOS and Android apps in React Native, and AR and VR experiences. Much of our mobile work has been for banks, insurers and telecom operators, where apps must pass strict security review as well as app store review. We also run Bonsify, our studio that builds native apps for Shopify stores.
iOS and Android apps
One React Native codebase for both platforms, with the feel users expect on each.
AR and VR experiences
Augmented and virtual reality experiences, inside the app or on their own.
UX and UI design
Flows designed for one-handed, on-the-go use.
Back-end and APIs
The services and integrations the app depends on.
Security hardening
Secure storage, certificate pinning, root and jailbreak detection where needed.
App store release
Submission, review and store listing.
Maintenance
OS updates, store policy changes, crash monitoring and new releases.
AI features
In-app assistants, smart search and document or image capture.
How it helps
What can a great app do for your business?
Win and keep customers
An app people open every week keeps your brand in their pocket — and makes switching to a competitor harder.
Move service onto the phone
Onboarding, payments, claims and support customers can finish themselves, any time, without a branch or a call.
Reward loyalty
Points, offers and challenges that give customers a reason to come back, linked to a card, a policy or a store.
Stay current, safely
Regular updates for every new iOS and Android release, with the security standards banks and insurers require.
Our work
What have we built for our clients?
Pick a project to read what the client brought us, what we built, and what changed.
All case studiesJS Investments
From curiosity to investing, in one app
- Before
- For many people, mutual funds feel complicated. Opening an account means paperwork, and choosing the right fund means decoding unfamiliar terms.
- What we built
- A mobile investing app that helps people open an account, choose a fund and start investing in minutes.
- The result
- JS Investments now has a modern digital channel where people can go from curiosity to investing in one app, and a portal that puts the business in control of its funds, content and customer communication.
How we work with you
What does a mobile app project look like?
Step by step, from the first conversation to a system your teams rely on — and we stay after launch.
Step 1 of 5
Discovery
Users, goals, features and the systems the app connects to.
What you get
A clear plan: who the app is for, what it must do, and what it connects to.
Quality and security
How do we make sure it keeps working?
The standards banks and insurers hold us to, on every project.
Built to last
- Reviewed and tested before every release.
- Designed for the load and the security your industry needs.
- Documented, so it never depends on one person.
Safe with your data
- Access limited to what each person and system needs.
- Security reviews and audit trails, as banks and insurers expect.
- Hosting in your own cloud or region where that matters.
Kept running after launch
- Monitoring, updates and fixes — not just a launch.
- The people who built it stay to run and improve it.
- You decide how much we run, and how much your team does.
Choosing a partner
What should you ask any partner?
Questions worth asking whoever you talk to — with our answers.
Have you built apps like ours before?
For banks, insurers, investment firms and retailers — from KYC and investing to loyalty and shopping. See the work above.
Will it work on both iOS and Android?
Yes. We build both from one React Native codebase, with the feel of a native app on each.
Who publishes it to the app stores?
We handle submission, review and the store listing, and keep up with store policy changes.
How do we keep our customers’ data safe?
Secure storage, certificate pinning and device checks, built to the standards of regulated industries.
What happens after launch?
We keep it current — OS updates, crash monitoring and new features — with the people who built it.
Can we start small?
Yes. Start with a free consultation; we will scope a first version that delivers value early.
Technology
What do we build with?
Proven tools we know well, chosen for each project.
- React Native
- AR and VR
- Node.js
- NestJS
- Java
- Spring Boot
- PHP
- Laravel
- Python
- Go
- REST APIs
- GraphQL
- PostgreSQL
- MySQL
- MongoDB
- Redis
- Elasticsearch
- Kibana
- AWS
- Microsoft Azure
- Google Cloud
- DigitalOcean
- Docker
- Kubernetes
- Terraform
- GitHub Actions
- GitLab CI
- Jenkins
- Nginx
- Firebase
- OneSignal
- Google Analytics
- Google Maps Platform
- D3.js
- Prometheus
- Grafana
- New Relic
- Firebase Crashlytics
Insights
What have we learned along the way?
Practical reading for business teams, from our work.
All insights
Frequently asked questions
[1]Does FetchSky build for both iOS and Android?
[2]How long does it take to build a mobile app?
[3]Do you publish the app to the App Store and Google Play?
[4]Do you maintain apps after launch?
[5]Do you build apps for Shopify stores?
What should your app do?
Tell us about your users and what the app needs to connect to. We’ll set up a free consultation and follow up with a detailed proposal.
