01
React Native App Development
iOS & Android from one codebase — native performance, push, maps, payments, offline. Submitted, approved, live.
- React Native
- Expo
- iOS + Android
React Native · MERN · AI Integration
We design and build cross-platform iOS & Android apps in React Native & MERN — with AI built in. Real products, live on both stores, shipped by senior engineers.
Live on the App Store & Google Play · 4+ products shipped · No upfront fee to talk
React NativeExpoTypeScriptNode.jsMongoDBNext.jsPostgreSQLAWSAzureDockerKubernetesTerraformClaudeGPT
App StoreGoogle PlayGoodFirms 5.0GPTClaudeTerraformKubernetesDockerAzureAWSPostgreSQLNext.jsMongoDBNode.jsTypeScriptExpoReact Native
Proof, not promises
Real apps. Real results.
Live on the stores today.
4+
Apps live on App Store & Play Store
See the apps →
35%
More downloads (creator marketplace)
Read the case study →
40%
Less payroll admin (HR platform)
Read the case study →
30+
Countries served
Where we work →
Reviewed on GoodFirms · ★★★★★ 5.0 verified client review
What we value
How we work.
Ship over slideware.
Working software every week beats a perfect plan.
Senior engineering only.
No juniors. All code is written by experienced engineers.
Honest partnerships.
Transparent advice, even when that means declining a project.
What we do
One team, from idea
to App Store.
Mobile-first, AI-ready, senior-only. We own design, build and launch so you ship faster with fewer moving parts.
02
MERN-Stack Backends
MongoDB, Express, React, Node — the API, auth, dashboards and real-time infrastructure your app runs on, built to scale.
- Node.js
- MongoDB
- Next.js
- AWS
03
AI Integration
Claude & GPT features that earn their place — AI fare prediction, smart matching, assistants, RAG.
Predicting fare… £12.40
- Claude API
- GPT
- RAG
How we work
Five steps. No surprises.
- 01
Discover
Goals, scope, the metric to move. Fixed proposal in 48h.
- 02
Design
Clickable UX before a line of code.
- 03
Build
Weekly working software, in your tools.
- 04
Launch
App Store & Play Store submission, done for you.
- 05
Scale
Iterate on real usage; own the ops.
Selected work
Apps we've shipped.
Why founders pick us
Less risk. Faster ship.
Senior hands only.
Ship in weeks, not quarters
A focused MVP on both stores in 6–10 weeks. You see working software every week — no black box.
Senior engineers, no juniors
The people on your call are the people writing the code. 5+ years commercial, store-proven.
Fixed scope, fixed price
A clear proposal within 48 hours of our call. You know the number before you commit a penny.
You own all code & IP
NDA on request
Free intro call, no upfront fee
Het Soni · Founder & Lead Engineer
Who you'll work with
Het Soni — Founder & Lead Engineer
“Ship over slideware.”
5+ years building and shipping commercial apps — React Native, MERN and AI — live on the App Store and Google Play. The senior engineer who scopes, builds and ships your product is the person you talk to, not a sales rep who hands it to juniors.
Working across UK, US, UAE and India time zones for real-time collaboration, with transparent fixed pricing agreed before a line of code is written. More about how we work →
Connect on LinkedIn →What people say
Trusted by clients
and collaborators.
5.0GoodFirms · ★★★★★Verified client review
★★★★★ 5.0A 5.0-rated engagement for the Sales Automation project — Mobile App Development, on a fixed-price build.
Satyam RathaurVerified client review · GoodFirms
Free guides & tools
Scope it before you build it.
Calculator
App Cost Calculator
Estimate cost →
Free PDF · 8 pages
App Scoping Guide
Get the Guide (Free)
Stack picker
Which stack fits your MVP
Get a recommendation →
Decision tool
Native, React Native or Flutter?
Get a recommendation →
Self-audit
Score your app's security
Run the audit →
Revenue explorer
How will your app make money?
Explore models →
Latest from the blog
From the studio.
Mobile · Engineering · Interactive
React Native's New Architecture in 2026: What Changed and How to Migrate
0.82 disabled the old bridge, 0.85 removed it. Check how urgent migration is for you.
8 min read · September 2026 Read more →
Strategy · FinTech · Interactive
RBI Compliance for Fintech Apps in India (2026): Deadlines and a Readiness Check
AFA and digital lending rules are live in 2026. Score your app against 10 requirements.
9 min read · September 2026 Read more →
Mobile · Engineering · Interactive
React Native Push Notifications: Firebase, OneSignal or Notifee in 2026
OneSignal’s free tier just shrank. See the real cost at your user count.
7 min read · September 2026 Read more →
Have an app idea?
Let's pressure-test it — free.
30 minutes with a senior engineer. We'll tell you what it takes to build, what it costs, and whether we're the right team. No pitch, no obligation.
You own all code & IP · NDA on request · Free intro call, no upfront fee · Fixed scope & price up front
Or email het.soni@soniconsultancyservices.com