iOS and Android apps
Native apps in Swift, Kotlin and Java or cross-platform with Flutter and React Native — with the same engineering behind our ScanWallet, EarnBoard and MyCripto apps.
See our appsWeb · iOS · Android · Blockchain
Software that
simplifies
your business
We build iOS and Android apps, web systems, online stores, integrations and blockchain solutions — with clear architecture, well-kept code and close support, from idea to launch.
- Native and cross-platform apps
- Publishing on the App Store and Google Play
- Reply within 1 business day
- own iPhone apps
- 3
- ScanWallet, EarnBoard and MyCripto Portfolio
- to reply to a message
- 1 business day
- projects and support in both languages
- PT · EN
Services
What we do
From the app on the phone to the system in the cloud, from the first prototype to maintenance in production — one team, accountable for the result.
Web systems and portals
Portals, admin dashboards, SaaS and REST APIs, with automated deploys, monitoring and security best practices.
App back-ends
APIs, sign-in, push notifications, payments and an admin dashboard so your app works end to end.
Store publishing
Developer accounts, store listings, screenshots and App Store and Google Play review, plus every update.
E-commerce and online stores
Online stores with catalog, cart, payments and shipping, integrated with your ERP and payment providers.
Integrations and APIs
We connect ERPs, payment providers, legacy systems and message queues — in Java, PHP or Node.js.
Cloud and DevOps
Infrastructure on AWS, Azure or Google Cloud, with Docker, CI/CD, monitoring and costs under control.
AI and automation
AI assistants, automatic document reading and automation of repetitive tasks, integrated into your system.
Desktop applications
Internal systems, utilities and hardware integration, focused on performance and offline use.
Product design (UX/UI)
Clickable prototypes and clear interfaces, validated with you before the first line of code.
Blockchain and Web3
Tokenization, wallet integration and smart contracts, with attention to security and network costs.
Learn moreMaintenance and evolution
We take over existing systems: fixes, security updates, performance and new features.
Process
How we work
A simple, transparent process: you know what is being done, when it will be ready and what it costs.
First conversation
We understand the problem, the goal and the project constraints.
Proposal
Scope, timeline and price in writing, with deliveries split into stages.
Development
Short iterations you test and approve while following the progress.
Launch and support
We go live, train your team and keep improving the system.
Products
Our own products
Apps we build, publish and maintain — the same engineering we bring to client projects.
App for iOS
ScanWallet
Read-only lookup of balances, tokens and transactions for public addresses on six EVM networks, with the estimated total in US dollars.
See the app
App for iOS
EarnBoard
Tracks yield-bearing crypto investments — flexible Earn, fixed-term Earn and staking — on any exchange, with manual records and data kept only on your iPhone. It does not connect to accounts and does not hold funds.
See the app
App for iOS
MyCripto Portfólio
Consolidated portfolio with average cost and tax support for Brazilian investors: the R$ 35,000 exemption, DARF, the foreign-assets regime and DeCripto tracking.
See the app
App for iOS
VoiceClone
iOS client for VoiceStudio to generate speech, clone voices with consent, transcribe, dub and create audiobooks using your Mac.
See the app
Blockchain
Blockchain with real experience
We have followed the ecosystem from experimental projects to production solutions with real volume. We help companies tokenize, settle and audit value flows with technical responsibility and business sense.
- Web3 and APIs compatible with wallets and industry standards
- Network choice, cost estimates and compliance
- Integration with legacy systems (Java, PHP, Node.js) and messaging
Pioneering integrations
We connect businesses to public and private networks, focused on interoperability and transaction costs.
Contracts and oracles
On-chain and off-chain flows, upgradeable contracts and integration with real-world data.
Security and auditing
Custody best practices, multisig and review of attack surfaces in critical integrations.
Performance
Optimized calls, indexing and an experience where users barely notice the blockchain.
Live prices (CoinGecko)
Could not load prices. Please try again.
BTC
Bitcoin
—
ETH
Ethereum
—
BNB
BNB
—
SOL
Solana
—
ADA
Cardano
—
XRP
XRP
—
Stack
Technologies we master
We pick the tool for the problem, not out of habit — with performance, cost and long-term maintenance in mind.
Back-end
- Java · Spring
- PHP · Laravel · Symfony
- Node.js · TypeScript
Front-end
- React
- TypeScript
- Modern HTML and CSS
Mobile
- iOS · Swift · SwiftUI
- Android · Kotlin · Java
- Jetpack Compose
- Flutter
- React Native
Data and cloud
- AWS
- Azure
- Google Cloud
- Docker
- CI/CD
- MySQL
- Messaging
Blockchain
- Web3
- Smart contracts
- Wallets and oracles
Projects
Projects we have delivered
Examples of the challenges we solve. Names and details remain confidential with each client.
Financial services
Stable integration between the core banking system and settlement flows, with end-to-end monitoring.
Logistics
Event traceability with tamper-proof records and integration with legacy Java systems.
Tokenization and Web3
Hybrid on-chain and off-chain architecture focused on user experience and network costs — from proof of concept to production.
Why us
Why SimplificaDev
SimplificaDev Ltda. builds custom software, iOS and Android apps and integrations — with real engineering and direct contact with the people who build it.
Focused on results
We start from the business goal, not the technology. Every delivery must solve a real problem.
Talk to the builders
You speak with the engineering team directly, no middlemen and no noise.
Transparency
Clear scope, timelines and costs from the proposal, with follow-up at every stage.
Security from day one
OWASP best practices, encryption and access control in every project.
Well-kept code
Clear architecture, tests and documentation so the system can grow without becoming a problem.
Long-term partnership
After launch, we keep providing support, maintenance and product evolution.
Have a project in mind?
Describe the challenge in a few lines. We reply within 1 business day with the next steps.
FAQ
Frequently asked questions
Do you build iOS and Android apps?
Yes. We build native apps (Swift on iOS; Kotlin or Java on Android) or cross-platform apps (Flutter or React Native), depending on budget, timeline and the features the app needs. We also build the back-end and handle publishing on the App Store and Google Play.
How much does a project cost?
It depends on the scope. After the first conversation we send a proposal with price and timeline per stage, with no surprises along the way.
How long does it take?
Larger projects are split into smaller deliveries so you can start using them sooner. Each stage timeline is in the proposal.
Do you take over existing systems?
Yes. We review the current code, point out the risks and propose a plan for fixes and improvements.
Does my company keep the source code?
Yes. At the end of the project we hand over the source code and documentation.
How does support work after launch?
We offer ongoing maintenance: fixes, security updates and improvements agreed with you.
Do you work with clients outside Brazil?
Yes, we work with clients in any country, in Portuguese or English.
Contact
Let's talk
Tell us about your project. We reply within 1 business day.
SimplificaDev Ltda.
Remote service across Brazil and abroad, in Portuguese or English.