Android and iOS apps
A single codebase for both stores with paid-app performance: 60–120fps, optimized builds and store publishing already included.
Independent technology studio7 products live
We build Apps.
We design Experiences.
Android and iOS apps, modern websites and landing pages with AAA performance and future-facing design.
3 apps on Google Play4 websites in productionBilingual PT/ENDesign + engineering in-house
About
Who is behind Pryvion
An independent studio that pairs software engineering with design to ship digital products at big-tech standard.
Pryvion Studio was born out of an obsession with detail. Every project is treated as a premium product — from architecture to the last pixel.
We work with current technology and an absolute focus on performance, accessibility and experience. Small in size, giant in quality.
Android and iOS apps
Modern websites
Landing pages
AI integration
Services
What Pryvion delivers
From concept to launch. End-to-end solutions for apps and web.
Websites and stores
Next.js with fast rendering, technical SEO and payments that actually work — local or international.
Landing pages
Pages built to convert: instant loading, direct copy and every click measured.
AI integration
Assistants, content generation and automations — with quotas, rate limiting and keys kept on the server, never on the user's device.
Launch and growth
Store listing, compliance, Search Console, indexing and monetization. Delivered live, not as a zip file.
FlutterDartNext.jsReactTypeScriptThree.jsFirebaseRiverpodTailwindVercelCloudflareStripeMercado PagoGoogle PlayIA generativaFlutterDartNext.jsReactTypeScriptThree.jsFirebaseRiverpodTailwindVercelCloudflareStripeMercado PagoGoogle PlayIA generativa
Applications
Published apps, not prototypes
Our own products on Google Play — every screen below is the real app running.
Live on Google Play
Lux Veritas
Bible · Apocrypha · AI oracle
The complete Bible, 95 apocryphal books and the manuscripts behind them — with natural-voice narration and an AI oracle that returns the right passage for how the reader feels.
- 171 texts, bilingual PT/EN
- Natural-voice narration, verse by verse
- AI oracle anchored in the biblical text
- Subscription and credits validated server-side
171
texts
2
languages
IA
oracle
FlutterFirebaseIAÁudioIAP
Live on Google Play
Codex Mythologia
478 deities · 23 pantheons
A bilingual encyclopedia of the gods of every civilization: original art for each deity, narration, a rune decoder, quizzes and an oracle that discusses the myths.
- 478 entries with original in-house art
- 23 pantheons, from Norse to Yoruba
- Narration, quizzes and rune decoder
- Mirrored web version at codexmythologia.site
478
deities
23
pantheons
2
languages
FlutterIAÁudioArte própria
Live on Google Play
EduKids+
Kids learning that adapts
A bilingual, adaptive study app for children: difficulty follows each child's performance. Approved for the Google Play Families programme.
- 8 games across 9 subjects, 42 lessons
- Difficulty adapts to performance
- Bilingual PT/EN with audio
- Families policy compliant, filtered ads
9
subjects
42
lessons
8
games
FlutterKidsAdMobIAP
In final review
Codex Monstrorum
Creatures, legends and monsters
The bestiary of the Codex line: creatures from around the world with original art, an origin map, narration and instant search. In final review on Google Play.
- 357 creatures with original art
- World map of legend origins
- Natural-voice narration PT/EN
- AI scribe with protected quota
357
creatures
2
languages
1.1.0
version
FlutterIAÁudioArte própria
Coming to Google Play
In final review
Codex Angelicus
Angels, demons and hierarchies
Angels and demons from every tradition, with hierarchies, a table of correspondences, PDF dossier and narration. In final review on Google Play.
- Complete celestial and infernal hierarchies
- Table of correspondences per entity
- PDF dossier and PT/EN narration
- AI scribe with protected quota
208+
entries
2
languages
PDF
dossier
FlutterIAÁudioIAP
Coming to Google Play
Websites
Live websites, on their own domains
No mockups: every screen below was captured from the live production site.
0
Apps on Google Play
0
Websites live
0
Apps in final review
0
Languages per product
Process
How a project runs here
No invisible steps: you know where the product stands every week.
01
Discovery
I listen to the idea, research what the market already offers and come back with the scope worth building.
02
Design
Identity, screens and motion defined before any logic — you approve the look before the code exists.
03
Engineering
Built with tests, clean static analysis and security from the first commit.
04
Live
Store or domain launch, monitoring, fixes and continuous evolution.
Why us
Why Pryvion
What sets us apart from an average developer.
01
Real products, not course projects
Everything here is published, with real users, real payments and store approval.
02
Bilingual by default
Every product ships in Portuguese and English, multiplying reach without rebuilding the app.
03
Security taken seriously
Nonce-based CSP, server-side keys, per-IP rate limiting and purchase validation off-device.
04
Performance as a requirement
Optimized images, lean bundles and measured release builds — not just pretty, fast.
Contact
Let's build something extraordinary
Tell us your idea. We reply fast.