Technology
How we build
- 2 live products
- Android & Web
- AI + human guidance
Platforms
Where our products run
Android
Chitly is available on Google Play.
Web
chitly.live and astrosaathi.live work in any modern browser.
What we build with
Core capabilities
Each one is proven in our own products.
AI & language models
Powers the clearly labelled AI astrologer on AstroSaathi
Real-time voice & video
Powers listener calls on Chitly and consultations on AstroSaathi
Mobile apps
Chitly on Android, built with Flutter and Kotlin
Web platforms
chitly.live and astrosaathi.live
Backend & data
Node.js and Python services on MongoDB and Redis
Trust & safety by design
AI labelling, anonymous options, crisis resources
Trust and Safety: Trust & safety by design
Architecture
How the pieces fit together
A simplified view of how a request travels from our apps to the cloud.
Diagram in text
- Users: Android app — Chitly on Google Play for Android phones.; Web — chitly.live and astrosaathi.live in any modern browser.
- API layer: Node.js — Real-time APIs and connection handling.; FastAPI — Python APIs for AI services.
- Services: Real-time chat & calling — Chat, voice and video conversations on Chitly and AstroSaathi.; AI astrologer — Answers astrology questions on AstroSaathi, always labelled as AI.; Kundli & Panchang features — Birth charts (Kundli), daily horoscopes and the Panchang on AstroSaathi.; Background jobs (Celery) — Background jobs and scheduled tasks.
- Data: MongoDB — Flexible storage for app data.; Redis — Caching, sessions and real-time state.
- Cloud: Cloud hosting — Where our APIs, services and data run.
Hover, tap or focus a box to see what it does.
AI at Praxxel
AI at Praxxel
AstroSaathi's AI astrologer is always clearly labelled as AI, so people know when they are talking to software rather than a human astrologer.
AI guardrails
- Always labelled as AI
- No medical, legal or financial advice
- No guaranteed predictions
Real-time
Chat, voice and video
Chitly conversations
People connect with listeners through anonymous chat, audio and video calls.
AstroSaathi consultations
Users consult human astrologers through chat, voice and video consultations.
Tech stack
Tools we build with
Mobile
- FlutterCross-platform mobile app interfaces
- KotlinNative Android features and integrations
Web
- ReactInteractive web experiences for our product sites
- TypeScriptType-safe code across web and server
Backend
- Node.jsReal-time APIs and connection handling
- PythonAI, data processing and backend services
- FastAPIFast Python APIs for AI services
- CeleryBackground jobs and scheduled tasks
Data
- MongoDBFlexible storage for app data
- RedisCaching, sessions and real-time state
AI/ML
- TensorFlowBuilding and running machine-learning models
- PyTorchModel experimentation and inference
- LangChainOrchestrating language-model workflows
- GeminiLarge language model capabilities
Our process
How we build products
- 1
Research
We start with the people a product is for: what they need, and what it should never do.
- 2
Design
We design simple, accessible screens and make limits clear, such as labelling AI as AI.
- 3
Build
We build the core experience first, across Android, the web and our backend services.
- 4
Test
We test features on phones and in browsers before they reach the people who use them.
- 5
Launch
We release on Google Play and the web, and say plainly what each product is not.
- 6
Improve
We listen to feedback and improve our products in small, careful steps.
Engineering
Engineering principles
How we aim to work. These are principles, not certifications.
Quality
Small, careful changes, tested before they reach people, and fixes for what people report.
Security
Security is part of every feature, and every report to security@praxxel.com is taken seriously.
Privacy
We aim to ask only for the data a feature needs, and to keep people in control of it.
Accessibility
We design for keyboards, screen readers and small screens from the start.
Performance
We keep apps and pages light, so they work well on everyday phones and mobile data.
Security
Security and privacy engineering
Found a vulnerability? Email security@praxxel.com
Next steps
Build with us
Interested in the engineering behind Chitly and AstroSaathi?
