YUAL, Inc. Verified Company

The project is a crypto rewards platform built from scratch for users who complete tasks, surveys, app installs, video ads, and promotional offers to earn SXT credits redeemable for cryptocurrency. The platform needed to aggregate offers from multiple external providers, keep users engaged through a gamified loyalty system, prevent fraud across provider postbacks, and support secure crypto withdrawals, while still feeling simple for end users. YUAL designed and developed the full product architecture, including a multi-provider offer aggregation engine, access gating by email confirmation, VPN/proxy status and country eligibility, and dedicated Featured Offers and Featured Surveys pages. The reward economy runs on SXT and includes a 42-level VIP Club based on Offer Points, where user bonuses grow progressively from 0.5% to 90%. Bonus records are highlighted in transaction history and completed offers, while weekly and monthly leaderboard events use structured prize-pool logic to drive retention. Fraud prevention was built into the platform from the beginning. Provider postbacks are verified through HMAC signatures, fraud scoring is handled via VPNAPI, and the system includes VPN/proxy detection, new-IP confirmation, block-status checks, country-based rules, and stored postback replay for operational review. The crypto withdrawal flow supports BTC, ETH, USDT, BNB, SOL, and XRP with wallet validation, fee calculation, fiat-value display, webhook-based payment integration, withdrawal limits, and admin approval workflows. The platform also includes affiliate and referral mechanics, Socket.IO real-time notifications, and a full RBAC admin panel for user management, offer moderation, fraud review, withdrawal approvals, permissions, and audit logging. Result: a launch-ready crypto rewards platform with offer aggregation, loyalty mechanics, fraud controls, six-currency withdrawals, real-time notifications, admin tooling, and documentation for long-term maintainability. Stack: TypeScript, NestJS, Next.js, React, PostgreSQL with Prisma, Redis, Socket.IO, tRPC, Tailwind CSS.

We're a small cosmetology clinic in Sacramento, and we were drowning in spreadsheets, WhatsApp groups, and three different booking tools that didn't talk to each other. I started getting quotes for a custom internal system. One vendor wanted $10k just to scope it. Two others quoted 2–3x what yual eventually charged. A couple of "cheap" ones gave timelines that made no sense for the scope. yual was different from the first call. Instead of selling me a discovery phase, they walked me through what would actually be complex, what was straightforward, and — honestly — which features I thought I needed but didn't. We cut a few things from my original wishlist that they argued would just bloat the system and slow us down. They were right. The platform we ended up with is exactly what the clinic needs and nothing more. Final stack is JavaScript/Node/React/MongoDB. Built from scratch over 4 months, on budget, on time. We migrated 300+ client accounts in the first month, scheduling is roughly 2x faster, and the no-show rate dropped after reminders went live. Five months in daily use now and nothing has broken. What stood out: they pushed back on me when it made sense. That's rare.

We brought yual in to build a full-featured cryptocurrency casino platform from the ground up, covering backend, web frontend, integrations, and infrastructure. yual handled end-to-end development on a microservices architecture: authentication and account system (registration, email verification, 2FA, JWT sessions, role-based access), game aggregation with multiple third-party providers and a tournament system with weekly/monthly prize pools, payment processing for both crypto (BTC, ETH, major altcoins) and fiat with real-time transaction handling, marketing and analytics integrations (Google Analytics, Keitaro, affiliate/referral system), a Centrifugo-powered real-time layer for live rewards, balance updates and leaderboards, fraud prevention and transaction monitoring, an internal admin panel, and full CI/CD with Docker-based containerization. Tech stack: PHP 8.2, PostgreSQL, Docker, Elasticsearch, RabbitMQ, Redis, Centrifugo. The platform launched on time and remained stable from day one, with no critical production incidents across core systems. In the first months we saw 6,000-9,500 daily unique visitors, 70,000+ bets processed per day at peak, 900+ concurrent real-time users handled without degradation, 1,200+ games connected across providers, average session duration above 3 minutes, and a 240 GB database with a clean audit trail and proper indexing from the start. What stood out. First, the depth of the integrations work. Connecting multiple game providers, payment processors, affiliate platforms, and analytics tools in a way that actually holds together under load is not trivial - yual did it without creating a fragile mess of one-off connectors. Each integration was isolated and replaceable, which matters a lot as the platform grows. Second, the real-time layer: live reward collection, balance updates, and leaderboard refreshes through Centrifugo worked cleanly from launch. They also understood which technical decisions had product impact - isolated integrations made it much easier for us to expand the catalog and test new providers later. Overall, a strong partner. yual delivered on scope, on time, and on budget, and the platform has been stable since launch. We would recommend them without hesitation to teams building complex, high-load products - and we plan to keep working with them.