BudgetFitter.
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Flagship Multi-Surface Fintech & Deal Platform
BudgetFitter UK is an enterprise-scale smart consumer ecosystem engineered to eliminate the UK "Lazy Tax". Spanning a high-speed web platform, cross-platform mobile apps for iOS and Android built on Flutter 3, an MV3 Chrome extension, and an autonomous AI agent layer powered by the Model Context Protocol (MCP).
Unified user profiles and wallet balances synchronized seamlessly across Web, iOS, Android, and browser extension.
Automated multi-network affiliate postback ingestion (Awin, Impact, CJ) with HMAC cryptographic validation.
Proprietary BudgetFitter Score (BFS) auditing merchant reliability, expiration telemetry, and authentic voucher codes.
JSON-RPC 2.0 streaming protocol endpoints enabling AI assistants to autonomously query deals and verify promo vouchers.
Complete 2026 Web Platform Architecture
Explore the live production web platform architecture. Featuring the hero spotlight partner carousel, curated daily drops, SaaS perks, and live trust audit badges across both clean Light Mode and Dark Mode layouts.
Flutter 3 Cross-Platform Mobile Applications
Published natively on the Apple App Store and Google Play, the BudgetFitter mobile client shares 95%+ core logic across platforms. Equipped with real-time push notifications, natural language intent search, and zero-threshold reward claiming, it delivers a frictionless native experience.
Automated 24-hour flash perk cycle with countdown timers and automated validation. Expired merchant codes are purged instantly.
Powered by embedded LLM embeddings, users search in natural English (e.g. "eSIM for Greece") and receive synthesized deals directly.
Complete simple shopping tasks and unlock instant digital gift cards for Amazon, Apple, Uber, or Deliveroo with zero payout thresholds.
Asynchronous Affiliate Webhook Reconciliation
The financial backbone of BudgetFitter is a bespoke asynchronous transaction reconciler. Connecting directly into global affiliate networks including Awin, Impact, CJ, and Rakuten, it maps outbound click identifiers with incoming conversion webhooks to guarantee exact user attribution and automated wallet balance funding.
Sub-millisecond redirect generating cryptographically signed session tokens and logging device metadata.
HMAC signature verification across incoming network postbacks with currency normalization and order validation.
Automated rev-share allocation depositing funds into the member's virtual wallet under pending/confirmed states.
Zero-threshold digital gift card redemptions dispatched via automated API pipelines with zero redemption fees.
Autonomous AI Agent Protocol & Tool Server
BudgetFitter is designed for the modern AI web. Implementing Anthropic's Model Context Protocol (MCP) and public llms.txt manifests, autonomous AI agents (Claude, ChatGPT, Gemini) can discover, query, and verify live retail promotions directly via structured JSON-RPC.
Provides search_deals, get_voucher_code, and verify_merchant_rate directly to AI models.
Standardized markdown discovery index enabling search engines and web crawlers to parse complete merchant voucher taxonomies without DOM scraping.
Server-Sent Events (SSE) and HTTP chunked transport deliver real-time pricing and voucher health telemetry in under 80 milliseconds.
Fintech Brand Tokens & Visual Identity System
The visual identity of BudgetFitter bridges high-trust fintech authority with modern consumer agility. Grounded in precise contrast tokens, standardized IBM Plex Sans typography, and authentic vector brand marks.
Fluid editorial headlines engineered for high-confidence authority across desktop heroes and mobile viewports.
Standardized cross-platform grotesque optimized for complex discount terms, voucher tables, and deal cards.
Clean rounded semantic symbols utilized across native bottom navigation bars, category tags, and trust indicators.
Shared core Dart business logic across iOS and Android Flutter 3 builds, backed by MV3 Chrome background service workers and Edge-cached PHP APIs.
Asynchronous webhook reconciliation calculating affiliate rev-share splits, virtual credit deposits, and automated zero-threshold gift card redemptions.
Native Streamable HTTP transport (JSON-RPC 2.0) serving llms.txt discovery, OpenAPI 3.0 schema, and real-time deal retrieval tools directly to AI agents.
Uncompromised clean aesthetics replacing traditional affiliate pop-under spam with curated BFS trust audit scores and instant copy-and-go voucher codes.