SmartExpenditure — Integration & OpenFinance Services

Protocol analysis, data extraction and authorized API implementations for the SmartExpenditure expense manager app.

Starting at $300
OpenData · OpenFinance · Protocol Analysis · OFX / CSV

Turn SmartExpenditure into secure, machine-friendly APIs

We deliver ready-to-run API source code and documentation to extract transactions, import OFX/CSV, sync receipts, enable multi-currency rates and trigger reminders — all with compliance and minimal footprint.

Transaction Extraction — Read and expose historical and recent transactions (calendar view, per-account, per-category) with pagination, filters (date range, category, amount) and safe token-based access.
OFX / CSV Import & Export — Convert app-compatible exports into normalized transaction APIs; provide import endpoints and automatic reconciliation routines.
Attachments & Receipts — Upload and serve receipt images & PDFs via signed URLs; optional OCR metadata extraction for merchant/title detection.
Reminders & Webhooks — Expose scheduled reminders and webhook callbacks for recurring payments, budget thresholds, and statement-close notifications.
Get a Quote See Deliverables

What we deliver

Deliverables

  • Protocol analysis report (API surfaces, data stores, supported formats)
  • Authorized integration plan (consent flows, token lifecycle, local privacy guidance)
  • Runnable source code (Node.js / Python) providing REST endpoints
  • OpenAPI (Swagger) spec, example clients and Postman collection
  • Automated tests, CI scripts and deployment notes

Example API — Transaction sync (pseudo)

POST /api/v1/smartexp/auth/token
Content-Type: application/json

{ "grant_type":"authorization_code","code":"","redirect_uri":"https://your.app/cb" }

GET /api/v1/smartexp/transactions?from=2025-01-01&to=2025-12-31&cursor=abc
Authorization: Bearer <ACCESS_TOKEN>

Response: {"status":"ok","transactions":[{ "id":"tx_001","date":"2025-09-05","amount":-23.45,"currency":"USD","category":"Coffee","account":"Wallet","receipt_url":"https://.../signed" }],"next_cursor":"..."}

POST /api/v1/smartexp/import
Authorization: Bearer <ADMIN_TOKEN>
Content-Type: multipart/form-data
file=@export.ofx

Response: {"imported":120,"duplicates":3}

Integration scenarios we commonly build

Personal finance aggregation (multi-account dashboards), bookkeeping sync (export to QuickBooks/Xero), corporate expense ingestion, automated receipt OCR, budget-triggered webhooks and BI-ready exports (CSV/Excel/Parquet).

Compliance & Security

We only work via customer consent or public/exported data. Implementations include encrypted storage, scoped tokens, signed URLs for attachments, audit logs, rate limiting and guidance for GDPR/CCPA-like requirements.

Technical highlights

  • Support for OFX, CSV imports and native DB extraction
  • Multi-currency normalization and FX provider hooks
  • Webhook delivery, retries, and event signing
  • Optional OCR for receipts (metadata extraction & merchant normalization)
  • SDK examples (Node / Python) and OpenAPI documentation

About our studio

We are a technical service studio specializing in app interface integration and authorized API delivery. Our team has deep experience in mobile apps, fintech, protocol analysis and secure data pipelines. We provide end-to-end delivery: analysis → dev → tests → docs.

  • Global clients — multi-jurisdiction experience
  • Both Android & iOS protocol flows supported
  • Deliverables include runnable source, OpenAPI, test plans
  • Transparent pricing: start from $300, pay after inspection option

Contact & next steps

To start, provide the app package name (you already did), describe which data you need (transactions, receipts, reminders), and whether you have device access or exports. Typical first-phase: protocol scan & feasibility delivered in 2–5 business days.

Contact us

Integration checklist (what we need from you)

  1. Scope: transactions, export/import, receipts OCR, webhooks?
  2. Access method: exported OFX/CSV, test device, or authorized account?
  3. Compliance constraints: retention limits, region-specific rules
  4. Preferred delivery: cloud function, Docker image, or code + docs

Typical timeline

Proof-of-concept (protocol analysis + demo endpoints): 2–5 business days. Full integration with tests and docs: 5–15 business days depending on complexity (OFX parsing, OCR, cross-account aggregation).

📱 Original app — SmartExpenditure (collapsed) — full description

SmartExpenditure is a simple expense manager focused on clarity and usability. Key features:

  • Clean expense & income tracker with calendar overview
  • Interactive charts and custom time reports
  • Integrated calculator, receipt image attachments and PIN protection
  • Custom categories, recurring payment reminders and export/import options
  • Support for over 100 currencies and category-based budget tracking
  • Designed for students, families and personal finance management

Use cases include personal budgeting, family expense tracking and simple bookkeeping. The app emphasizes privacy, offline capability and small footprint.

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