SFDIFY is a fintech app development company. We build and run money software of our own: USTAXX, a tax filing portal and app from an IRS-authorized e-file provider; CostRefund, which watches Costco receipts for price drops; and the settlements and bonus payouts inside Yolda. We bring that experience to fintech products for clients.
Encrypted document upload, e-signature, status tracking and private messaging, like the USTAXX portal.
Filing flows, document checklists, deadline countdowns and preparer review tools.
Subscriptions, invoices and payouts with Stripe and other providers, including earned pay sent to a bank.
Receipts, statements and tax forms read by OCR and AI into structured, checkable data.
Learn moreConsumer apps that watch prices, spending or deadlines and alert people at the right moment, like CostRefund.
Learn moreStaff consoles with roles, audit trails and the views your support and compliance teams need.
Tax clients send documents as photos, PDFs and emails, often in their second language, and rarely know what is still missing or where their return stands.
Clients upload, sign and track their return in their own language, and preparers work from one record, for an IRS-authorized e-file provider serving all 50 states.
See USTAXXWho pays, who gets paid, which documents move, and the rules around each step.
Flows, permissions and security agreed before building, with your compliance advisers involved.
The app, portal and backend built in short cycles and tested with real scenarios.
Store releases, monitoring and support tools in place, then improvements from real use.
Fintech apps cost more than typical apps because of security and integrations. These factors matter most.
Each provider such as Stripe, a bank data API or a payout service adds integration and testing.
Encryption, access controls, audit trails and device security add design and review time.
A web portal, an iPhone app and an Android app sharing one backend is more work than one of them.
Reading receipts, statements or tax forms reliably needs OCR, AI and a test set of real documents.
Rules for your product, set with your legal and compliance advisers, shape flows, records and retention.
For how app budgets are built, read how much an app costs to build.
The portal and app behind an IRS-authorized e-file practice. Clients ask USTAXX AI, track deadlines and follow their return in nine languages.
Learn moreUpload Costco receipts and get an alert when a purchase may qualify for a price adjustment. Web, iPhone and Android.
Learn moreThe AI-native TMS for trucking. Its AI reads rate confirmations into loads, watches every CDL and medical-card date, and answers questions about your numbers.
Learn moreWrites and publishes a useful blog post to a business's site every day and runs its Instagram. SaaS from $89 a month.
Learn moreIt designs and builds software that handles money: payments, billing, payouts, tax, accounting, savings and the secure portals and documents around them. SFDIFY builds and runs fintech products of its own, including USTAXX and CostRefund.
We build with security practices such as encryption, access controls and audit trails, and we design flows with your legal and compliance advisers. We do not provide legal advice or hold financial licenses for clients.
Stripe for subscriptions, invoices and payouts, which we run in our own products, and other providers where your product needs them.
Yes. USTAXX has a web portal, an iPhone and Android app and a staff admin, all sharing one record. We build the same way for clients.
Yes. CostRefund reads Costco receipts and USTAXX sorts uploaded tax documents with OCR and classification. We test accuracy on real documents before launch.
Book a free first consultation and describe the money flow your product needs. Projects typically start 2 to 4 weeks after the first call.
How much does it cost to create an app? Estimate it step by step: app tiers, team choice, native vs cross-platform, maintenance and AI features.
Learn moreChoose between a freelancer, in-house team, or app development studio to build your business app.
Learn moreNative vs cross-platform apps compared on cost, performance, timeline, and maintenance, plus when native wins and when a progressive web app is enough.
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