Quick Answer
Open USD (OUSD) went live on September 30, 2026 as a dollar stablecoin issued by Bridge, Stripe's stablecoin subsidiary, on Ethereum, Solana, Base and Tempo. It launched with more than $1 billion in seed liquidity from Visa, Mastercard, Stripe, Coinbase and Shopify. For anyone building a payments or wallet app in FlutterFlow, the practical point is that a new token should not be assumed to have a ready-made FlutterFlow integration. The app stays the interface, while a backend or licensed provider handles issuing, redeeming, custody and compliance.
What Is Open USD?
Bridge launched Open USD with governance handled by a consortium called Open Standard. The five founding partners, Coinbase, Mastercard, Shopify, Stripe and Visa, hold equal equity stakes, according to Tech Times, and the wider coalition has grown to more than 200 companies. Most of the reserve interest is shared with partners instead of kept by the issuer. For scale, Tether's USDT is about $184 billion and Circle's USDC about $74 billion, according to DefiLlama, so OUSD is a newcomer. As of October 1, it had no registration under the EU's MiCA rules, which limits where it can be offered.
What Does This Mean for FlutterFlow Apps?
Three things follow for a team shipping a payments screen. First, treat OUSD as one more rail, not a reason to rebuild the app: a payout or checkout flow should be able to swap the underlying token without a redesign. Second, support depends on the provider. Stripe offers the deepest integration, covering Treasury, Issuing, Global Payouts and Crypto Onramp, so apps that already use Stripe have the shortest path. Third, show the user what they are paying with, including the issuer and the redemption terms, in plain language.
How Would a FlutterFlow App Work With a Stablecoin Provider?
FlutterFlow handles screens, navigation and state, while the money movement happens elsewhere. A sensible pattern is this: the app collects the user's request, calls a backend through an API call, the backend talks to the provider, and the app shows the status that comes back.
On the FlutterFlow side, API calls can use GET, POST, PUT, PATCH or DELETE, carry headers such as an authorization token, send a JSON body built from app variables and read values from the response with JSONPath. Calls that share a base URL can be grouped into an API group, and an OpenAPI file can be imported in bulk. For anything that needs a secret, a call can be made private so it runs through a Firebase Cloud Function instead of putting the key inside the app.
Custom actions cover what visual actions cannot. They are written in Dart, return a Future and can use pub.dev packages, which helps when a wallet-connection or signing package fits the product. Private keys and provider secrets should still stay on the backend, and a security review should come before real money moves.
What Should Teams Test First?
Start with a small flow, such as a single payout or a test checkout, and compare fees and settlement time with the current provider. Check what happens when a request fails or a user closes the app mid-payment, because status screens are where payment apps feel unreliable. Ask legal counsel how stablecoin balances are treated for accounting and licensing in each country served.
Which Teams Build the Backend and Apps Around a Stablecoin? 5 Companies Worth Shortlisting
The firms below offer fintech, wallet, blockchain and stablecoin development. Figures come from each company's own website or Clutch profile and are self-reported, so confirm them directly before signing anything.
1. Dev Technosys
Founded: 2010
Team Size: 250+
HQ: Jaipur, India
OWASP secure coding practices built for FinTech companies, the baseline defense against the most common web and API attacks on payment apps
Ranked among payment app development companies in the United States by usawire
Core Services: Stablecoin development, payment app development, crypto wallet development, smart contract development, API and backend integration
Dev Technosys leads this list on proof across two fronts: secure coding for FinTech and independent recognition in payment app development. For a team whose front end is built in FlutterFlow, the practical need is a partner that can build the secure backend, wallet and compliance layers behind it and expose them through clean APIs.
Best For: Teams that need a payment or stablecoin backend with secure coding built in and an API their app can call.
2. Rain Infotech
Rain Infotech, based in Surat, India, publishes a stablecoin development page covering custom architecture, multi-collateral and pegged models, smart contract development and audits, fiat on-ramp and off-ramp integration, and whitelisting with KYC and AML features. It names Ethereum, BNB Chain, Polygon, Arbitrum, Cosmos and Solana, and Clutch shows a 5.0 rating with 23 verified reviews. Rain Infotech suits teams that want a build partner with a stablecoin-specific service page.
3. SpaceDev
SpaceDev, an engineering firm with hubs in Miami, Montevideo, Buenos Aires and Medellin, publishes a dedicated stablecoin page covering mint, burn and redemption contracts, proof of reserve, KYC and AML controls and merchant SDKs on Ethereum, Polygon, Solana, Avalanche and BNB Chain. Clutch shows a 5.0 rating with 44 verified reviews, and the team is reported at roughly 40 to 70 engineers. SpaceDev suits teams that want a focused stablecoin build with reserve proofs.
4. Cheesecake Labs
Cheesecake Labs, a software studio headquartered in San Francisco with an engineering base in Florianopolis, Brazil, lists blockchain services covering tokenization, smart contracts, DeFi platforms and digital wallets, and mentions multichain stablecoin infrastructure on Stellar, Solana, Ethereum and Sui. It appears in Circle's partner directory, and Clutch shows a 4.9 rating from 65 verified reviews, though that profile is led by AI services. Cheesecake Labs suits teams that want a product studio with stablecoin and wallet exposure.
5. Minddeft Technologies
Minddeft Technologies, based in Ahmedabad, India and listed by Clutch as founded in 2015, offers stablecoin development covering consulting, custom builds, security audits, token and wallet integration, KYC integration and whitepaper drafting. Its site reports about 40 team members, and Clutch shows a 4.5 rating from only two reviews, so the sample is thin. Minddeft suits teams that want an India-based partner for a first token launch.
Frequently Asked Questions
Does FlutterFlow support Open USD directly?
Not as a built-in feature that this research could confirm. A FlutterFlow app would normally reach a stablecoin provider through API calls to a backend, with Dart custom actions for anything the visual actions cannot do.
Can a FlutterFlow app hold the keys for a stablecoin wallet?
Generally no, unless it is a purpose-built non-custodial wallet with a full security review. For most payment apps, keys stay with a licensed custodian or a hardened backend, and the app only displays balances and sends requests.
Is Open USD available in the European Union?
As of October 1, 2026, OUSD had no registration under MiCA, so European-regulated platforms could not offer it to customers there. Teams serving EU users should check the current status before building.