APIs · head to head
Dwolla vs Tuum

Dwolla
APIs
Account to account payment API for ACH, RTP and FedNow with pay by bank and instant payment routing
- From
- On request
- Rated
- -

Tuum
APIs
Modular core banking platform from Estonia, formerly branded Modularbank
- From
- On request
- Rated
- -
The short version
- Each has a real cost: Dwolla nothing is published: there are no per-transaction rates, no platform fee and no minimum on the pricing page, so every buyer negotiates blind and small platforms have no way to sanity check what they are quoted.; Tuum it is a smaller, younger company than Mambu, so it has fewer live reference deployments and a shorter track record to evaluate risk against.
- They diverge on capability: Dwolla covers ACH transfers, Tuum covers Modular product structure.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Dwolla and Tuum actually diverge.
Identical on both: starting price (On request), pricing model (quote), free tier (No), user rating (Not yet rated), category (APIs).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Dwolla
- ACH transfers
- Instant payments
- Rail orchestration
- Bank account verification
- Dwolla Balance
- Webhooks and reconciliation
- Pay by bank
- White label flows
Only in Tuum
- Modular product structure
- Low-code integration middleware
- Cloud-agnostic deployment
- Multi-currency real-time accounts
- Cards and lending modules
- Faster migration timeline
What people use each for
The jobs each tool is most often brought in to do.
Dwolla
- An insurance or lending platform disbursing funds to customer bank accounts where card payout fees would destroy the marginnot Tuum
- A B2B marketplace collecting large invoice payments by bank transfer rather than paying interchange on cardsnot Tuum
- A payroll or gig platform that needs to pay workers instantly and wants the rail chosen automatically by receiving bank capabilitynot Tuum
- A property management system collecting rent by ACH with verified bank accounts and reliable return handlingnot Tuum
Tuum
- A bank wanting to migrate specific banking products to the cloud within months rather than replacing its entire core at oncenot Dwolla
- A fintech in the DACH region or Middle East wanting a European core banking vendor with regional expansion focusnot Dwolla
- An institution wanting low-code middleware to connect new modules to an existing legacy core rather than a full rebuildnot Dwolla
- A company researching "Modularbank" that needs to confirm it is the same company now branded Tuumnot Dwolla
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Dwolla
- Nothing is published: there are no per-transaction rates, no platform fee and no minimum on the pricing page, so every buyer negotiates blind and small platforms have no way to sanity check what they are quoted.
- It is payments only, with no deposit accounts, card issuing or general ledger, so companies embedding financial products need at least one further vendor and the reconciliation between them.
- Instant payment reach depends on the receiving institution supporting RTP or FedNow, so a meaningful share of payouts still fall back to ACH timing regardless of what the API can do.
- ACH returns and administrative returns remain your operational problem, and platforms new to bank rails routinely underestimate the customer support load that failed debits generate.
- Access to instant rails runs through Dwolla banking partner, which reintroduces a bank dependency into a product that otherwise avoids sponsor bank programme risk.
Tuum
- It is a smaller, younger company than Mambu, so it has fewer live reference deployments and a shorter track record to evaluate risk against.
- The 2022-era rebrand from Modularbank to Tuum means older funding records, case studies and press coverage appear under a different name, complicating due diligence for anyone unaware of the change.
- Pricing is entirely unpublished, requiring a sales conversation to budget against competing composable core vendors.
- Its geographic expansion into DACH and the Middle East is comparatively recent, so support depth and local regulatory expertise in those markets are less proven than in its home Baltic and Nordic base.
- As with any core banking platform, choosing Tuum is a multi-year infrastructure commitment; switching cores after implementation is a major undertaking regardless of how modular the initial adoption was.
Pricing, plan by plan
Dwolla
On request- Dwolla Payment API$undefined/year
- Custom pricing built around transaction volume, rails used and integration needs
- No published per-transaction rates or platform fees
- Volume based plans for platforms and enterprises
Tuum
On request- Tuum$undefined/year
- Subscription and module-based pricing, not published
- Custom quote required via sales
Which should you pick?
Choose Tuum if
- You need modular product structure.
- You work on Web, API.
- You also want low-code integration middleware.
Questions people ask
- Is Dwolla or Tuum better?
- Neither clearly leads. Dwolla starts at On request and Tuum at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Dwolla or Tuum?
- Dwolla starts at On request and Tuum at On request.
- Does Dwolla or Tuum run on more platforms?
- Dwolla runs on Web. Tuum runs on Web, API.
- What is Dwolla best used for?
- Dwolla is most often used for an insurance or lending platform disbursing funds to customer bank accounts where card payout fees would destroy the margin, a b2b marketplace collecting large invoice payments by bank transfer rather than paying interchange on cards, a payroll or gig platform that needs to pay workers instantly and wants the rail chosen automatically by receiving bank capability, a property management system collecting rent by ach with verified bank accounts and reliable return handling. Of those, an insurance or lending platform disbursing funds to customer bank accounts where card payout fees would destroy the margin and a b2b marketplace collecting large invoice payments by bank transfer rather than paying interchange on cards are not what Tuum is typically brought in for.
- What can Dwolla do that Tuum cannot?
- Dwolla covers ACH transfers, Instant payments, Rail orchestration, Bank account verification. Tuum covers Modular product structure, Low-code integration middleware, Cloud-agnostic deployment, Multi-currency real-time accounts.
Answered from the vendors’ own pages
Dwolla: What does Dwolla cost?
It does not publish anything. Pricing is custom and built around volume, rails and integration. Establish the monthly platform fee and any minimum before negotiating per-transaction rates.
Tuum: Is Tuum the same company as Modularbank?
Yes, Modularbank rebranded to Tuum; it is the same company and platform.
Dwolla: Does it support instant payments?
Yes, through both the RTP network and the FedNow Service, with automatic selection based on the receiving bank. Where neither is supported, payments fall back to ACH.
Tuum: Where is it strongest geographically?
Its base is Estonia and the Nordic and Baltic region, with newer expansion into DACH and the Middle East.
Dwolla: Is Dwolla a bank?
No. It is a payments platform that works through banking partners. It does not offer deposit accounts or card issuing.
Tuum: Is pricing published?
No, subscription and module pricing require a sales conversation.
Dwolla: How does bank account verification work?
Either instantly through open banking connections or by micro-deposit verification, which takes a day or two but works where instant linking fails.
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