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APIs · head to head

Highnote vs Skyflow

Highnote logo

Highnote

APIs

Card issuing, acquiring and ledger on one platform for embedded payments

From
On request
Rated
-
Full reviewWebsite
Skyflow logo

Skyflow

APIs

Data privacy vault that holds sensitive records outside your own systems

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Highnote card issuing requires a sponsor bank, and that bank sets programme approval, compliance obligations and often minimum volumes, so a small programme can be rejected regardless of technical fit.; Skyflow reported contracts near 195,000 US dollars a year with a platform fee before usage put this out of reach of early stage companies, which are precisely the ones whose architecture is still cheap to change.
  • They diverge on capability: Highnote covers Card issuing, Skyflow covers Tokenised storage.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Highnote and Skyflow actually diverge.

Attributes where Highnote and Skyflow differ
AttributeHighnoteSkyflow
PlatformsWeb, APIAPI, Web, Self-hosted

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 Highnote

  • Card issuing
  • Merchant acquiring
  • Unified ledger
  • Spend controls
  • GraphQL API
  • Programme management
  • Dispute handling
  • Real time authorisation webhooks

Only in Skyflow

  • Tokenised storage
  • Polymorphic encryption
  • Field level access policies
  • Data residency
  • Secure functions
  • PCI scope reduction
  • Detokenisation gateway
  • Audit trail

What people use each for

The jobs each tool is most often brought in to do.

Highnote

  • A marketplace that both pays out to sellers and issues them spend cards, wanting one settlement ledgernot Skyflow
  • A vertical software company embedding card acceptance and card issuing for the same customer basenot Skyflow
  • A fintech launching a commercial charge card programme with custom authorisation logicnot Skyflow
  • A platform replacing separate issuing and acquiring vendors to remove cross system reconciliationnot Skyflow

Skyflow

  • A fintech that wants card and bank account data out of its own infrastructure so its application servers leave PCI DSS assessment scopenot Highnote
  • A company entering India or the EU with data localisation obligations that would otherwise require standing up regional databases and operationsnot Highnote
  • A health technology business that needs protected health information isolated from the analytics stack while still supporting aggregate reportingnot Highnote
  • An engineering team that wants support agents to see masked identifiers and payment services to see real ones, enforced centrally rather than in every servicenot Highnote

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Highnote

  • Card issuing requires a sponsor bank, and that bank sets programme approval, compliance obligations and often minimum volumes, so a small programme can be rejected regardless of technical fit.
  • Pricing is entirely quoted, including platform fees, per active card charges and monthly minimums that do not appear on the website, so the true cost per card is only visible late in a sales process.
  • Interchange sharing is the real revenue model for most customers, and the split is negotiated, capped for regulated debit under the Durbin amendment and sensitive to your spend mix, so revenue projections built on headline interchange rates overstate income.
  • Running issuing and acquiring with one provider concentrates risk: an outage or a compliance action affects both money in and money out at the same time.
  • Highnote is a younger company than the established issuer processors, so long term programme continuity, network certifications in new geographies and international coverage are thinner than the incumbent alternatives.

Skyflow

  • Reported contracts near 195,000 US dollars a year with a platform fee before usage put this out of reach of early stage companies, which are precisely the ones whose architecture is still cheap to change.
  • Every read of a protected field becomes a network call to a third party, so latency and an external availability dependency enter paths that were previously local database reads, and outage planning has to account for a vendor you do not control.
  • Analytics and joins on vaulted data are constrained; work that was a simple SQL join now happens through secure functions or on tokens, and data teams routinely discover this after the engineering team has committed.
  • Unwinding the vault later is a rewrite rather than a migration because tokens are threaded through every service, so the switching cost climbs steadily and the negotiating position at renewal weakens with each release.
  • Scope reduction is an architectural claim your own assessor must accept, so the audit saving is real only if the implementation genuinely keeps sensitive values off your systems, and partial implementations that leave a cache or a log line in place deliver the cost without the benefit.

Pricing, plan by plan

Highnote

On request
  • Highnote platform$undefined/year
    • Quoted per programme with no public rate card
    • Requires a sponsor bank relationship for card issuing
    • Interchange sharing terms negotiated per programme

Skyflow

On request
  • Skyflow Data Privacy Vault$undefined/year
    • Platform fee plus usage by data subject count
    • Priced additionally per data residency region
    • PCI Level 1, SOC 2 Type 2, ISO 27001 and HIPAA coverage

Which should you pick?

Choose Highnote if

  • You need card issuing.
  • You work on Web, API.
  • You also want merchant acquiring.
Highnote review

Choose Skyflow if

  • You need tokenised storage.
  • You work on API, Web, Self-hosted.
  • You also want polymorphic encryption.
Skyflow review

Questions people ask

Is Highnote or Skyflow better?
Neither clearly leads. Highnote starts at On request and Skyflow at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Highnote or Skyflow?
Highnote starts at On request and Skyflow at On request.
Does Highnote or Skyflow run on more platforms?
Highnote runs on Web, API. Skyflow runs on API, Web, Self-hosted.
What is Highnote best used for?
Highnote is most often used for a marketplace that both pays out to sellers and issues them spend cards, wanting one settlement ledger, a vertical software company embedding card acceptance and card issuing for the same customer base, a fintech launching a commercial charge card programme with custom authorisation logic, a platform replacing separate issuing and acquiring vendors to remove cross system reconciliation. Of those, a marketplace that both pays out to sellers and issues them spend cards, wanting one settlement ledger and a vertical software company embedding card acceptance and card issuing for the same customer base are not what Skyflow is typically brought in for.
What can Highnote do that Skyflow cannot?
Highnote covers Card issuing, Merchant acquiring, Unified ledger, Spend controls. Skyflow covers Tokenised storage, Polymorphic encryption, Field level access policies, Data residency.

Answered from the vendors’ own pages

Highnote: Do I need a sponsor bank?

Yes for card issuing in the United States. Highnote is a processor and programme platform, not a bank, and the sponsor bank sets approval and compliance terms.

Skyflow: Does Skyflow really take my systems out of PCI scope?

It can, if card data never touches your infrastructure and the detokenisation happens at the boundary. Your QSA has to agree the design, so validate the architecture with your assessor before signing.

Highnote: How do customers make money on a card programme?

Mostly interchange sharing. Negotiate the split explicitly and model it against your actual spend mix, since regulated debit interchange is capped.

Skyflow: What does it cost?

Nothing is published. Reported annual contracts sit around 195,000 US dollars, built from a platform fee plus usage by data subject count and additional charges per data residency region.

Highnote: Can Highnote handle both accepting and issuing payments?

Yes since its 2025 acquiring launch, on the same ledger, which is its main structural differentiator.

Skyflow: How does it help with data localisation?

Records can be pinned to a specified region, so an Indian or EU residency requirement is met by the vault rather than by you running regional databases and operations teams.

Skyflow: Can I still run analytics on vaulted data?

Partly. Aggregates and comparisons are supported through polymorphic encryption and secure functions, but arbitrary joins against other datasets are harder than they were, and this is the most common late surprise.

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