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APIs · head to head

PubNub vs Tribe Payments

PubNub logo

PubNub

APIs

Realtime communication platform for chat, IoT, and live data apps

From
Free
Rated
-
Full reviewWebsite
Tribe Payments logo

Tribe Payments

APIs

Combined issuer and acquirer processing platform for fintechs, banks and acquirers

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only PubNub has a free tier, so it costs nothing to try first.
  • Each has a real cost: PubNub free plan storage history is limited to 7 days, which is short for apps needing longer message retention.; Tribe Payments running both issuing and acquiring through one vendor concentrates operational risk, since a platform fault affects both sides of a client's card business at once rather than just one.
  • They diverge on capability: PubNub covers Pub/sub messaging, Tribe Payments covers ISAAC core platform.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which PubNub and Tribe Payments actually diverge.

Attributes where PubNub and Tribe Payments differ
AttributePubNubTribe Payments
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
Platformsweb, ios, android, apiWeb, API

Identical on both: 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 PubNub

  • Pub/sub messaging
  • Presence tracking
  • Message persistence
  • Serverless Functions
  • File sharing
  • Encryption and access controls

Only in Tribe Payments

  • ISAAC core platform
  • Issuer processing
  • Acquirer processing
  • Multi-scheme connectivity
  • Open banking module
  • 3D Secure and fraud tooling

What people use each for

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

PubNub

  • Building realtime chat applicationsnot Tribe Payments
  • Streaming live IoT sensor datanot Tribe Payments
  • Adding presence indicators to collaborative appsnot Tribe Payments
  • Running edge logic with serverless Functions on realtime eventsnot Tribe Payments

Tribe Payments

  • A bank or fintech wanting to run both card issuing and merchant acquiring on one processing platformnot PubNub
  • A payment facilitator consolidating separate issuing and acquiring vendor relationships into one contractnot PubNub
  • A company needing multi-scheme processing across Visa, Mastercard and regional networks like UnionPaynot PubNub
  • An Asia-Pacific expansion where Tribe's Singapore office provides regional supportnot PubNub

Where each one falls short

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

PubNub

  • Free plan storage history is limited to 7 days, which is short for apps needing longer message retention.
  • MAU-based pricing means costs scale directly with user growth, which can be less predictable than flat message-based pricing.
  • Pro-tier custom pricing above 50,000 MAU requires contacting sales rather than self-serve checkout.

Tribe Payments

  • Running both issuing and acquiring through one vendor concentrates operational risk, since a platform fault affects both sides of a client's card business at once rather than just one.
  • Pricing for either the issuing or acquiring modules is not published, so budgeting requires a sales conversation.
  • With roughly 60-plus customers, it is smaller scale than Visa or Mastercard-owned processing infrastructure, which is a factor for a client prioritising vendor size and track record.
  • Its client base and support depth are concentrated in the UK and continental Europe, and the Asia-Pacific presence via Singapore is comparatively newer and less proven.
  • As with any combined issuing and acquiring platform, a client that only needs one side still evaluates and pays for a vendor built around doing both, which may not be the most specialised option available.

Pricing, plan by plan

PubNub

Free
  • FreeFree
    • Up to 200 MAU or 1M transactions
    • 1GB data storage (7 days)
    • 5 test Serverless Functions
  • Starter$98/month
    • 1,000 MAU included
    • User management
    • Insights
  • Pro$undefined/month
    • Custom MAU packages
    • Volume discounts
    • Enterprise-scale configurations

Tribe Payments

On request
  • Tribe Payments$undefined/year
    • Pricing not published for issuing or acquiring modules
    • Custom quote required via sales

Which should you pick?

Choose PubNub if

  • You need pub/sub messaging.
  • You want to start without paying.
  • You work on web, ios, android, api.
  • You also want presence tracking.
PubNub review

Choose Tribe Payments if

  • You need isaac core platform.
  • You work on Web, API.
  • You also want issuer processing.
Tribe Payments review

Questions people ask

Is PubNub or Tribe Payments better?
Neither clearly leads. PubNub starts at Free and Tribe Payments at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, PubNub or Tribe Payments?
PubNub has a free tier; the other does not. Paid plans start at Free for PubNub and On request for Tribe Payments.
Does PubNub or Tribe Payments run on more platforms?
PubNub runs on web, ios, android, api. Tribe Payments runs on Web, API.
Can I use PubNub for free?
Yes. PubNub has a free tier, so you can try it without paying. Tribe Payments starts at On request.
What is PubNub best used for?
PubNub is most often used for building realtime chat applications, streaming live iot sensor data, adding presence indicators to collaborative apps, running edge logic with serverless functions on realtime events. Of those, building realtime chat applications and streaming live iot sensor data are not what Tribe Payments is typically brought in for.
What can PubNub do that Tribe Payments cannot?
PubNub covers Pub/sub messaging, Presence tracking, Message persistence, Serverless Functions. Tribe Payments covers ISAAC core platform, Issuer processing, Acquirer processing, Multi-scheme connectivity.

Answered from the vendors’ own pages

PubNub: What does PubNub cost?

PubNub offers a free plan for up to 200 MAU or 1 million transactions, a Starter plan at $98/month for 1,000 MAU, and custom Pro pricing for larger volumes, e.g. around $550/month for 10,000 MAU.

Source
Tribe Payments: Does Tribe do both issuing and acquiring?

Yes, its ISAAC platform supports both, built for issuing in 2019 and acquiring from 2020.

PubNub: Is there a free plan, and what are its limits?

Yes, the free plan supports up to 200 monthly active users or 1 million transactions, includes 1GB of data storage retained for 7 days, and requires no credit card.

Source
Tribe Payments: How many card schemes does it support?

Visa, Mastercard, Amex, Discover, JCB and UnionPay.

PubNub: How is usage metered?

PubNub bills primarily by Monthly Active Users, defined as a unique user who connects at least once in a billing cycle; messages are bundled into MAU pricing with no separate per-message fees, and overage is billed proportionally.

Source
Tribe Payments: Where is its customer base concentrated?

The UK and continental Europe, with a newer Singapore office serving Asia-Pacific.

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