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Accounting · head to head

IRIS KashFlow vs Metronome

IRIS KashFlow logo

IRIS KashFlow

Accounting

Online accounting software for UK sole traders and small businesses

From
£13.5/month
Rated
-
Full reviewWebsite
Metronome logo

Metronome

Accounting

Infrastructure for usage-based billing and monetization

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: IRIS KashFlow advertised monthly prices of £1.35 (Starter) and £2.75 (Business) are a 90% promotional discount off the standard £13.50 and £27.50 rates, and the promotion is described as lasting 6 months before reverting; Metronome no published pricing on homepage, requires sales contact
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which IRIS KashFlow and Metronome actually diverge.

Attributes where IRIS KashFlow and Metronome differ
AttributeIRIS KashFlowMetronome
Starting price£13.5/monthOn request
Pricing modelsubscriptionUsage-based and custom
PlatformsWebWeb, API

Identical on both: free tier (No), user rating (Not yet rated), category (Accounting).

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 IRIS KashFlow

Nothing recorded that Metronome does not also cover.

Only in Metronome

  • Real-time usage metering
  • Multiple pricing models
  • Flexible pricing implementation
  • Customer-facing dashboards
  • Revenue analytics
  • Pricing experimentation
  • Multi-dimensional pricing
  • Stripe integration

What people use each for

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

IRIS KashFlow

  • business accountingnot Metronome
  • invoicing and billingnot Metronome
  • VAT managementnot Metronome

Metronome

  • Implementing usage-based billing for SaaS productsnot IRIS KashFlow
  • Managing complex enterprise pricing modelsnot IRIS KashFlow
  • Testing pricing changes and monetization strategiesnot IRIS KashFlow
  • Real-time revenue analytics and trackingnot IRIS KashFlow
  • Integration with payment processors and accounting systemsnot IRIS KashFlow

Where each one falls short

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

IRIS KashFlow

  • Advertised monthly prices of £1.35 (Starter) and £2.75 (Business) are a 90% promotional discount off the standard £13.50 and £27.50 rates, and the promotion is described as lasting 6 months before reverting
  • Listed prices are in GBP plus VAT, and the platform's plans are built around UK VAT filing rather than other tax regimes
  • Annual pricing is quoted at RRP £162/year (Starter) and £291.50/year (Business) before the same promotional reduction

Metronome

  • No published pricing on homepage, requires sales contact
  • Limited documentation of feature comparison between plans
  • Startup plan pricing is transaction-based and may become expensive at scale
  • Enterprise customers need custom contracts with dedicated support
  • Integration ecosystem appears limited compared to some competitors

Pricing, plan by plan

IRIS KashFlow

£13.5/month
  • Starter Monthly$13.5/month
    • 10 invoices
    • up to 25 bank transactions
    • single user access
  • Business Monthly$27.5/month
    • unlimited invoices
    • unlimited bank transactions
    • multi-user access
  • Starter Annual$162/year
    • 10 invoices
    • up to 25 bank transactions
    • single user access
  • Business Annual$291.5/year
    • unlimited invoices
    • unlimited bank transactions
    • multi-user access

Metronome

On request
  • Startup$null/variable
    • Real-time usage metering
    • Multiple pricing models
    • Flexible pricing implementation
  • Custom$null/custom
    • All Startup features
    • Invoicing integrations with Salesforce, NetSuite
    • Cloud marketplace integration (AWS, Azure, GCP)

Which should you pick?

Choose IRIS KashFlow if

Nothing in the data separates IRIS KashFlow from Metronome on the points above - pick on price and on how each one feels to use.

IRIS KashFlow review

Choose Metronome if

  • You need real-time usage metering.
  • You work on Web, API.
  • You also want multiple pricing models.
Metronome review

Questions people ask

Is IRIS KashFlow or Metronome better?
Neither clearly leads. IRIS KashFlow starts at £13.5/month and Metronome at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, IRIS KashFlow or Metronome?
IRIS KashFlow starts at £13.5/month and Metronome at On request.
Does IRIS KashFlow or Metronome run on more platforms?
IRIS KashFlow runs on Web. Metronome runs on Web, API.
What is IRIS KashFlow best used for?
IRIS KashFlow is most often used for business accounting, invoicing and billing, vat management. Of those, business accounting and invoicing and billing are not what Metronome is typically brought in for.
What can IRIS KashFlow do that Metronome cannot?
Metronome covers Real-time usage metering, Multiple pricing models, Flexible pricing implementation, Customer-facing dashboards.

Answered from the vendors’ own pages

IRIS KashFlow: What are IRIS KashFlow's core features across all plans?

All IRIS KashFlow plans include unlimited quotes, online VAT submission, mobile app access, 50+ reports, bank feeds, receipt capture, multi-currency support, and payroll for up to 5 employees.

Source
Metronome: What pricing does Metronome charge for its platform?

Metronome charges based on billing volume (0.8% per transaction) and event ingestion ($0.04 per 1,000 events). Custom plans with dedicated support are available for larger deployments.

Source
IRIS KashFlow: Are there promotional discounts for new IRIS KashFlow customers?

Yes, new customers receive a 90% discount for 6 months on both Starter and Business monthly plans.

Source
Metronome: Does Metronome work with payment providers other than Stripe?

The Startup plan includes native Stripe integration. Custom plans can integrate with additional payment processors and accounting systems including Salesforce, NetSuite, and cloud marketplaces.

Source
IRIS KashFlow: Can multiple users access IRIS KashFlow on the Starter plan?

No, the Starter plan is limited to single-user access only. Multi-user access requires the Business plan.

Source
Metronome: Can I test pricing changes before deploying them to all customers?

Yes, Metronome provides continuous pricing experimentation capabilities that allow you to test and roll out pricing changes across customer cohorts safely.

Source
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