Softwr

Accounting · head to head

Billin vs Medius

Billin logo

Billin

Accounting

Spanish online invoicing software for freelancers and small businesses

From
€6.6/month
Rated
-
Full reviewWebsite
Medius logo

Medius

Accounting

Accounts payable automation and supplier payments for mid-market finance teams, Marlin Equity owned

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Billin plan Basico caps usage at just 5 clients, 1 user and 10 products for EUR 6.60/month, well below what most active small businesses need; Medius the sourcing, contract and procurement modules are considerably less developed than the AP core, so buying Medius as a full source-to-pay suite means accepting weak upstream tooling.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Billin and Medius actually diverge.

Attributes where Billin and Medius differ
AttributeBillinMedius
Starting price€6.6/monthOn request
Pricing modelsubscriptionquote
PlatformsWebWeb, iOS, Android

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 Billin

Nothing recorded that Medius does not also cover.

Only in Medius

  • Invoice capture and coding
  • Matching and exception handling
  • Fraud and anomaly detection
  • Supplier payments
  • Approval workflow
  • ERP integration

What people use each for

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

Billin

  • Invoice managementnot Medius
  • Multi-user accounting for freelancers and small businessesnot Medius

Medius

  • A mid-market finance team where most spend arrives as an invoice with no purchase order to match againstnot Billin
  • A group with several legal entities on different ERPs that wants one AP process across all of themnot Billin
  • Reducing invoice fraud exposure with automated detection of supplier bank detail changesnot Billin
  • Replacing a scanning bureau and a shared AP inbox with automated capture and exception-based reviewnot Billin

Where each one falls short

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

Billin

  • Plan Basico caps usage at just 5 clients, 1 user and 10 products for EUR 6.60/month, well below what most active small businesses need
  • Plan Pro still caps clients at 50 and users at 3 for EUR 14/month, so any business with more clients must move to the unlimited EUR 23/month tier

Medius

  • The sourcing, contract and procurement modules are considerably less developed than the AP core, so buying Medius as a full source-to-pay suite means accepting weak upstream tooling.
  • Pricing is quote-only and driven by invoice volume, so a business with many low-value invoices pays disproportionately relative to the spend being controlled.
  • Payments are billed on transaction volume separately from the AP subscription, which is easy to omit from a cost comparison against a licence-only AP tool.
  • Private equity ownership since 2017 has produced an acquisition-driven product line, so payments and adjacent capability come from bought-in technology rather than the original platform.
  • ERP integration depth varies sharply by system, and organisations on less common or heavily customised ERPs face integration work that lengthens the implementation.

Pricing, plan by plan

Billin

€6.6/month
  • Plan Básico$80/year
    • 0-5 clients
    • 1 user
    • Max 10 products
  • Plan Básico$96/month
  • Plan Pro$168/year
    • 6-50 clients
    • 3 users
    • Max 50 products
  • Plan Pro$204/month

Medius

On request
  • Medius AP Automation$undefined/year
    • Two packaged AP automation tiers
    • Priced by invoice volume and entity count
    • Sourcing, contracts and procurement modules sold separately

Which should you pick?

Choose Billin if

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

Billin review

Choose Medius if

  • You need invoice capture and coding.
  • You work on Web, iOS, Android.
  • You also want matching and exception handling.
Medius review

Questions people ask

Is Billin or Medius better?
Neither clearly leads. Billin starts at €6.6/month and Medius at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Billin or Medius?
Billin starts at €6.6/month and Medius at On request.
Does Billin or Medius run on more platforms?
Billin runs on Web. Medius runs on Web, iOS, Android.
What is Billin best used for?
Billin is most often used for invoice management, multi-user accounting for freelancers and small businesses. Of those, invoice management and multi-user accounting for freelancers and small businesses are not what Medius is typically brought in for.
What can Billin do that Medius cannot?
Medius covers Invoice capture and coding, Matching and exception handling, Fraud and anomaly detection, Supplier payments.

Answered from the vendors’ own pages

Billin: What are Billin's plan costs?

Billin offers three plans: Básico at €80/year (€6.60/month), Pro at €168/year (€14/month), and Ilimitado at €276/year (€23/month). Annual billing includes 18% savings compared to monthly.

Source
Medius: Is Medius a procurement suite or an AP tool?

Primarily an AP automation platform with procurement modules attached. If sourcing is your main requirement, look elsewhere.

Billin: Is there a free trial for Billin?

Yes, Billin offers a 30-day free trial with all features included. No credit card is required to start.

Source
Medius: Who owns Medius?

Marlin Equity Partners, which acquired it in 2017 and has funded several bolt-on acquisitions since.

Billin: How many users does each Billin plan include?

Básico includes 1 user, Pro includes 3 users, and Ilimitado includes unlimited users.

Source
Medius: How is it priced?

By quote, driven by invoice volume and entity count, with payments billed separately on transaction volume.

Medius: Does it replace our ERP?

No. It sits alongside the ERP and posts approved invoices into it.

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