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No-Code · head to head

Appian vs OutSystems

Appian logo

Appian

No-Code

Low-code process automation platform priced per user, per app, per month, with tier limits on data and AI volume

From
On request
Rated
-
Full reviewWebsite
OutSystems logo

OutSystems

No-Code

Enterprise low-code platform priced by application complexity units, not just users

From
On request
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Appian cost multiplies on three axes at once, users, apps and month, so deploying several apps to overlapping user populations produces a bill that is not obvious from any single per-user headline figure.; OutSystems application Objects grow with every screen, table and API an app gains, so a successful app that keeps adding features can push the account into AO overage charges that were not modelled at initial budget time.
  • They diverge on capability: Appian covers Low-code process designer, OutSystems covers Visual application modelling.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Appian and OutSystems actually diverge.

Attributes where Appian and OutSystems differ
AttributeAppianOutSystems
Pricing modelPer user, per app, per month, escalating across Standard, Advanced and Premium tiersApplication Object consumption plus internal and external user packs

Identical on both: starting price (On request), free tier (No), platforms (Web, iOS, Android), user rating (Not yet rated), category (No-Code).

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 Appian

  • Low-code process designer
  • Robotic process automation
  • AI process automation
  • Data fabric
  • Portals
  • Process mining

Only in OutSystems

  • Visual application modelling
  • Generated deployable code
  • One-click deployment
  • AI-assisted development
  • Application Object governance
  • Prebuilt integrations

What people use each for

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

Appian

  • A regulated enterprise (financial services, government, insurance) automating case management processes that need a full audit trailnot OutSystems
  • A company deploying RPA bots alongside low-code apps and wanting both in one licensed platformnot OutSystems
  • An organisation whose process data volume is large enough that the Standard tier's 4 million row cap is a real constraint worth planning fornot OutSystems
  • A business wanting embedded AI actions inside workflow steps rather than bolted on separatelynot OutSystems

OutSystems

  • An enterprise replacing custom .NET or Java application development with a governed low-code platform at scalenot Appian
  • A company building customer-facing portals where the external-user pricing tier (packs of 10,000) is materially cheaper than licensing customers as internal usersnot Appian
  • An IT department that wants generated, inspectable code rather than a proprietary black-box runtimenot Appian
  • An organisation with a large existing application portfolio needing centralised governance across many apps built by different teamsnot Appian

Where each one falls short

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

Appian

  • Cost multiplies on three axes at once, users, apps and month, so deploying several apps to overlapping user populations produces a bill that is not obvious from any single per-user headline figure.
  • Each tier has hard caps on data rows, RPA bots and monthly AI actions, so a workload can force a tier upgrade purely from data or automation volume growth, independent of user count.
  • No dollar figures are published anywhere on Appian's own site; every real price point comes from a sales negotiation, making early-stage budget comparison against OutSystems or Mendix difficult.
  • The platform's strength in process orchestration and case management is less useful for teams that mainly want simple departmental data apps, where the pricing and capability are overkill.
  • Exceeding the 200,000 (Standard) or 1,000,000 (Premium) monthly AI action allowance requires a renegotiation, so AI-heavy workflows carry real usage risk beyond the base subscription.

OutSystems

  • Application Objects grow with every screen, table and API an app gains, so a successful app that keeps adding features can push the account into AO overage charges that were not modelled at initial budget time.
  • Internal users are sold in packs of 100 and external users in packs of 10,000, so a company just over a pack boundary in either category pays for a full additional pack rather than a handful of extra seats.
  • Entry-level ODC pricing starts around 36,300 US dollars a year before any AO overage or extra user packs, which puts it out of reach for smaller teams evaluating low-code options.
  • Cloud infrastructure and hosting costs are frequently separate from the platform licence, so the all-in bill is higher than the headline subscription figure suggests.
  • Migrating a large application portfolio off OutSystems once built is difficult, since the generated code and platform-specific patterns are not designed for a clean export to standard frameworks.

Pricing, plan by plan

Appian

On request
  • Standard$undefined/month
    • Per user, per app, per month
    • 4 million data row capacity
    • 5 RPA bots included
  • Advanced$undefined/month
    • Per user, per app, per month
    • Higher data row capacity than Standard
    • More RPA bots than Standard
  • Premium$undefined/month
    • Per user, per app, per month
    • 50 million data row capacity
    • Unlimited RPA bots

OutSystems

On request
  • ODC Entry$undefined/year
    • Entry-level Application Object allowance included
    • Internal users sold in packs of 100
    • External users sold in packs of 10,000
  • ODC Enterprise$undefined/year
    • Custom AO, user pack and environment volumes
    • Negotiated multi-year enterprise agreements
    • Premium support and dedicated infrastructure options

Which should you pick?

Choose Appian if

  • You need low-code process designer.
  • You work on Web, iOS, Android.
  • You also want robotic process automation.
Appian review

Choose OutSystems if

  • You need visual application modelling.
  • You work on Web, iOS, Android.
  • You also want generated deployable code.
OutSystems review

Questions people ask

Is Appian or OutSystems better?
Neither clearly leads. Appian starts at On request and OutSystems at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Appian or OutSystems?
Appian starts at On request and OutSystems at On request.
Does Appian or OutSystems run on more platforms?
Both run on Web, iOS, Android, so platform support will not decide this one for you.
What is Appian best used for?
Appian is most often used for a regulated enterprise (financial services, government, insurance) automating case management processes that need a full audit trail, a company deploying rpa bots alongside low-code apps and wanting both in one licensed platform, an organisation whose process data volume is large enough that the standard tier's 4 million row cap is a real constraint worth planning for, a business wanting embedded ai actions inside workflow steps rather than bolted on separately. Of those, a regulated enterprise (financial services, government, insurance) automating case management processes that need a full audit trail and a company deploying rpa bots alongside low-code apps and wanting both in one licensed platform are not what OutSystems is typically brought in for.
What can Appian do that OutSystems cannot?
Appian covers Low-code process designer, Robotic process automation, AI process automation, Data fabric. OutSystems covers Visual application modelling, Generated deployable code, One-click deployment, AI-assisted development.

Answered from the vendors’ own pages

Appian: Does Appian publish its prices?

No dollar figures are public. It discloses the pricing mechanism, per user per app per month across three tiers, but actual rates are negotiated.

OutSystems: What is an Application Object?

A unit OutSystems uses to measure application complexity, counting elements such as screens, database tables and exposed APIs; more AOs mean a bigger licence requirement.

Appian: What happens if we exceed the data row cap?

Exceeding a tier's data row, RPA bot or AI action cap requires upgrading to the next tier or negotiating an add-on, regardless of user count.

OutSystems: Is there a free tier?

OutSystems has offered free or trial tiers historically for evaluation, but production use at any scale runs on paid ODC plans.

Appian: Is Appian a general app builder like OutSystems?

It can build general apps but is oriented more toward process automation and case management, with RPA and AI embedded as core features.

OutSystems: How does external user pricing work?

External users, typically customers or partners, are sold in packs of 10,000 at roughly a hundredth of the per-seat cost of internal (employee) user packs.

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