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No-Code · head to head

OutSystems vs Whalesync

OutSystems logo

OutSystems

No-Code

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

From
On request
Rated
-
Full reviewWebsite
Whalesync logo

Whalesync

No-Code

Two-way real-time sync between no-code databases and SaaS tools

From
$40/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: 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.; Whalesync pricing counts records held in sync rather than changes made, so a large but rarely edited catalogue costs the same as a highly active one and the economics punish exactly the datasets that need the least work.
  • They diverge on capability: OutSystems covers Visual application modelling, Whalesync covers Two-way sync.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which OutSystems and Whalesync actually diverge.

Attributes where OutSystems and Whalesync differ
AttributeOutSystemsWhalesync
Starting priceOn request$40/month
Pricing modelApplication Object consumption plus internal and external user packsPer month by records in sync
PlatformsWeb, iOS, AndroidWeb

Identical on both: free tier (No), 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 OutSystems

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

Only in Whalesync

  • Two-way sync
  • Live updates
  • Field mapping
  • Unlimited mappings
  • Backfill
  • Monitoring
  • Database connectors
  • Relational field support

What people use each for

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

OutSystems

  • An enterprise replacing custom .NET or Java application development with a governed low-code platform at scalenot Whalesync
  • 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 Whalesync
  • An IT department that wants generated, inspectable code rather than a proprietary black-box runtimenot Whalesync
  • An organisation with a large existing application portfolio needing centralised governance across many apps built by different teamsnot Whalesync

Whalesync

  • A team that plans work in Notion but reports from Airtable and needs one edit to appear in both without anyone copying it acrossnot OutSystems
  • A marketing site built in Webflow whose content is authored and managed in Airtable, kept in step continuously rather than republished on a schedulenot OutSystems
  • A startup keeping a Postgres application database and an internal Airtable operations view aligned without building a sync servicenot OutSystems
  • An agency keeping a client CRM and a project tracker consistent so account managers and delivery staff work from the same recordsnot OutSystems

Where each one falls short

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

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.

Whalesync

  • Pricing counts records held in sync rather than changes made, so a large but rarely edited catalogue costs the same as a highly active one and the economics punish exactly the datasets that need the least work.
  • The gap between the 1,000 record starter tier and the million record higher tiers is very wide with no published intermediate price, so a business at ten thousand records cannot tell what it will pay without contacting the vendor.
  • Bidirectional sync has conflict semantics, and when two people edit the same field in two tools within a sync interval one edit is lost, which is silent and only discovered when someone notices their change reverted.
  • It is a small company holding a live connection in the middle of operational data, so continuity risk is real and any team relying on it should keep an export routine and know how it would rebuild the mapping.
  • It syncs records between tools but does not transform or model data, so anything requiring aggregation, deduplication or business logic between the two ends still needs a separate tool or a warehouse.

Pricing, plan by plan

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

Whalesync

$40/month
  • Starter$40/month
    • 1,000 records in sync
    • Live two-way sync
    • Unlimited mappings and row changes
  • Plus$undefined/month
    • Up to 1,000,000 records in sync
    • Live two-way sync
    • Unlimited mappings and row changes
  • Pro$undefined/month
    • Up to 1,000,000 records in sync
    • Priority support
    • Advanced field handling

Which should you pick?

Choose OutSystems if

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

Choose Whalesync if

  • You need two-way sync.
  • You also want live updates.
Whalesync review

Questions people ask

Is OutSystems or Whalesync better?
Neither clearly leads. OutSystems starts at On request and Whalesync at $40/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OutSystems or Whalesync?
OutSystems starts at On request and Whalesync at $40/month.
Does OutSystems or Whalesync run on more platforms?
OutSystems runs on Web, iOS, Android. Whalesync runs on Web.
What is OutSystems best used for?
OutSystems is most often used for an enterprise replacing custom .net or java application development with a governed low-code platform at scale, a company building customer-facing portals where the external-user pricing tier (packs of 10,000) is materially cheaper than licensing customers as internal users, an it department that wants generated, inspectable code rather than a proprietary black-box runtime, an organisation with a large existing application portfolio needing centralised governance across many apps built by different teams. Of those, an enterprise replacing custom .net or java application development with a governed low-code platform at scale and a company building customer-facing portals where the external-user pricing tier (packs of 10,000) is materially cheaper than licensing customers as internal users are not what Whalesync is typically brought in for.
What can OutSystems do that Whalesync cannot?
OutSystems covers Visual application modelling, Generated deployable code, One-click deployment, AI-assisted development. Whalesync covers Two-way sync, Live updates, Field mapping, Unlimited mappings.

Answered from the vendors’ own pages

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.

Whalesync: How is this different from Zapier?

Zapier triggers one-way actions. Whalesync maintains a persistent mapping between two copies of a record so edits flow both ways without loops or duplicates, which two zaps cannot achieve reliably.

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.

Whalesync: What counts as a record in sync?

A record becomes counted the first time it syncs, and records are not double counted across the two applications, so a thousand paired rows count once rather than twice.

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.

Whalesync: Is there a free plan?

No, only a seven day trial. Paid plans start around 40 US dollars a month for a thousand records.

Whalesync: What happens on a sync conflict?

One side wins and the other edit is discarded. Teams that expect simultaneous editing of the same fields in two tools should establish an owning system per field rather than relying on the sync to arbitrate.

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