Is Estuary or Knack better?

Neither clearly leads. Estuary starts at Free and Knack at $59/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Estuary or Knack?

Estuary has a free tier; the other does not. Paid plans start at Free for Estuary and $59/month for Knack.

Does Estuary or Knack run on more platforms?

Estuary runs on Cloud, Private Cloud, BYOC. Knack runs on Web.

Can I use Estuary for free?

Yes. Estuary has a free tier, so you can try it without paying. Knack starts at $59/month.

What is Estuary best used for?

Estuary is most often used for real-time data replication to data warehouses, change data capture from operational databases, feeding analytics and bi systems with fresh data, powering real-time ai and ml data pipelines. Of those, real-time data replication to data warehouses and change data capture from operational databases are not what Knack is typically brought in for.

What can Estuary do that Knack cannot?

Estuary covers Real-time data delivery, Change data capture, Batch processing, Data transformation. Knack covers Visual database builder, User logins and roles, Page builder, Unlimited users.

Databases · head to head

Estuary vs Knack

Estuary

Databases

Real-time data integration combining streaming, CDC, and batch

From: Free
Rated: -

Full review Website

Knack

Databases

Hosted no-code database and web app builder priced by stored records and storage, with unlimited user accounts on every plan.

From: $59/month
Rated: -

Full review Website

The short version

Only Estuary has a free tier, so it costs nothing to try first.
Each has a real cost: Estuary per-GB pricing adds up quickly for high-volume scenarios; Knack plans are capped by stored records, so an application that logs events or keeps history rather than current state climbs tiers on data volume alone, and archiving old records becomes a permanent maintenance chore rather than a one-off.
They diverge on capability: Estuary covers Real-time data delivery, Knack covers Visual database builder.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Estuary and Knack actually diverge.

Attributes where Estuary and Knack differ
Attribute	Estuary	Knack
Starting price	Free	$59/month
Pricing model	Usage-based per GB plus per-connector cost	subscription
Free tier	Yes	No
Platforms	Cloud, Private Cloud, BYOC	Web
Founded	2019	Unknown

Identical on both: user rating (Not yet rated), category (Databases).

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 Estuary

Real-time data delivery
Change data capture
Batch processing
Data transformation
Pre-built connectors
Multiple deployments
RBAC and monitoring

Only in Knack

Visual database builder
User logins and roles
Page builder
Unlimited users
E-commerce
Automation flows
Scheduled tasks
REST API and webhooks

What people use each for

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

Estuary

Real-time data replication to data warehousesnot Knack
Change data capture from operational databasesnot Knack
Feeding analytics and BI systems with fresh datanot Knack
Powering real-time AI and ML data pipelinesnot Knack

Knack

A member or client portal where thousands of external people need their own login and see only their own recordsnot Estuary
Replacing a shared spreadsheet used by a team that has outgrown it but cannot justify a developer to build a bespoke internal toolnot Estuary
Inventory, asset or case tracking for a small operations team that needs roles, forms and a record of who changed whatnot Estuary
A registration or booking application for an association, school or non-profit where the user count is large and the record count stays modestnot Estuary

Where each one falls short

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

Estuary

Per-GB pricing adds up quickly for high-volume scenarios
No transparent per-connector volume discounts below 6 connectors
Limited to data movement; transformation capabilities are basic
BYOC and private deployment requires enterprise plan
Smaller ecosystem compared to established alternatives

Knack

Plans are capped by stored records, so an application that logs events or keeps history rather than current state climbs tiers on data volume alone, and archiving old records becomes a permanent maintenance chore rather than a one-off.
API access is capped per day, at 1,000 calls on the entry plan and 10,000 at the Corporate tier, so a scheduled sync or a busy automation can exhaust the day's quota before the working day ends and integrations then fail silently.
The application itself cannot be exported or self-hosted; records can be downloaded but the pages, roles, flows and business logic exist only inside Knack, so outgrowing the platform means rebuilding the app rather than moving it.
Customisation beyond the builder is limited to injected CSS and JavaScript that Knack's support does not cover, so any non-standard interface behaviour becomes yours to maintain against a DOM the vendor can change without warning.
Compliance capabilities that regulated buyers assume are baseline, HIPAA and GovCloud options, advanced SSO, IP restrictions and private environments, are gated to the Corporate and Enterprise tiers, so a small regulated pilot cannot legitimately start on an entry plan.

Pricing, plan by plan

Estuary

Free

DeveloperFree
- 10 GB per month
- 2 connector instances maximum
- No credit card required
Cloud$0.5/GB
- $0.50 per GB of data moved
- $100 per connector monthly (6+ connectors $50 each)
- 200+ connectors
Enterprise$null/custom
- Volume-based discounts
- SOC 2 and HIPAA compliance
- SSO authentication

Knack

$59/month

Starter$59/month
- 20,000 database records
- Unlimited users, tables, fields
- 25 AI credits
Pro$130/month
- 50,000 database records
- Remove Knack branding
- E-commerce payments
Corporate$300/month
- 125,000-2.5M database records
- App restore functionality
- Advanced SSO
Enterprise$null/month
- Dedicated account manager
- HIPAA/GovCloud-based options
- Custom pricing

Which should you pick?

Choose Estuary if

You need real-time data delivery.
You want to start without paying.
You work on Cloud, Private Cloud, BYOC.
You also want change data capture.

Estuary review

Choose Knack if

You need visual database builder.
You also want user logins and roles.

Knack review

Questions people ask

Is Estuary or Knack better?: Neither clearly leads. Estuary starts at Free and Knack at $59/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Estuary or Knack?: Estuary has a free tier; the other does not. Paid plans start at Free for Estuary and $59/month for Knack.
Does Estuary or Knack run on more platforms?: Estuary runs on Cloud, Private Cloud, BYOC. Knack runs on Web.
Can I use Estuary for free?: Yes. Estuary has a free tier, so you can try it without paying. Knack starts at $59/month.
What is Estuary best used for?: Estuary is most often used for real-time data replication to data warehouses, change data capture from operational databases, feeding analytics and bi systems with fresh data, powering real-time ai and ml data pipelines. Of those, real-time data replication to data warehouses and change data capture from operational databases are not what Knack is typically brought in for.
What can Estuary do that Knack cannot?: Estuary covers Real-time data delivery, Change data capture, Batch processing, Data transformation. Knack covers Visual database builder, User logins and roles, Page builder, Unlimited users.

Answered from the vendors’ own pages

Estuary: What is included in the free Developer plan?

Developer plan ($0/month) includes 10 GB of data per month and up to 2 connector instances, no credit card required.

Source

Knack: Is Knack charged per user?

No. User accounts are unlimited on all plans. Plans are bounded by stored record count, file storage, API calls per day and automation transactions.

Estuary: How is data pricing calculated on Cloud plan?

Cloud plan charges $0.50 per GB of data moved plus $100/month per connector for the first 6 connectors, then $50/month for additional connectors.

Source

Knack: What happens when I exceed the record limit?

You move to a higher tier or reduce stored records. Because the limit is on data rather than people, apps that accumulate history hit it while apps that track a fixed set of entities generally do not.

Estuary: What discount is available when adding 6+ connectors?

When using 6 or more connectors, the per-connector cost drops to $50/month from $100/month, saving $50 per additional connector.

Source

Knack: Can I export my application or self-host it?

You can export record data. The application itself, its pages, roles, permissions and flows, is not exportable and cannot be self-hosted, so leaving means rebuilding elsewhere.

Knack: Is it suitable for public-facing portals?

That is its strongest case, because logins are unlimited and role-based permissions are built in. The constraint is record volume and API throughput, not audience size.

Knack: Can I use it for regulated data?

HIPAA-aligned and government cloud options exist but only on the Enterprise tier, along with private server environments. Lower tiers should not be used for regulated workloads.

Estuary vs Knack

Estuary

Knack

The short version

Where they differ

What each one covers

Only in Estuary

Only in Knack

What people use each for

Estuary

Knack

Where each one falls short

Estuary

Knack

Pricing, plan by plan

Estuary

Knack

Which should you pick?

Choose Estuary if

Choose Knack if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Estuary

More on Knack

Keep looking

Other head to heads