Surveys · head to head
Fillout vs Whalesync
Fillout
Surveys
Form builder that reads and writes records in Airtable, Notion, HubSpot and Salesforce, with unlimited seats on every plan including the free one
- From
- Free
- Free plan
- Yes
Whalesync
No-Code
Two-way real-time sync between no-code databases and SaaS tools
- From
- $40/month
- Free plan
- No
The short version
- Only Fillout has a free tier, so it costs nothing to try first.
- Each has a real cost: Fillout the Business plan is marketed with unlimited responses but the fair use policy names thresholds of 30,000 submissions a month, 250,000 in total, 500 forms per account and 50 GB of uploads a month, above which the vendor may limit or suspend features, so unlimited means unmetered rather than uncapped.; 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: Fillout covers Unlimited seats and forms, Whalesync covers Two-way sync.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Fillout and Whalesync actually diverge.
Identical on both: user rating (Not yet rated).
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 Fillout
- Unlimited seats and forms
- Database read and write
- Soft response limits
- Conditional logic and calculations
- EU hosting
- REST API and webhooks
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.
Fillout
- A team already running on Airtable or Notion that wants forms which update existing records rather than appending new rowsnot Whalesync
- An organisation with many occasional form builders, where per-seat pricing elsewhere would cost more than the forms are worthnot Whalesync
- Replacing a survey tool, a scheduling tool and a payment link with one form that does all threenot Whalesync
- Public forms that must keep collecting through an unexpected traffic spike rather than shutting off at a quotanot 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 Fillout
- A marketing site built in Webflow whose content is authored and managed in Airtable, kept in step continuously rather than republished on a schedulenot Fillout
- A startup keeping a Postgres application database and an internal Airtable operations view aligned without building a sync servicenot Fillout
- An agency keeping a client CRM and a project tracker consistent so account managers and delivery staff work from the same recordsnot Fillout
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Fillout
- The Business plan is marketed with unlimited responses but the fair use policy names thresholds of 30,000 submissions a month, 250,000 in total, 500 forms per account and 50 GB of uploads a month, above which the vendor may limit or suspend features, so unlimited means unmetered rather than uncapped.
- EU data residency begins on the Team plan at 250 USD per month, more than three times the Business price, and is not applied automatically; you must upgrade and then raise a support request to be moved.
- The Team plan is hidden behind a secondary tab that does not render without interaction, so buyers reading the pricing page see Business at 75 USD as the top self-serve tier and only discover the 250 USD step when they ask for single sign-on or EU hosting.
- The enterprise marketing page lists hosting in the United States, EU, United Kingdom, Australia and Canada, but the security documentation and subprocessor list name only the United States and the EU, so three of those five regions should be confirmed in writing before they are relied on.
- The vendor is SOC 2 Type 2 but claims neither ISO 27001 nor HIPAA anywhere in its documentation, and it is angel-funded with no disclosed institutional round while the parent company now trades as Zite and ships a separate AI application builder.
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
Fillout
Free- FreeFree
- 1,000 responses per month
- Unlimited forms and unlimited seats
- 20 MB per file upload
- Starter$15/month
- 180 USD per year billed annually, a stated 20 percent saving on monthly billing
- 2,000 responses per month
- Unlimited forms and seats
- Pro$40/month
- 480 USD per year billed annually
- 5,000 responses per month
- Branding fully removed at this tier
- Business$75/month
- 900 USD per year billed annually
- Marketed as unlimited responses, subject to a fair use threshold near 30,000 per month
- 1 GB per file upload
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 Fillout if
- You need unlimited seats and forms.
- You want to start without paying.
- You work on Web, API.
- You also want database read and write.
Questions people ask
- Is Fillout or Whalesync better?
- Neither clearly leads. Fillout starts at Free and Whalesync at $40/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Fillout or Whalesync?
- Fillout has a free tier; the other does not. Paid plans start at Free for Fillout and $40/month for Whalesync.
- Does Fillout or Whalesync run on more platforms?
- Fillout runs on Web, API. Whalesync runs on Web.
- Can I use Fillout for free?
- Yes. Fillout has a free tier, so you can try it without paying. Whalesync starts at $40/month.
- What is Fillout best used for?
- Fillout is most often used for a team already running on airtable or notion that wants forms which update existing records rather than appending new rows, an organisation with many occasional form builders, where per-seat pricing elsewhere would cost more than the forms are worth, replacing a survey tool, a scheduling tool and a payment link with one form that does all three, public forms that must keep collecting through an unexpected traffic spike rather than shutting off at a quota. Of those, a team already running on airtable or notion that wants forms which update existing records rather than appending new rows and an organisation with many occasional form builders, where per-seat pricing elsewhere would cost more than the forms are worth are not what Whalesync is typically brought in for.
- What can Fillout do that Whalesync cannot?
- Fillout covers Unlimited seats and forms, Database read and write, Soft response limits, Conditional logic and calculations. Whalesync covers Two-way sync, Live updates, Field mapping, Unlimited mappings.
Answered from the vendors’ own pages
Fillout: Are seats really unlimited?
Yes. The vendor states there are no per-seat charges on any plan, including Free, and forms are unlimited too. Responses per month is the only meter below the Business tier.
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.
Fillout: What happens when I exceed my response quota?
Nothing breaks. Forms keep collecting, and you can upgrade, buy bulk submissions or wait for the monthly reset.
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.
Fillout: Can I host respondent data in the EU?
Only from the Team plan at 250 USD per month, and only after contacting support to switch. Note that email and payment subprocessors remain in the United States regardless.
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.
Fillout: Is the Business plan really unlimited responses?
It is unmetered, not uncapped. The fair use policy names roughly 30,000 submissions a month as the point at which the vendor may intervene, so treat that as the practical ceiling.
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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