Whistic is a security profile sharing network with questionnaire automation. FillBase is pure DDQ automation — built for SaaS teams that need speed over process.
TL;DR: Choose Whistic if you want to proactively share your security posture and reduce inbound questionnaires. Choose FillBase if you need to complete the DDQs that still come in — fast, accurately, and from Slack.
| FillBase | Whistic | |
|---|---|---|
| Focus | DDQ automation (100%) | Security profile network + DDQ |
| Pricing | Free – $379/mo | Custom (contact sales) |
| Setup time | 30 minutes | 1–2 weeks |
| Slack workflow | Yes — native | No |
| Trust profile | No | Yes (core feature) |
| Proactive sharing | No | Yes (Whistic Blue network) |
| Annual contract | No | Typically yes |
| Source citations | Every answer | Profile-based |
| Free tier | 200 req/mo | Free assessment sharing |
| Format support | Excel, Word, PDF, portals | Whistic profile + standard formats |
Whistic bets that if you publish your security profile publicly, buyers will stop sending custom questionnaires. That works — sometimes. But most enterprise buyers still send their own DDQ, regardless of your published profile. FillBase bets that DDQs aren't going away, so you should complete them 10x faster.
Some teams use Whistic to share their SOC 2 and standard questionnaires proactively, then use FillBase to knock out the custom DDQs that still arrive. The tools aren't mutually exclusive — they solve different parts of the same problem.
Not entirely. Whistic reduces questionnaire volume by letting buyers self-serve your security profile. But enterprise buyers with custom DDQs will still send them. You need a way to complete those quickly.
Yes. Use Whistic to proactively share your security posture and reduce inbound volume. Use FillBase to complete the custom DDQs that still come through. Many security-mature teams use both.
Whistic offers free assessment sharing (vendor side). Their paid plans for assessment management and proactive sharing require a sales conversation.
