Alchemer
Alchemer is transforming insights into action with powerful customer experience management & online survey software.
Free plan
No CCAuto-renews
Easy start 2/3Open site
6 Best Formstack Alternatives in 2026
Looking for alternatives to Formstack? Below are 6 tools that do a similar job, compared on the details that decide whether you can actually use them: the size of the free allowance, whether a credit card is required, and whether the output is watermarked. Formstack itself its free tier offers 14-day free trial, and we have not confirmed the credit-card requirement.
Formstack at a glance
Formstack — AI tool
Easy start 0/3
Read the full Formstack review →Comparison
Hover over any tool name for its page. Blank cells mean we have not confirmed that detail yet.
| Tool | Free tier | Card | Watermark | From |
|---|---|---|---|---|
| Formstackthis tool | 14-day trial | — | — | Not published |
| Alchemer | Yes | Not required | — | Not published |
| forms.app | Yes | Not required | — | Not published |
| Fillout | Yes | — | — | Not published |
| BlockSurvey | 14-day trial | — | — | Not published |
| Listen Labs | — | — | — | Not published |
| Prolific | — | — | — | Not published |
Alternatives in detail
forms.app
Create online forms effortlessly with forms.app, the optimal form builder for teams
Free plan
No CCAuto-renews
Easy start 2/3Open site
Fillout
Create powerful forms, surveys and quizzes your audience will answer
Free plan
Auto-renews
Easy start 1/3Open site
BlockSurvey
For teams who treat privacy as non-negotiable
14-day free trial
Auto-renews
Details uncheckedOpen site
Listen Labs
Customer research conducted, analyzed, and summarized by AI.
Pricing hidden
Details uncheckedOpen site
Prolific
Prolific helps AI developers, researchers, and organizations easily access the highest-quality human data
Pricing hidden
Details uncheckedOpen site
Questions about these alternatives
- Is there a free alternative to Formstack?
- Yes. 3 of the 6 alternatives listed here have a confirmed free tier. Use the comparison table above to see the exact free allowance for each one.
- Which Formstack alternatives do not require a credit card?
- 2 alternatives confirm that no credit card is required to start. Check the “Card” column — entries marked “Not required” can be used without payment details.
- What is the best free Formstack alternative?
- The best free alternative depends on your workflow. The table is sorted by how easy each tool is to start (free tier, no card, no watermark). Alchemer scores 2 out of 3 and is the strongest free option we have verified.
- Can I use Formstack alternatives for commercial work?
- Some alternatives allow commercial use on their free tier. Look for the watermark and licensing details on each tool's page — we only mark commercial use when the vendor's own terms confirm it.