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Fill is a mobile-first e-signing app popular with individual users. Here is how SignBolt compares for small-business signing in 2026.
Fill (by Wondershare) is a consumer-focused e-signing app with strong mobile UX. It appeals to individual users and very small businesses who primarily sign on their phone. For teams that need desktop-first workflows, API access, bulk send, and transparent business pricing, SignBolt is the better fit.
| Feature | SignBolt | Fill |
|---|---|---|
| Free plan | 3 docs/mo | Free tier |
| Entry paid | $8/mo | Starts $9.99/mo |
| Mobile app | Mobile web | Native iOS/Android |
| Desktop-first UX | ||
| API access | $24/mo Business | Limited |
| Bulk send | Limited | |
| Templates | 12+ built-in | Yes |
What you actually pay per year at each tier.
| Plan tier | SignBolt / year | Fill / year | You save |
|---|---|---|---|
| Free | $0 | Free tier (limited) | — |
| Entry paid | $96/yr | ~$120/yr | $24/yr |
| Team/Business | $288/yr | $240+/yr per user | Varies |
Fill pricing as publicly listed at time of writing. Verify current pricing with the vendor before purchasing.
Fill's strength is its native iOS and Android apps — well-designed for phone-first signing. SignBolt's web-based UI works on mobile browsers but is built primarily for desktop workflows. Pick the one matching your primary device.
If you send documents programmatically or in bulk, SignBolt's Business plan ($24/month) includes full API access and bulk send. Fill's comparable business features are less developed.
SignBolt offers Free ($0), Pro ($8), Business ($24), and Enterprise ($49). No confusing add-ons or per-user multipliers at the small-business tiers. Fill's pricing structure is more consumer-app-like with multiple feature gates.
Fill and SignBolt both produce legally binding signatures under ESIGN, eIDAS, and the Australian ETA. The audit-trail capture is functionally equivalent for most use cases.
The practical migration path, step by step.
Open the Fill app or web dashboard and download your signed documents before cancelling.
Create an account at signbolt.au. Free plan available immediately; upgrade to Pro or Business from the dashboard.
SignBolt accepts any PDF. Drag your existing templates into the dashboard and they are ready to sign.
If you primarily sign on mobile, SignBolt works in mobile browsers but does not have a dedicated native app. Test the mobile browser experience before fully committing.
Cancel through your Wondershare account. Annual plans end at the current term; monthly cancel immediately.
Honest note:Fill is a legitimate product. For the use cases listed above where it's the better fit, choose it. For everyone else, SignBolt covers the e-signature job cleanly at a lower price. No vendor is right for every customer — pick the one whose trade-offs match your situation.
Fill is an e-signature and PDF-filling app by Wondershare (the company behind Filmora, PDFelement, and other consumer creativity/productivity apps). It is mobile-first with strong iOS and Android apps, aimed primarily at individual users and very small businesses.
Yes. Fill produces legally binding electronic signatures under the US ESIGN Act, EU eIDAS Regulation, and Australian Electronic Transactions Act 1999 (Cth). Audit-trail capture (timestamp, IP, signer identity) meets the reliable-method standard.
Fill's paid plans start around $9.99/month for individual users, with team plans starting around $20+/month per user. SignBolt is cheaper at entry paid tier ($8 vs $9.99) and substantially cheaper for teams (flat $24 business plan vs per-user pricing).
Generally yes. SignBolt is built for small-business and freelance use cases with features like API access, bulk send, and custom branding included in the standard plans. Fill's business features are less developed and aimed more at individual power-users.
SignBolt does not have a dedicated native mobile app. The web application is mobile-responsive and works in mobile browsers. For pure mobile-first signing workflows, Fill's native apps offer a smoother experience. For desktop-first workflows with occasional mobile use, SignBolt's web experience is adequate.
Fill supports some batch-sending features but the implementation is less developed than SignBolt's bulk-send workflow. For businesses that frequently send the same document to many recipients (onboarding waves, bulk contracts), SignBolt's bulk send is the more practical tool.
Fill is easier for one-off mobile signing. SignBolt is easier for recurring desktop business workflows. Your primary device and signing cadence should drive the choice.
Legally binding e-signatures for free. No credit card required.