Comparison

SingleForm vs SignBack

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SingleForm

Read full description

Stop filling out the same information over and over. SingleForm keeps your personal data on your device and uses AI to autofill any form instantly. How it works: 1. Save your info once — name, email, phone, address, and more 2. Scan a QR code on any SingleForm-powered form 3. Review the pre-filled form and submit in seconds KEY FEATURES Smart Fill & Voice Fill AI matches your saved data to any form field automatically. Or just speak — Voice Fill lets you fill forms hands-free. Privacy First Your data never leaves your device. No cloud storage, no tracking, no exceptions. Multiple Profiles Keep separate profiles for work, family, travel — switch with a tap. Biometric Protection Lock your data with Face ID, Touch ID, or fingerprint authentication. Scan & Go Point your camera at any SingleForm QR code. The form loads instantly with your data pre-filled. SingleForm is perfect for events, conferences, medical offices, restaurants, and anywhere you're tired of writing the same thing twice.

About

SignBack

Effortlessly sign and fill out documents on your device without printing or scanning. Create multiple identities for different roles and use the smart assistant to quickly complete forms. All processing is done locally for maximum privacy.

Highlights
  • 100% free access
  • Secure local processing
  • Multiple identities
  • Smart fast fill assistant
  • Multi-format support
  • Sign and send back in one tap
  • Scan paper documents
Features
Read full description

Stop printing. Stop scanning. Stop turning a simple signature into a whole project. SignBack turns paperwork into a clean signed PDF from your iPhone or iPad. Open a PDF, fill the blanks, sign, and send it back without a SignBack account, subscription, or watermark. Use it for contracts, leases, government forms, waivers, intake forms, vendor paperwork, and everyday PDFs. No account. No server upload for document processing. No watermark on exported PDFs. KEY FEATURES PRIVATE BY DESIGN • Your signing workflow happens on your device. Documents are not uploaded to a SignBack server for opening, filling, signing, converting, or exporting. Nothing leaves until you choose to share the finished file. OPTIONAL iCLOUD SYNC • Keep your Signature Wallet, Signing Identities, Templates, profile name, and folder structure in sync across your own devices through your private iCloud. Sync is off by default, there is no SignBack account, and everything is encrypted on-device before upload. First sync gives you merge, replace, and review options so you stay in control. SMARTER FAST FILL • Fast Fill highlights likely fields on many forms, including signature lines, printed names, dates, initials, emails, phone numbers, addresses, and checkboxes. It now adapts to document complexity with confidence guidance, helping find fields on dense forms like W-9s while avoiding instruction pages and false fill spots. TAP-TO-ADD EDITING • Tap anywhere on a document to quickly add signatures, dates, text, and checkmarks. The redesigned bottom sheet includes identity-aware Quick Fill, inline text editing, floating size controls, and a cleaner color palette so you can finish documents faster without switching screens. SCAN MULTI-PAGE DOCUMENTS • Use your camera to scan paper forms, contracts, notices, receipts, and multi-page documents. Turn pages into a clean PDF you can fill, sign, save, and send back. OPEN MORE THAN PDFs • Open PDFs, Word documents, Pages files, text files, photos, and scans. Supported files convert into clean PDFs on-device so you can finish the paperwork that actually arrives. SIGNING IDENTITIES FOR REAL ROLES • Create saved identities for personal, work, LLC manager, trustee, property manager, agent, and other signing roles. Each identity can fill the right contact details and signature block when needed, and Signing Identities can be protected with Face ID. SIGNATURE WALLET • Draw or type your signature and initials once, then reuse them across documents. Signatures render with natural pen-like ink, smooth strokes, and tapered ends. Optional device authentication can help protect your app and signature wallet. ORGANIZE YOUR PAPERWORK • Save reusable templates for forms you handle often • Organize documents into folders • Use Apartment, Rental, and custom folder categories • Keep separate signing roles and reusable details • Access SignBack from the share sheet, home-screen widget, and Siri Shortcuts SEND BACK A CLEAN PDF • When you are done, Send Back flattens your fields into the document and opens the share sheet. Large PDFs can be compressed while still letting you send the original with iCloud Mail Drop if you prefer. ON-DEVICE DOCUMENT SUMMARIES • On supported devices, SignBack can use Apple Intelligence to summarize a document and surface key points before you sign. Requires compatible hardware, supported system software, Apple Intelligence enabled, and the model available. Summaries may be incomplete and do not replace reading the original document or getting professional advice. ACCESSIBLE PAPERWORK TOOLS • SignBack includes improved VoiceOver support across sync settings, Fast Fill, the PDF editor, folder picker, and identity list. The next time someone says “just sign this and send it back,” do exactly that with SignBack. Free and private by design. Apple Intelligence, Face ID, iCloud, iCloud Drive, iPad, iPhone, and Siri Shortcuts are trademarks of Apple Inc.

Screenshots

SingleForm4 screens
SignBack4 screens

Verdict

The call

The clearest difference is iOS requirement: SingleForm at 15.1 against SignBack's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 8 level
SingleForm versus SignBack: the parameters behind the verdict, then further details
ParameterSingleFormSignBack
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequency—Every 5 days
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better18.0
Further details — not scored
Size39 MB8 MB
Age rating4+4+
DeveloperSingleForm, Inc.Silvergrove Labs LLC

In-app purchases

None

SingleForm

No in-app purchases

None

SignBack

No in-app purchases

Questions

Is SingleForm free?
SingleForm is free to download, with no in-app purchases.
Is SignBack free?
SignBack is free to download, with no in-app purchases.
Do SingleForm or SignBack have ads?
Neither SingleForm nor SignBack shows ads.

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