Comparison

Invoice.app vs Sign Documents (e

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

Head to head
About

Invoice.app

Generate invoices, estimates, and other financial documents with this easy-to-use tool. Manage clients, track payments, and customize templates for your business needs. Sync data across devices and work offline.

Highlights
  • Create invoices, estimates, and purchase orders
  • Track and export expenses
  • Customize PDF templates
  • Manage clients and document items
  • Keep track of payments
  • Work offline and sync across devices
  • Offer discounts and convert estimates to invoices
Features
Read full description

Invoice.app is a powerful yet simple invoicing solution designed with ease of use in mind. Tailored for freelancers, contractors, and small business owners, it’s the ideal tool for managing finances efficiently. Available on iOS, iPadOS, macOS, and the web with seamless syncing across devices, Invoice.app is ready to support your business, wherever you are. Main Features: - Create invoices, estimates, purchase orders, and credit memos - Export multiple documents at once for streamlined workflows - Track and export expenses - Customize PDF templates - Manage clients and document items - Keep track of payments - Work offline - Sync data across all devices - Offer discounts on items or total - Convert estimates into invoices - Calculate taxes and totals - Use search, filter, and sorting options E-Invoicing Invoice.app keeps you compliant with national e-invoicing standards: - Poland (KSeF): send and receive invoices through the National e-Invoicing System - Germany (ZUGFeRD & XRechnung): every invoice PDF embeds ZUGFeRD data (EN 16931), and public-sector clients also receive a standalone XRechnung file Plan Options Free - 3 invoices - 3 clients - Simple PDF template - Payment tracking - Multi-currency - Data export - E-invoicing - Cross-device sync Starter - All features from Free - Unlimited invoices & clients - Estimates, purchase orders & credit memos - Items - Unlimited custom tax rates - All PDF templates - Custom logo Premium - All features from Starter - Expenses - Time tracking - Multiple companies - Data import - Accountant export Terms of Service: https://invoice.app/terms Privacy Policy: https://invoice.app/privacy

About

Sign Documents (e

Digitally sign documents and images on your phone with a handwritten signature. Import files from various sources, export signed documents securely, and manage your workflow efficiently.

Highlights
  • Digitized handwritten signature creation
  • Sign PDFs and images
  • Import from cloud storage
  • Export signed documents
  • Local encryption and audit log
Features
Read full description

NanoSign lets you sign any document directly on your phone using a digitized handwritten signature. Quickly apply your personal signature to PDFs and images, import files from email or cloud storage, and export signed documents for secure sharing — all with a streamlined, professional workflow designed for speed and convenience. Core Features: 1. Create and save a digitized handwritten signature using touch or stylus input. 2. Sign PDFs and image files with precise placement and scalable signature size. 3. Import documents from email, Files, Dropbox, Google Drive, and other cloud providers. 4. Export signed documents as PDF, send via email, or save back to cloud storage. 5. Secure handling with local encryption and an audit-ready activity log for each signed file. Subscription plans: 1. Weekly subscription 2. Annual subscription Privacy Policy: https://nanosignapp.click/privacy Terms of Use: https://nanosignapp.click/terms

Screenshots

Invoice.app4 screens
Sign Documents (e4 screens

Verdict

The call

The clearest difference is rating: Sign Documents (e at 5.0 against Invoice.app's 4.2. Sign Documents (e also leads on iOS requirement (13.0 vs 18.6). Invoice.app's advantage is ratings volume (19 vs 4). On price, ads, in-app purchases and monetization model 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. Invoice.app sells 5 in-app purchases, starting at $1.99 per month and Sign Documents (e sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Sign Documents (e holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 19 and 4 respectively.

Scorecard3 real differences · 7 level
Invoice.app versus Sign Documents (e: the parameters behind the verdict, then further details
ParameterInvoice.appSign Documents (e
PriceFreeFree
Rating4.2 (19 ratings)5.0 (4 ratings) — better
Positive reviews70.4% of reviews—
Number of ratings19 — better4
Update frequencyWeekly—
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, Mac — betteriPhone, iPod
Requires iOS18.613.0 — better
Further details — not scored
Size61 MB39 MB
Age rating4+4+
DeveloperStojanowski Consulting LtdDolf Brakke

Customer experience

Invoice.app

All ratings19 ratings
Positive78.9%
Neutral0.0%
Negative21.1%
Written reviews27 reviews
Positive70.4%
Neutral7.4%
Negative22.2%

Sign Documents (e

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

5 purchases

Invoice.app

Subscriptions4
  • Starter7 Days trial$1.991 Month
  • Premium7 Days trial$4.491 Month
  • Starter7 Days trial$19.991 Year
Show 1 more
  • Premium7 Days trial$34.991 Year
One-time1
  • Premium$99.99
2 purchases

Sign Documents (e

Subscriptions2
  • Weekly Premium3 Days trial$6.997 Days
  • Annual Premium$19.991 Year

Questions

Is Invoice.app free?
Invoice.app is free to download, with in-app purchases available.
Is Sign Documents (e free?
Sign Documents (e is free to download, with in-app purchases available.
Which has better reviews, Invoice.app or Sign Documents (e?
Sign Documents (e is rated higher. Invoice.app averages 4.2 out of 5 from 19 ratings, while Sign Documents (e averages 5.0 from 4 ratings.
Do Invoice.app or Sign Documents (e have ads?
Neither Invoice.app nor Sign Documents (e shows ads.

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