Comparison

Smart PDF Editor vs Zintego

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

Head to head
About

Smart PDF Editor

This app is a PDF editor designed for efficient ink annotations, especially with a stylus. It helps professionals sign and share documents, and students take notes on study materials. Organize your files with a built-in manager.

Highlights
  • Ink annotation optimized
  • Digital signature tool
  • Document review and sharing
  • Note-taking on documents
  • Built-in file manager
  • Color-coded categories
Features
Read full description

Smart PDF is a PDF editor specially optimized for ink annotations. Use it with an Apple Pencil for the ultimate ease in note taking. Great for professionals Quickly sign and send documents. Review, annotate and share files with your colleagues. Great for students If you spend a lot of time reading and studying documents on your iPad, then Smart PDF is an indispensable tool for getting the most out of your study time. Take notes on documents in class, or while studying at home. Keep all your files organized with the built-in file manager, with color-coded categories. We hope you enjoy Smart PDF! -- The App Makers @ Qrayon

About

Zintego

Create, send, and track professional invoices and estimates on your mobile device. This app helps small businesses and freelancers get paid faster with customizable templates, payment tracking, and receipt generation. Manage your billing on the go and enhance your business's professional image.

Highlights
  • Create invoices and estimates
  • Send invoices and estimates
  • Convert estimates to invoices
  • Customize invoice templates
  • Add discounts and taxes
  • Generate PDF invoices
  • Track income and payments
Features
Read full description

Zintego is a simple invoice maker that is designed for small business owners, freelancers, and contractors. Download this online invoice generator on your mobile device to create, send and track invoices. This software for billing helps you get paid faster as it allows you to manage your payments on the go. Use it today to check receipt templates and invoice examples. Create and submit a quote or a free invoice before you leave your client. This invoice generator is used to create an unlimited amount of invoices. Be a real professional in your business, use invoice creator today to send your first free invoices today! Zintego features • Create invoices & estimates for products and services offered • Send invoices & estimates to customers • Convert estimates into invoices in just a few seconds at the touch of a button • Customize the invoice template according to your needs (including invoice fields) • Add invoice terms of payment (30 days, 14 days, etc.) • Add discounts and taxes on goods and/or total amount • Adjust your company logo on invoice templates • Use built-in PDF invoice maker to create PDF invoices & estimates; • Make use of messaging apps or emails to text your invoices & estimates • Attach images to your invoices & estimates • Receive alerts when your invoices or estimates have been read • Keep track of your income due to using the built-in billing report • Configure clients from your phone contact list • Make receipts with the help of the pre-built receipt maker template 6 Reason to choose & use Zintego 1. Develop your business by making modern and customizable invoices that will add value to you as a professional and seriousness to your business. 2. Create and send invoices quickly. Use the free invoice generator and save your precious time. 3. Customize invoice format and invoice example by using the simple billing software. Stay loose. 4. Create invoices and estimates on the go. Text, email, and/or print your PDF invoices in any convenient time. 5. Increase your income easily by accepting debit & credit cards, checks & cash. 6. Keep pace with the new technologies. Use the easiest and most modern, and quick application to move your business forward. Zintego is the most modern, safest and easy-to-use app designed to create professional invoices, estimates, and quotes. Combining invoice generator, templates, PDF invoices, online payment business reporting in one software, it’s the best choice for developing your small business. P.S. If you like our app, we’ll be grateful if you rate us high. As your assistance matters much in conducting our mission to provide fast, free, and professional invoicing in the modern world to develop one’s business. Thank you for using Zintego! Feel welcome to contact us via support@zintego.com. Terms of use: https://www.zintego.com/terms Privacy policy: https://www.zintego.com/privacy

Screenshots

Smart PDF Editor4 screens

Verdict

The call

The clearest difference is review sentiment: Zintego at 100% against Smart PDF Editor's 21%. Zintego also leads on rating (4.7 vs 3.8) and update cadence (every 2 months vs every 7 months). Smart PDF Editor's advantage is in-app purchases (none vs 9). On price, ratings volume, ads 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. Zintego sells 9 in-app purchases, starting at $6.99 per month. Smart PDF Editor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Zintego holds the better App Store score, 4.7 against 3.8. Both are backed by a comparable volume of ratings — 108 and 132 respectively. Written reviews point the same way: 21% of Smart PDF Editor's written reviews are positive against 100% of Zintego's.

UpkeepUpdate frequency

Smart PDF Editor ships an update every 7 months, Zintego every 2 months. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
Smart PDF Editor versus Zintego: the parameters behind the verdict, then further details
ParameterSmart PDF EditorZintego
PriceFreeFree
Rating3.8 (108 ratings)4.7 (132 ratings) — better
Positive reviews20.9% of reviews100.0% of reviews — better
Number of ratings108132 — better
Update frequencyEvery 7 monthsEvery 2 months — better
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.0
Further details — not scored
Size11 MB36 MB
Age rating4+17+
DeveloperQrayon, LLCMonster Brain Studios Ltd

Customer experience

Smart PDF Editor

All ratings109 ratings
Positive67.9%
Neutral5.5%
Negative26.6%
Written reviews43 reviews
Positive20.9%
Neutral0.0%
Negative79.1%

Zintego

All ratings120 ratings
Positive95.0%
Neutral1.7%
Negative3.3%
Written reviews54 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Smart PDF Editor

Not enough reviews yet to summarise bugs or requests.

Zintego

Reported bugs

4 issues
  • App crashes when handling large file attachments
  • Slow invoice preview loading times
  • Payment gateway integration glitches
  • Occasional stability issues with certain operations

Requested features

13 requests
  • Inventory management and tracking system
  • Real-time inventory updates linked to invoicing
  • More in-depth customization options for invoice layouts
  • Advanced font and design styling options
  • Integration with calendar and client management tools
Show 8 more
  • Integration with retail management systems
  • More robust reporting and analytics features
  • Quick tutorial for new users
  • More font style options for personalization
  • Enhanced compatibility with accounting software
  • Time tracking features
  • More vibrant and engaging UI design
  • Advanced financial metrics and analytics

In-app purchases

None

Smart PDF Editor

No in-app purchases

9 purchases

Zintego

Subscriptions9
  • Basic Plan$6.991 Month
  • Lite Plan$6.991 Month
  • Pro Plan$12.991 Month
Show 6 more
  • Standard Plan$12.991 Month
  • Advanced Plan$19.991 Month
  • Premium Plan$19.991 Month
  • Basic Plan$69.991 Year
  • Pro Plan$129.991 Year
  • Advanced Plan$199.991 Year

Questions

Is Smart PDF Editor free?
Smart PDF Editor is free to download, with no in-app purchases.
Is Zintego free?
Zintego is free to download, with in-app purchases available.
Which has better reviews, Smart PDF Editor or Zintego?
Zintego is rated higher. Smart PDF Editor averages 3.8 out of 5 from 108 ratings, while Zintego averages 4.7 from 132 ratings.
Do Smart PDF Editor or Zintego have ads?
Both Smart PDF Editor and Zintego show ads.
Which is updated more often, Smart PDF Editor or Zintego?
Smart PDF Editor ships an update every 7 months, and Zintego every 2 months. Most recently, Smart PDF Editor was updated on October 21, 2026 and Zintego on October 24, 2026.

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