Comparison

Sorto vs PDFKit

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

Head to head
About

Sorto

Features
Read full description

Sorto is a private, intelligent email app for iPhone and iPad. Connect Gmail, iCloud Mail, or another compatible IMAP account to read, organize, search, compose, and replyβ€”while Sorto helps identify messages that may need your attention. A FAMILIAR INBOX, MADE SMARTER Keep the email workflow you already understand. Sorto adds quiet intelligence without turning your inbox into a complicated dashboard. β€’ Unified inbox with built-in search β€’ Multiple accounts and account-specific mailboxes β€’ Read and unread state, selection, and bulk actions β€’ Compose new messages and reply from the account that received the email β€’ Sent mail and local Sorto Archive UNDERSTAND EMAIL FASTER Sorto places useful context directly where you need it: β€’ A concise Sorto Brief above the original email β€’ Action items extracted from supported messages β€’ Clear category indicators for Needs Attention, Opportunities, Updates, People, Snoozed, and Noise β€’ Visible signals when a conversation may need a reply β€’ Classification corrections that improve future results FOCUS ON WHAT NEEDS ATTENTION Focus creates a guided session from messages that may deserve action. Review the brief and original email, then reply, snooze, archive, mark done, correct the category, or skip for now. PRIVACY IS PART OF THE ARCHITECTURE Classification and supported AI assistance run on your device. Email content is not sent to 3Nsofts servers or third-party AI providers. β€’ Credentials are protected in the device keychain β€’ Replies are sent only after your explicit approval β€’ The original email remains available β€’ No cloud AI service is required for classification SUPPORTED ACCOUNTS β€’ Gmail using a Google App Password β€’ iCloud Mail using an Apple app-specific password β€’ Other compatible IMAP/SMTP accounts IMPORTANT DETAILS Background refresh is opportunistic and controlled by the system. Important-message notifications appear after Sorto refreshes the mailbox; they are not instant push notifications. Sorto Archive is local to Sorto and does not move or delete messages on your email provider’s server. Requires iOS 26 or iPadOS 26. Apple Intelligence features require a supported device. PRIVACY https://3nsofts.com/sorto/privacy TERMS https://3nsofts.com/sorto/terms

About

PDFKit

Features
Read full description

A complete PDF toolbox that runs entirely on your phone. No subscription, no watermarks on your files, and nothing is ever uploaded β€” every tool works offline, on-device. Pay once for Pro and it's yours. Most PDF apps make you subscribe, stamp watermarks on your exports, or send your documents to their servers. PDFKit doesn't. Your files never leave your device. FREE TOOLS β€’ Scan to PDF β€” snap a document, auto edge-detect and straighten, multi-page β€’ Merge PDFs into one, in any order β€’ Extract the pages you need β€’ Sign β€” draw your signature and place it PDFKIT PRO (one-time purchase) β€’ Edit & retype text right on the page β€’ Convert PDF β†’ Word and PDF β†’ Excel (keeps real text, not just pictures) β€’ Markup β€” freehand draw, lines, boxes, arrows and text with full color, border and fill β€’ Highlight, underline and strikethrough actual text (OCR-aware) β€’ Fill PDF forms (AcroForm fields) and flatten them β€’ Stamps β€” APPROVED, DRAFT, CONFIDENTIAL and custom, placed anywhere β€’ Redact β€” automatically finds emails, phone numbers, SSNs and card numbers and burns them out for good, all on-device β€’ Images β†’ PDF and PDF β†’ images β€’ Make scanned PDFs searchable (on-device OCR text layer) β€’ Organize pages β€” reorder, rotate, delete β€’ Split a PDF into separate files β€’ Crop, compress, add page numbers / Bates numbering β€’ Watermark β€’ Password protect and unlock β€’ Summarize a document on-device β€’ Certificate-based digital signatures WHY PDFKIT β€’ 100% on-device β€” your documents never leave your phone β€’ Pay once β€” no subscriptions, ever β€’ No watermarks on anything you export β€’ Fast, private, and works with no signal PDFKit is built for people who just want their PDF tools to work β€” quickly, privately, and without a monthly bill.

Screenshots

Sorto4 screens
PDFKit2 screens

Verdict

The call

The clearest difference is in-app purchases: Sorto at none against PDFKit's 1. PDFKit's advantage is iOS requirement (15.1 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. PDFKit sells 1 one-off in-app purchase. Sorto asks for nothing beyond the download.

UpkeepUpdate frequency

Sorto ships an update every 2 months, PDFKit every 6 weeks. Both last shipped on November 5, 2026.

Scorecard2 real differences Β· 4 level
Sorto versus PDFKit: the parameters behind the verdict, then further details
ParameterSortoPDFKit
PriceFreeFree
Update frequencyEvery 2 monthsEvery 6 weeks β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad, iPod β€” better
Requires iOS26.015.1 β€” better
Further details β€” not scored
Size11 MB90 MB
Age rating4+4+
Developerehsan azishSEDX LLC

In-app purchases

None

Sorto

No in-app purchases

1 purchases

PDFKit

One-time1
  • PDF Tools$1.99

Questions

Is Sorto free?
Sorto is free to download, with no in-app purchases.
Is PDFKit free?
PDFKit is free to download, with in-app purchases available.
Do Sorto or PDFKit have ads?
Neither Sorto nor PDFKit shows ads.
Which is updated more often, Sorto or PDFKit?
Sorto ships an update every 2 months, and PDFKit every 6 weeks. Most recently, Sorto was updated on November 5, 2026 and PDFKit on November 5, 2026.

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