Comparison

PDF Merger vs Nudge Monster

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

Head to head
About

PDF Merger

Features
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PDF Merger 2.0 is the fastest, most private way to combine, split, compress, scan, OCR, and sign PDFs on iPhone and iPad β€” now with built-in AI Chat powered by Gemini. β€” NEW IN 2.0 β€” β€’ AI Chat (Gemini 2.5 Flash-Lite) β€” Ask any PDF anything. Summaries, lookups, totals, translations. Opt-in, with no chat history stored on our servers. 5 free questions/week. β€’ OCR (on-device) β€” Recognise text on scanned PDFs in 30+ languages. Searchable, copyable, exportable. β€’ Page Extraction β€” Pull any page into its own PDF in one tap. β€’ Page Numbering β€” Add numbers to every page with custom format & position. β€’ E-Signature β€” Stamp a saved signature image with date. β€’ Cover Page Bundler β€” Auto-generate a cover with title + table of contents. β€’ Insert Blank Page β€” Perfect for chapter breaks. β€’ 40+ Languages β€” Fully localized UI and App Store keywords. β€’ iPad Polished β€” Sidebar layout, drag-and-drop, Apple Pencil ready. β€” CORE FEATURES β€” β€’ Merge PDFs β€” Drag, drop, and reorder unlimited files into one PDF. β€’ Split PDFs β€” Extract page ranges or single pages with one tap. β€’ Compress PDFs β€” Shrink size up to 80% while preserving readability. β€’ Rotate Pages β€” Fix sideways scans, per-page or in batch. β€’ Add Watermark β€” Text or image, adjustable opacity and position. β€’ Password Lock β€” AES-128 encrypted PDFs. β€’ Document Scanner β€” Camera-to-PDF with auto-crop and perspective correction. β€’ JPG to PDF β€” Photos to PDF with auto-cropping. β€’ PDF to Images β€” Each page as JPG or PNG. β€’ Apple Intelligence β€” Smart Summary + Auto-Rename, fully on-device. β€” PRIVACY-FIRST β€” β€’ PDF processing stays 100% on your device. β€’ AI Chat is opt-in. When enabled, only the text of the PDF you're asking about is sent to Gemini, cached for 1 hour, and never stored beyond that. β€’ No tracking, no analytics, no advertising. β€’ Files live in your private app sandbox; deleted when you delete them. β€” PRO TIER (optional) β€” Unlock unlimited merges, larger batches, watermark removal, password protection, document scanner, OCR, e-signature, AI Chat, Apple Intelligence Smart Summary, and every new feature with a single subscription or one-time Lifetime purchase. β€’ Weekly β€” try Pro for less than a coffee β€’ Yearly β€” save 70% β€’ Lifetime β€” pay once, own forever Subscriptions auto-renew unless cancelled at least 24 hours before the renewal date. Payment is charged to your Apple ID. Manage in Settings β†’ Apple ID β†’ Subscriptions. β€” DESIGNED FOR iOS β€” β€’ Built natively with SwiftUI + PDFKit for iOS 17+. β€’ Optimized for iPhone, iPad, and Apple Pencil. β€’ Full Dark Mode support. β€’ Dynamic Type accessibility throughout. β€’ VoiceOver labels on every interactive control. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.freeprivacypolicy.com/live/dca821a0-9b8b-48a6-9565-d1c64344a313

About

Nudge Monster

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Most reminder apps send one notification and give up. This one escalates. Nudge Monster puts a live countdown on your Lock Screen and keeps nagging β€” through silent mode β€” until you actually do the thing. COUNTDOWNS, WITHOUT REOPENING THE APP A live countdown can appear on your Lock Screen and Dynamic Island on supported iPhonesβ€”even if you’ve swiped the app closed. ALARMS THAT CUT THROUGH SILENT MODE With alarm permission enabled, Monster mode uses system alarms that can sound through Silent mode and Focus. BIRTHDAYS YOU ACTUALLY ACT ON Bring birthdays in from your Contacts, with the date and the age. A warning the night before and a gift reminder a fortnight out help you plan ahead. When the reminder pops up, call the person or open a WhatsApp chat directly from it. Turn the nudge into a birthday wish while they are still on your mind. THE HALL OF SHAME Your on-time rate, and every deadline you let slide. Uncomfortable, and that is the point. YOUR REMINDER CONTENT STAYS PRIVATE No account. No tracking. No ads. Your reminders, birthdays and photos are stored on your device, with optional backup to your private iCloud account. Starting a countdown remotely uses a reminder service that processes device delivery tokens, random identifiers, scheduling times and technical delivery records. Your reminder text and contact details are not sent to that service. The words in your countdown are filled in on your phone. FREE, PERMANENTLY Unlimited reminders and birthdays. Standard notifications on all of them. One live countdown, Monster mode on three, export and import, and your on-time stats. NUDGE MONSTER PRO Monster mode on everything. Five countdowns at once. Automatic iCloud backup, the Home Screen widget, repeating reminders, gift reminders, and your full history. Pro is a yearly or monthly auto-renewing subscription; the price in your local currency is shown before you buy. Payment is charged to your Apple ID at confirmation. It renews automatically unless cancelled at least 24 hours before the end of the current period, and you can manage or cancel it any time in your Apple ID settings. Terms of Use: https://thenudgemonster.com/terms Privacy Policy: https://thenudgemonster.com/privacy

Screenshots

PDF Merger3 screens
Nudge Monster4 screens

Verdict

The call

The clearest difference is iOS requirement: PDF Merger at 17.0 against Nudge Monster's 26.0. On price, ads, in-app purchases 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. PDF Merger sells 3 in-app purchases, starting at $1.99 per 7 days and Nudge Monster sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference Β· 5 level
PDF Merger versus Nudge Monster: the parameters behind the verdict, then further details
ParameterPDF MergerNudge Monster
PriceFreeFree
Update frequencyEvery 9 monthsβ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad β€” betteriPhone
Requires iOS17.0 β€” better26.0
Further details β€” not scored
Size2 MB18 MB
Age rating4+4+
DeveloperAhmet Bostanckliogluvedangini sharma

In-app purchases

3 purchases

PDF Merger

Subscriptions2
  • Pro β€” Weekly3 Days trial$1.997 Days
  • Pro β€” Yearly$29.991 Year
One-time1
  • PDF Merger Lifetime$59.99
2 purchases

Nudge Monster

Subscriptions2
  • Nudge Monster Pro Monthly$3.991 Month
  • Nudge Monster Pro Yearly$19.991 Year

Questions

Is PDF Merger free?
PDF Merger is free to download, with in-app purchases available.
Is Nudge Monster free?
Nudge Monster is free to download, with in-app purchases available.
Do PDF Merger or Nudge Monster have ads?
Neither PDF Merger nor Nudge Monster shows ads.

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