PDF Splitter + PDF Merge vs PDFOptim
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Splitter + PDF Merge
Easily combine multiple PDF files into a single document or extract specific pages from existing PDFs. This tool supports merging password-protected files if the password is known.
- Extract pages from PDF
- Merge specified pages of multiple PDFs
- Merge password-protected PDFs
- Combine PDFs into one
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PDF Merge & PDF Splitter + is a very easy-to-use app that allows you to quickly merge specified pages of multiple PDFs into one pdf. You can also use it to extract pages from pdf. Key Features: ● Extract page(s) of PDF. ● Merge specified pages of multiple PDFs into one PDF. ● Merge password-protected PDF, but you must know the password. ● The name is also PDF Merge & PDF Splitter + on the MacOS platform, more powerful and easier to use. ● Contact us If you have any questions, please feel free to contact us by email. Email address : tzq17888@163.com.
PDFOptim
Easily compress and optimize PDF files on your iPhone and iPad. Reduce the size of large documents, saving storage space and transmission time. Offers both automatic and manual compression modes with advanced settings for image and vector graphics.
- Compress PDF documents
- Optimize PDF files
- Automatic compression mode
- Manual compression mode
- Adjust image resolution and quality
- Optimize vector graphics
- Support for password-protected PDFs
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PDFOptim is a simple and intuitive way to compress, optimize and reduce PDF documents on iPhones and iPads. PDFOptim provides easy and effective ways to compress large image and graphics heavy PDF files. Inbuilt side-by-side preview to compare original and compressed PDF. * * * PDFOptim for Mac is also available on the Mac App Store. * * * Compressed PDF documents requires less disk space for storage and faster uploads and downloads saves transmission time and cost. PDFOptim rewrites the entire PDF documents using selected compression options as efficiently as possible without compromising the document's integrity. If your PDF documents are in another app (For Example Mail, DropBox or SkyDrive etc.) that uses the Open In… button, tap the button to open the PDF document in PDFOptim. You can also transfer PDF documents from your desktop computer via iTunes into PDFOptim application on your iPhone or iPad. KEY FEATURES: AUTO COMPRESSION MODE - PDFOptim analyze document’s contents and apply algorithm to generate a smallest possible PDF by maintaining the document’s visual quality. Choose one of the four predefined Auto compression methods and let the app do the hard work for you. No further user interaction required to provide technical compression options. MANUAL COMPRESSION MODE - Change compression options manually to generate optimum sized PDF of your need. You can choose compression options to set from Image Color Model, Image Resolution, JPEG Image Quality, Optimise vector graphics level and Advance option. - Image color model to choose from RGB, Gray and Mono. Selecting Monochrome color model option converts raster PDF contents into black and white which helps reduces PDF file size to greater extent. It is very helpful when compressing scanned books mainly containing text. - Image resolution ppi (pixels/inch) control to resize raster image contents. Downsampling at lower resolution decrease the file size dramatically. - Quality control. Set quality from lossless to least for resampling all raster images into PDF. It allows you to control compressed PDF size and viewing quality. -Advance options to remove PDF content properties like alternate images, page thumbnails, documents structure hierarchy and output intent. - Optimize vector graphics option removes superfluous information to reduce vector graphics heavy PDF. Increase in optimize vector from 'Level 1' to 'Level 5' reduces output PDF file size less to more respectively. This option is very useful when PDF content mainly consist of high precision vector graphics, Usually PDF drawing, note-taking and PDF markup apps creates large vector graphics heavy PDF files which can be compressed by this option efficiently. - Password protected PDF documents supported for compression using correct password. - Single or multiple compressed PDFs can be shared as single ZIP (*.zip) file. - Allows Compressed PDFs to Open In… another application, Mail, Message, Print, share PDFs to nearby iOS devices via AirDrop. - Use Copy to iTunes to save and share compressed PDFs on your desktop computer. PDF VIEWER: - Inbuilt PDF viewer with fully selectable and searchable text contents. Select and copy text to clipboard for further use. - Pinch out and Pinch in to ZoomIn and ZoomOut view and search feature to find a character, word and sentence. - Scroll through your document by thumbnail view or Go to page feature. Note: PDFOptim is standalone application running natively to compress PDF documents securely on your iOS device. You can refer User Manual for any assistance Or Contact Support. *The free version has limitation to export one compressed PDF per week. Get Premium to remove all restrictions and start exporting an unlimited number of compressed PDFs. Privacy Policy: http://rootrisetech.com/pdfoptim-privacy-policy Terms of Use(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: PDFOptim at 4.7 against PDF Splitter + PDF Merge's 4.5. PDF Splitter + PDF Merge's advantage is review sentiment (88% vs 76%) and update cadence (every 3 months vs every 5 months). On price, ratings volume, ads and in-app purchases 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
Both are free to download. PDF Splitter + PDF Merge sells 2 one-off in-app purchases and PDFOptim sells 3 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.
PDFOptim holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 139 and 292 respectively. Written reviews complicate that: 88% of PDF Splitter + PDF Merge's written reviews are positive against 76% of PDFOptim's, so the app with the better star average is not the one people write more warmly about.
PDF Splitter + PDF Merge ships an update every 3 months, PDFOptim every 5 months. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.
| Parameter | PDF Splitter + PDF Merge | PDFOptim |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (139 ratings) | 4.7 (292 ratings) — better |
| Positive reviews | 88.2% of reviews — better | 75.6% of reviews |
| Number of ratings | 139 | 292 — better |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 4 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | 青青 余 | RootRise Technologies Pvt. Ltd. |
Customer experience
PDF Splitter + PDF Merge
PDFOptim
User reviews
PDF Splitter + PDF Merge
From 139 App Store ratingsWhat we love
- 🚀 Easy to use
- 🚀 Quick and efficient
- 🚀 Intuitive interface
- 👍 Reliable and consistent
- 👍 Excellent value for free app
Room to improve
- 🐛 Issues with sorting/reordering files
- 🐛 Limitations on number of files
- 🔧 Outdated or basic interface design
- 💰 Requests payment after trial period
PDFOptim
From 292 App Store ratingsWhat we love
- 👍 Excellent compression quality
- 🚀 Efficient and fast performance
- 👍 Simple and easy to use
- 💰 Good value for money (one-time purchase)
- 👍 No annoying subscriptions
Room to improve
- 🐛 App not launching/freezing
- 🐛 Doesn't work for certain file types (e.g., GoodNotes)
- 🐛 Poor image quality/pixelation
- 🐛 Compression not effective on all PDFs
- 🐛 Confusing or illogical interface
Bugs and requests
PDF Splitter + PDF Merge
Reported bugs
2 issues- Corrupts text in merged PDF documents
- Paid version does not work as expected
Requested features
4 requests- Add page preview functionality
- Allow merging of other file types (not just PDFs)
- Improve file sorting/reordering capabilities
- Provide more customization options
PDFOptim
Reported bugs
11 issues- App not launching on iOS 18.0.1
- App freezes during launch
- App won't take purchases
- Cannot optimize certain PDFs
- Compression not effective on marked-up PDFs
Show 6 moreShow fewer
- App no longer works after updates
- File compressed to a slightly smaller size with no significant reduction
- Graphics become unreadable or highly degraded
- App crashes
- Multitasking, drag and drop not working
- Doesn't use full screen on new iPads
Requested features
6 requests- Support for iOS shortcuts
- macOS version integration/cross-platform compatibility
- Improved handling of specific file types like GoodNotes
- Better optimization for handwritten notes within PDFs
- Cloud storage for compressed documents (iCloud)
Show 1 moreShow fewer
- Update for latest OS versions and multitasking features
In-app purchases
PDF Splitter + PDF Merge
- Unlock(without restriction)$3.99
- Unlock iOS without restriction$3.99
PDFOptim
- Premium : Monthly Access$0.991 Month
- Premium : Yearly Access3 Days trial$2.991 Year
- Premium : Lifetime Access$4.99
Questions
Is PDF Splitter + PDF Merge free?
Is PDFOptim free?
Which has better reviews, PDF Splitter + PDF Merge or PDFOptim?
Do PDF Splitter + PDF Merge or PDFOptim have ads?
Which is updated more often, PDF Splitter + PDF Merge or PDFOptim?
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