Mach Write vs docViewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mach Write
This app offers robust editing and viewing capabilities for RTF, TXT, and PDF files across iOS and macOS. It features iCloud synchronization, syntax highlighting for code formats, and PDF annotation tools.
- iCloud document synchronization
- RTF Read/Write support
- TXT and code format Read/Write with syntax highlighting
- PDF Creation, Viewing, and Editing
- Freehand PDF writing on iOS
- DOC and DOCX viewing on iOS
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**Please visit our website or search for "Mach Write" in the Mac App Store to download the macOS version, only $3.99!** Mach Write is a powerful new RTF, TXT, PDF (Rich Text Format, Plain Text, PDF) Editor and Viewer for iOS and macOS! Featuring full iCloud document synchronization, RTF in multiple styles, sizes, and colors; as well as PDF Viewing/Creating/Annotation; and TXT files in addition to supporting nearly 15 plain text code formats; Mach Write makes it super easy to create in many different formats while still being incredibly powerful! And the best part is Mach Write is free for iOS and only $3.99 (U.S.) on macOS! - iCloud document synchronization; Mach Write keeps all your documents up to date on all your iOS and OS X devices (iPhone, iPad, and Mac) - RTF Read/Write support; easily Create and Edit Rich Text with multiple styles, alignment, font sizes, color, shadows, line spacing, and more -- one of the most popular word processor formats widely compatible across OS X, Windows, and Linux - TXT Read/Write support; as well as HTML/JS/PHP/RB/PL/JAVA/C/H/M/CP/MM Read/Write with Syntax Highlighting support for HTML, Javascript, PHP, Ruby, Perl, Java, C, C++, Objective-C++ and more - PDF Creation, Viewing, Editing; PDF Free-hand writing on iOS -- Create Blank PDFs super easy and draw diagrams, take notes, etc. (Large PDF documents in iCloud, such as large eBooks, are not recommended) - DOC and DOCX Viewing on iOS (DOC/DOCX Read/Write support on OS X) - Export as PDF makes it easy to annotate PDF's for grading papers, making corrections, or signing documents (iOS only) - Revolutionary PDF Magnifer feature makes it super easy to take Notes and automatically save as PDF (iOS only) - Incredibly advanced, yet super easy to use!
docViewer
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"docViewer" is a “all in one” program to display any type of document, images, audio files and video files. With "docViewer" you can store an infinite number of documents in your portable device and you can visualize / share / print them whenever you want, also in offline mode. Compatible documents: - iWork documents (Pages, Numbers, Keynote) - Microsoft Office documents (Office ‘97 and newer) - Rich Text Format (RTF) documents - PDF files - Text files (TXT) documents - Comma-separated value (csv) files - Images - Audio files (normal playback or with HiFi) - Video files (normal play, with external televisions, with video projectors) - Zip files (view contents) Archive (Flash Drive feature): - Local archive of documents: you can save all the documents that you want in the internal memory of the device, take them with you and view them offline (no internet connection is required) Typical usage: - import documents (e.g. email attachments, pdf, doc, pages, etc...) - save them to the device's memory (internal storage - once imported, an internet connection is not required to work on the document) - view them - edit them (add freehand text, text written with the keyboard, drawings, highlight, underline, delete, color, review, correct, etc...) - search for words in the document - save the modified document to files - print - share or forward by email Rename documents: - Tap and hold your finger on the document file name for 1.5 seconds to rename the document Documents Sharing: - "ITunes File Sharing" - "Open In" - "Importing documents”: from email attachments, from Safari, from other installed applications, from Dropbox, iCloud Drive, AirDrop, etc... - "Exporting documents”: with other applications installed, Dropbox, iCloud Drive, AirDrop, etc... - "Publishing documents”: on Facebook and Twitter - "Sending documents”: with an email, iMessage, WhatsApp, etc… - Copy / Paste Document print: - AirPrint - Export to PDF file format (zoom with two fingers the print preview and share the generated PDF using the share button) Document visualization: - Viewing documents in full screen (Portrait, Landscape) - Zoom (pinching the screen with two fingers) - Pan (by dragging a finger across the screen) - Zoom IN/OUT automatically (double tap) - Horizontal swipe (quickly) to move from one document / song / video / photo to another one Vocal reading of documents: - Using Siri Dictionary: - Definition of terms highlighted in the document by using the multilingual dictionary Application Type: - UNIVERSAL APP (you pay only once and you can run on all your devices)
Screenshots
Verdict
The clearest difference is price: Mach Write at Free against docViewer's $0.99. Mach Write also leads on update cadence (every 10 months vs every 38 months). docViewer's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement 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
Mach Write is free to download; docViewer costs $0.99 up front. Mach Write sells 1 one-off in-app purchase. docViewer asks for nothing beyond the download.
Mach Write ships an update every 10 months, docViewer every 38 months. The most recent releases landed on September 10, 2026 and September 7, 2026 respectively.
| Parameter | Mach Write | docViewer |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 45.8% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 months — better | Every 38 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 14.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Mach Software Design | Gianluca Natalini |
In-app purchases
Mach Write
- Remove Ads$0.99
docViewer
No in-app purchases









