OOReader vs Universal Converter Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OOReader
View office documents from various suites, including OpenOffice, LibreOffice, and Microsoft Office formats, as well as PDFs. Convert documents to PDF for easy sharing and printing, with an internet connection required for conversion.
- View ODF, DOCX, XLSX, PPTX, PDF
- Convert documents to PDF
- Share and print documents
- Page-by-page viewing
- Search within documents
- Password protected document viewing (PRO)
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OOReader is the essential mobile viewer for all your office documents. Easily open and view files created with OpenOffice and LibreOffice (Writer, Calc, Impress), common Microsoft Office formats (Word, PowerPoint, Excel), PDFs, and many other documents. Instantly access all your critical information, regardless of the file type: OpenOffice / LibreOffice (ODF Standard): • Writer: ODT, OTT, STW, SXW • Calc: ODS, OTS, STC, SXC • Impress: ODP, OTP, SDD, SDP • Draw & Math: ODG, OTG, STD, SXD, ODF, ODC, SXM, MML Microsoft Office: • Word: DOC, DOT, DOCX, DOTX, DOCM • Excel: XLS, XLT, XLSX, XLTX, XLSM • PowerPoint: PPS, PPT, POT, PPSX, PPTX, POTX • Visio: VDX, VSD, VSDX Other Formats: • PDF (Adobe Portable Document Format) • RTF (Rich Text Format, WordPad) • Legacy: WordPerfect, Lotus 1-2-3, QuattroPro, WordPro, QuarkXPress Key Features: • Quick PDF Conversion: Easily convert any supported document into a standard PDF file for reliable sharing or archival. • Sharing & Printing: Instantly share the converted PDF via email or to other apps, or print the document directly. • Optimal Viewing: Seamless page-by-page or slide-by-slide reading modes. • Essential Tools: Use the built-in search function to find specific text within long documents. • Advanced Features (PRO Upgrade): ◦ Open documents with password protection. ◦ View documents with unlimited pages (removes the 100-page limit). Important Notes: • OOReader is a document viewer only. File content cannot be edited or modified. • To perform document conversion for accurate viewing, OOReader utilizes an online service. An Internet connection is required for this conversion process.
Universal Converter Pro
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Convert your files quickly and easily with Universal Converter Pro. Work with documents, images, audio, and video from one simple app designed to make everyday file conversion straightforward. DOCUMENT TOOLS • Convert and work with popular document formats • PDF, Word, Excel, and PowerPoint support • Convert PDFs and images • Open and preview supported files directly in the app IMAGE TOOLS • Convert between popular image formats • JPG, PNG, WEBP, HEIC and more • Resize and compress images • Create PDFs from images AUDIO & VIDEO • Convert supported audio and video files • Choose the format you need • Clear handling when a format isn't supported on your device BUILT FOR PRIVACY Universal Converter Pro is designed to handle supported conversions locally whenever possible, helping keep your files under your control. SIMPLE FILE MANAGEMENT • Quickly access recent files • Preview supported documents and media • Share converted files directly from the app • Clean, easy-to-use interface PRO Upgrade to Pro for expanded access to conversion tools and limits. Monthly, annual, and lifetime options may be available depending on your region. Whether you're preparing a document, changing an image format, creating a PDF, or converting media, Universal Converter Pro puts the tools you need in one place. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sites.google.com/view/universal-convertor/home
Screenshots
Verdict
The clearest difference is update cadence: Universal Converter Pro at every 5 days against OOReader's every 2 months. On price, ads, in-app purchases 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
Both are free to download. OOReader sells 1 one-off in-app purchase and Universal Converter Pro sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
OOReader ships an update every 2 months, Universal Converter Pro every 5 days. The most recent releases landed on October 23, 2026 and October 29, 2026 respectively.
| Parameter | OOReader | Universal Converter Pro |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 53.0% of reviews | — |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.6 | 16.4 — better |
| Further details — not scored | ||
| Size | 37 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | BML Solutions Inc. | Yaseen Sweirki |
Bugs and requests
OOReader
Reported bugs
4 issues- Crashes when opening files
- Inconsistent file handling (caching issues)
- Inability to open larger documents
- Compatibility issues with newer iOS versions
Requested features
6 requests- Add search and delete functions
- Improve handling of password-protected files
- Increase file size/page limit
- Add editing capabilities
- Improve font/formatting preservation
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- Provide more cloud storage integration options
Universal Converter Pro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
OOReader
- OOReader Pro$3.99
Universal Converter Pro
- Monthly Pro$2.991 Month
- Annual Pro$14.991 Year
- Lifetime Pro$24.99
Questions
Is OOReader free?
Is Universal Converter Pro free?
Do OOReader or Universal Converter Pro have ads?
Which is updated more often, OOReader or Universal Converter Pro?
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