PDF Editor vs UnderLimit
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Editor
Easily create and manage PDF documents directly on your iPhone. Convert images to PDFs, merge multiple files, split documents, and organize pages with a simple, fast workflow. Reduce file sizes and add watermarks for secure sharing.
- Image to PDF conversion
- Merge and split PDFs
- Organize pages
- Compress PDF size
- Add watermarks
- Webpage to PDF conversion
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Make PDFs in seconds—right on your iPhone. PDF Tools helps you handle everyday PDF tasks with a clean, fast workflow and no unnecessary steps. ***Key Features*** - Image → PDF: Turn photos into a PDF (single or multi-page) - Merge PDFs: Combine multiple PDFs into one file - Split PDF: Extract pages or split into separate PDFs - Organize Pages: Reorder, rotate, and delete pages - Compress PDF: Reduce file size for sharing and storage - PDF → Images: Export PDF pages as images - Watermark PDF: Add text watermarks (center or tiled) - Web → PDF: Save a webpage as a PDF with a built-in mini browser ***Designed for speed*** - Simple tool-based workflow - Preview before exporting - Share or save to Files anytime ***Privacy*** Your documents stay on your device. (Web → PDF requires internet to load the webpage content.)
UnderLimit
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Make your files fit the limit. UnderLimit helps you reduce photos and PDFs to the file size you actually need. Choose your target size, and UnderLimit handles the compression while preserving the best quality possible. PERFECT FOR FILE SIZE LIMITS Need a photo under 1 MB? A PDF under 5 MB? An attachment small enough to upload or send? Set the target size and let UnderLimit do the work. PHOTO COMPRESSION • Compress photos to a target file size • Reduce image size in KB or MB • Keep the best quality possible • Quickly prepare images for uploads, forms, email, and sharing PDF COMPRESSION • Reduce PDF file size • Choose the maximum size you need • Prepare PDFs for upload limits and attachments • Simple, fast workflow SMART RECOMMENDATIONS Not sure which target size to choose? UnderLimit can help you select an appropriate size for your file. PRIVATE BY DESIGN Your files are processed directly on your device. Your photos and PDFs don't need to be uploaded to a remote server for compression. SIMPLE PRICING Start using UnderLimit for free. If you need more, unlock UnderLimit Unlimited with a one-time purchase. No subscription. No ads. No account required. UNDERLIMIT IS USEFUL FOR • Online forms and portals • Email attachments • Applications and document submissions • Websites with maximum upload sizes • Reducing photos before sharing • Compressing PDFs for size-restricted uploads Stop guessing compression levels. Choose the size you need and make your file fit the limit.
Screenshots
Verdict
The clearest difference is in-app purchases: PDF Editor at none against UnderLimit's 1. UnderLimit's advantage is update cadence (every 2 days vs every 2 months). On price, ads, 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
Both are free to download. UnderLimit sells 1 one-off in-app purchase. PDF Editor asks for nothing beyond the download.
PDF Editor ships an update every 2 months, UnderLimit every 2 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.
| Parameter | PDF Editor | UnderLimit |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Ha Do Thi Thu | ALESSANDRO VINCENZO DEL BALZO |
In-app purchases
PDF Editor
No in-app purchases
UnderLimit
- UnderLimit Unlimited$2.99









