Compress PDF vs ScanChat PDF
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Compress PDF
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That PDF is too big to email or upload? Compress PDF shrinks it down in seconds ā right on your iPhone, so your documents never leave your device. No ads. No daily limits. No subscription. Pay once. ⢠REAL SIZE REDUCTION ā re-compresses the pages so scanned and image-heavy PDFs get dramatically smaller. ⢠THREE LEVELS ā Light, Recommended, or Maximum, so you control quality vs size. ⢠NEVER BIGGER ā if a PDF is already optimized, we keep your original instead of inflating it. ⢠100% PRIVATE ā everything happens on your iPhone. Your documents are never uploaded. ⢠NO ADS, NO SUBSCRIPTION ā pay once. No "2 free per day" trap, no watermark. Pick a PDF, choose a level, share or save. Done. Best for scanned documents, contracts, and image-heavy PDFs that won't fit an upload limit.
ScanChat PDF
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ScanChat PDF is a scanner, PDF editor and on-device AI reader. Scan a page, open a file, ask a question, sign it, or stamp a watermark ā without creating an account. SCAN & SEARCH ⢠Scan documents with the camera and turn pages into searchable PDFs ⢠Import PDFs from Files, or build a PDF from photos ⢠Search file names and text inside your library ⢠OCR runs on this device when a page has little text CHAT WITH ANY PDF ⢠Ask a question and jump to the page ⢠Summarize, extract names, dates, amounts and invoice fields ⢠Conversations stay with the document ⢠No cloud login for chat or search EDIT & MARKUP ⢠Highlight, pen, text, eraser and shapes ⢠Draw on any page, then share or export ⢠Ask the PDF while you read PDF TOOLS ON THIS DEVICE ⢠Merge two or more PDFs ⢠Split a page range into a new file ⢠Compress with a clear quality percent ⢠Rotate pages one by one ⢠Edit pages: reorder, delete, move ⢠Image to PDF and PDF to image ⢠Draw a signature, drag it into place, save ⢠Watermark: large diagonal text, pick font and size PRIVATE BY DESIGN ⢠Documents, OCR text, notes and chat stay on this iPhone or iPad ⢠Camera is used only when you scan ⢠Photos are used only when you import or export images ⢠Ads may appear in the free version. Go Premium to remove them. Your documents stay on this device. Made for work, study and everyday paperwork ā invoices, IDs, notes, contracts and scans ā in one simple library. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
Compress PDF and ScanChat PDF are too close to call on the numbers: across 6 compared parameters ā price, update cadence, ads and in-app purchases among them ā neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Compress PDF sells 1 one-off in-app purchase and ScanChat PDF sells 2 in-app purchases, starting at $8.99 per month. Whichever you choose, the download price is not the number that matters.
Compress PDF ships an update weekly, ScanChat PDF every 9 days. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.
| Parameter | Compress PDF | ScanChat PDF |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly ā better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad ā better |
| Requires iOS | 16.0 | 16.0 |
| Further details ā not scored | ||
| Size | 1 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Jhomar Maravillas | Chirag Gohil |
In-app purchases
Compress PDF
- Unlock Unlimited$4.99
ScanChat PDF
- ScanChatPDF Monthly Subscription$8.991 Month
- ScanChatPDF Yearly Subscription$24.991 Year
Questions
Is Compress PDF free?
Is ScanChat PDF free?
Do Compress PDF or ScanChat PDF have ads?
Which is updated more often, Compress PDF or ScanChat PDF?
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