Comparison

SlideCrop vs Compress PDF

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

SlideCrop

Features
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Crooked slide photos, fixed instantly. Snap a photo of a projector screen or slide, and SlideCrop finds it, straightens it and cleans it up โ€” automatically, on your iPhone or iPad. โ€ข Searchable PDFs: turn a talk into one named PDF, up to 8 slides per page โ€” then search, select and copy any text on your slides โ€ข Batch: straighten a whole lecture in one go, then put it in order with one tap โ€ข Color: tinted backgrounds turn white automatically, with a Warmth slider for fine-tuning โ€ข Review: swipe through each slide beside your original photo; any that look cut off are flagged for a second look โ€ข Precise: adjust corners with a magnifier and Smart Snap โ€ข Big screens: on a sideways iPad or an open iPhone Duo, your slides sit beside a live before-and-after view โ€ข Save as new photos, or replace the originals (reversible) Private by design: your photos are processed on your device, including the text in your PDFs. No account, no ads. Try it free, including one PDF export. A one-time purchase unlocks unlimited saves and PDFs โ€” no subscription. Available in English, Chinese, Japanese, Korean, Thai, Spanish, French and German.

About

Compress PDF

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Compress PDF โ€” Shrink File Size, 100% On Your Device Is a PDF too large to email, upload, or submit? Compress PDF reduces file size in seconds, right on your iPhone or iPad โ€” without ever sending your document to a server. COMMON PROBLEMS THIS SOLVES - An application portal rejects your file for exceeding its size limit - A form, registration, or submission system caps uploads at a few MB - Your email provider blocks large attachments - A scanned document or photo-heavy PDF is taking up way too much storage - You just want a faster, lighter file to share If any of that sounds familiar, Compress PDF fixes it in a few taps. 100% OFFLINE โ€” NOTHING IS EVER UPLOADED Unlike most PDF compressor apps, which quietly send your files to a server to process them, Compress PDF works entirely on-device. Your contracts, IDs, scans, and personal documents never leave your phone. No account, no sign-up, no cloud dependency โ€” just fast, private compression, even with no internet connection. 5 COMPRESSION LEVELS โ€” PICK ONE, OR TAKE FULL CONTROL - High Quality โ€” light compression, virtually no visible quality loss - Medium โ€” balanced size reduction - Standard (Recommended) โ€” a smart default so you don't have to think about it - Low Quality โ€” maximum size reduction when you need the smallest file possible - Custom โ€” full manual control over JPEG quality, image resolution/DPI, color mode (grayscale or black & white), metadata removal, thumbnail removal, and font optimization โ€” with a live estimated size preview as you adjust Most competing apps give you a single "compress" button and hope for the best. Compress PDF gives you a real dial when you need one, so you can hit an exact size target for a strict upload portal instead of guessing. BATCH COMPRESS MULTIPLE PDFs AT ONCE Select several files and compress them together in a single batch job. A dedicated progress screen shows the true status of every file โ€” waiting, compressing, done, failed, or skipped โ€” instead of one vague spinner. When it's finished, Share All or Export All bundles every result into a single zip so you're not tapping through separate share sheets one file at a time. HANDLES PASSWORD-PROTECTED PDFs Locked PDF? The app detects it and asks for the password instead of silently failing partway through. A COMPLETE PDF WORKFLOW, NOT JUST A COMPRESSOR - Built-in viewer to preview any PDF before or after compressing โ€” vertical or book-style scrolling, pinch-to-zoom, rotate, jump-to-page, print, and share - Export or Save to any location you choose โ€” not locked into app-only storage - History tracks every compression with before/after size and % saved, searchable by name, with quick re-share, re-export, or delete BUILT FOR EVERYONE Available in 20 languages with full right-to-left support for Arabic and Urdu. Light, dark, and system themes, each fully designed. Set your default compression level once so returning visits don't require re-picking settings. WHO IT'S FOR - Students and professionals submitting documents with a strict size cap - Anyone emailing large scans, reports, or contracts - People freeing up storage without sacrificing document quality - Power users who want manual control over DPI, quality, and color โ€” not just a black-box "compress" button Compress PDF is free to use, with ads. Pro is an auto-renewable subscription (in-app purchase) that removes all ads and lifts the batch-size limit for unlimited files per batch โ€” support ongoing development and get early access to new features. Download Compress PDF and shrink your files in seconds โ€” privately, offline, and exactly the way you want. Terms of use: https://codifyappsprivacy.blogspot.com/p/terms-of-use.html

Screenshots

SlideCrop4 screens
Compress PDF4 screens

Verdict

The call

The clearest difference is ads: SlideCrop at none against Compress PDF's shown. Compress PDF's advantage is iOS requirement (15.0 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. SlideCrop sells 1 one-off in-app purchase and Compress PDF sells 3 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

SlideCrop ships an update every 2 weeks, Compress PDF every 3 weeks. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

Scorecard2 real differences ยท 4 level
SlideCrop versus Compress PDF: the parameters behind the verdict, then further details
ParameterSlideCropCompress PDF
PriceFreeFree
Update frequencyEvery 2 weeks โ€” betterEvery 3 weeks
AdsNo โ€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS17.015.0 โ€” better
Further details โ€” not scored
Size11 MB33 MB
Age rating4+4+
DeveloperSira RojanasakulMuhammad Awais Younas

In-app purchases

1 purchases

SlideCrop

One-time1
  • SlideCrop Unlimited$4.99
3 purchases

Compress PDF

Subscriptions3
  • Premium Week$2.997 Days
  • Premium Month$7.991 Month
  • Premium Year$49.991 Year

Questions

Is SlideCrop free?
SlideCrop is free to download, with in-app purchases available.
Is Compress PDF free?
Compress PDF is free to download, with in-app purchases available.
Do SlideCrop or Compress PDF have ads?
Compress PDF shows ads; SlideCrop does not.
Which is updated more often, SlideCrop or Compress PDF?
SlideCrop ships an update every 2 weeks, and Compress PDF every 3 weeks. Most recently, SlideCrop was updated on November 5, 2026 and Compress PDF on November 10, 2026.

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