Comparison

SlimSpace vs Compress PDF reduce pdf size

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

Head to head
About

SlimSpace

Free up device storage by reducing the size of photos and videos. This app offers offline compression with advanced algorithms to maintain quality. It supports various file formats and includes tools for cleaning up your photo library.

Highlights
  • Offline compression
  • No watermark or time limits
  • Advanced quality preservation
  • Supports major file formats
  • Customizable compression settings
  • Batch compression
  • Album and screenshot cleaner
Features
Read full description

Running out of storage space? Videos too large to send? Photos too big to share on WeChat or social media? Video & Photo Compressor is here to help! This app is your all-in-one solution for reducing file sizes without sacrificing quality. Whether it's videos, images, or other large files, you can compress them in just a few taps and save valuable storage on your device. 【Key Features】 • No watermark, no time limits • Offline compression — all processing happens locally on your phone. No internet needed, keeping your data secure • Advanced compression algorithms that preserve original quality while minimizing file size • Supports all major formats — MP4, MOV, AVI, MKV, 3GP, FLV, MPG, JPEG, PNG, and more • Customizable settings — choose compression priority: smaller size or better resolution • Preview results before saving • One-tap delete original files to save space instantly • Batch compression — process multiple files at once with ease 【More Space-Saving Tools】 • Album cleaner • Similar photo cleaner • Screenshot manager • Video splitter • File archiving and compression ========================== Compressor Pro Unlimited Subscription ========================== - Join Compressor Pro members, free to use all features, including all video & audio formats, ocr function, in addition, ads will be automatically removed. - Compressor Pro Unlimited subscription is billed monthly or annually at the rate correspnding to the selected plan. In addition, a one-time payment will be offered if needed, which is not one of the subscription plan. - Payment will be charged to Itunes Account at confirmation of purchase. - Subscriptions automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. - Terms of use : https://www.jianshu.com/p/7b3c05310c93 - Privacy policy: https://www.jianshu.com/p/4a71bed09de0

About

Compress PDF reduce pdf size

Easily reduce the size of your PDF files by up to 95% with multiple compression levels. Share your smaller PDF documents quickly and efficiently. Offers a clean and user-friendly interface for fast processing.

Highlights
  • Compress PDFs up to 95%
  • Multiple compression levels
  • Fast and easy to use
  • Share compressed files
  • Nice design
Features
Read full description

With our app PDF compressor Small pdf size it will help you compress large file to small size, you can choose large pdf files then compress them up to 95%. You will find in Compress PDF File Reduce Size : Compress PDF File to Small Size that you want to share. Multiple levels of compression support Nice design Fast and easy to use Compressed by more than 90% Share Compressed PDF files. PDF compressor Small pdf size tool app makes it easy for you to compress PDF files and make its size smaller. Subscription details: 1 week 1 month 1 annual Lifetime PLEASE NOTE You will need a subscription in order to unlock all the features. * Each subscription will be automatically renewed unless auto-renew is turned off at least 24 hours before the end of the current payment period. * Your iTunes account will be automatically charged at the same price for renewal within the 24-hour period prior to the end of the current payment period unless you change your subscription preferences in your iTunes Account Settings. * Payment will be charged to iTunes Account at confirmation of purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Terms of Use & Privacy Policy: https://www.creativesapps.com/compress-pdf-files-privacy

Screenshots

SlimSpace4 screens
Compress PDF reduce pdf size4 screens

Verdict

The call

SlimSpace and Compress PDF reduce pdf size both sit at 4.6 stars, but that hides the real split: 67% of SlimSpace's written reviews are positive against 0% of Compress PDF reduce pdf size's. SlimSpace also leads on ratings volume (998 vs 37). Compress PDF reduce pdf size's advantage is ads (none vs shown). On price, rating, update cadence and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. SlimSpace sells 4 in-app purchases, starting at $0.69 per 7 days and Compress PDF reduce pdf size sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for SlimSpace against 4.5 for Compress PDF reduce pdf size. That said, the two scores are not equally well evidenced: SlimSpace has 998 ratings behind it against 37, so its average is the more settled of the two. Written reviews are what separate them: 67% of SlimSpace's written reviews are positive against 0% of Compress PDF reduce pdf size's.

UpkeepUpdate frequency

SlimSpace ships an update every 2 weeks, Compress PDF reduce pdf size every 3 weeks. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

Scorecard3 real differences · 7 level
SlimSpace versus Compress PDF reduce pdf size: the parameters behind the verdict, then further details
ParameterSlimSpaceCompress PDF reduce pdf size
PriceFreeFree
Rating4.6 (998 ratings) — better4.5 (37 ratings)
Positive reviews67.3% of reviews — better0.0% of reviews
Number of ratings998 — better37
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsYesNo — better
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size41 MB20 MB
Age rating4+4+
DeveloperHappyTimes Tech Co., Ltd.Nouhayla Moustaine

Customer experience

SlimSpace

All ratings998 ratings
Positive90.5%
Neutral2.3%
Negative7.2%
Written reviews394 reviews
Positive67.3%
Neutral5.3%
Negative27.4%

Compress PDF reduce pdf size

All ratings37 ratings
Positive89.2%
Neutral0.0%
Negative10.8%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Bugs and requests

SlimSpace

Reported bugs

5 issues
  • Videos not resizing properly
  • Compressed photos not saving to album
  • Paid features not working as expected
  • App crashing on launch or during compression
  • Excessive data usage

Requested features

5 requests
  • Batch compression option
  • More compression quality settings
  • Ability to preview compressed files
  • Support for more file types
  • Improved error handling and feedback

Compress PDF reduce pdf size

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

SlimSpace

Subscriptions3
  • Upgrade(1 Week)$0.697 Days
  • Upgrade(1 Month)$3.491 Month
  • Compressor Vip(1 Year)3 Days trial$6.491 Year
One-time1
  • Upgrade(Forever)$18.99
4 purchases

Compress PDF reduce pdf size

Subscriptions3
  • Week$1.997 Days
  • Month$3.991 Month
  • Year$19.991 Year
One-time1
  • Lifetime$24.99

Questions

Is SlimSpace free?
SlimSpace is free to download, with in-app purchases available.
Is Compress PDF reduce pdf size free?
Compress PDF reduce pdf size is free to download, with in-app purchases available.
Which has better reviews, SlimSpace or Compress PDF reduce pdf size?
SlimSpace is rated higher. SlimSpace averages 4.6 out of 5 from 998 ratings, while Compress PDF reduce pdf size averages 4.5 from 37 ratings.
Do SlimSpace or Compress PDF reduce pdf size have ads?
SlimSpace shows ads; Compress PDF reduce pdf size does not.
Which is updated more often, SlimSpace or Compress PDF reduce pdf size?
SlimSpace ships an update every 2 weeks, and Compress PDF reduce pdf size every 3 weeks. Most recently, SlimSpace was updated on October 20, 2026 and Compress PDF reduce pdf size on October 12, 2026.

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