Comparison

Photo Compress & Image Resize vs UnderMB

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

Head to head
About

Photo Compress & Image Resize

Easily reduce image file sizes to save storage and facilitate sharing. This tool offers smart compression, batch processing, format conversion, and resizing capabilities to optimize your photos for various needs.

Highlights
  • Smart image compression
  • Batch compression
  • Format conversion
  • Image resizing
  • Image cropping
  • HD save
Features
Read full description

Photo Compressor is a professional and efficient photo compression and image processing tool. It helps you quickly reduce image file size, save space in your photo library, and keep your photos clear. Whether you need to share photos, upload images to social media, meet image upload size limits, or free up storage on your phone, you can use it for image compression, batch compression, format conversion, and image resizing. Main Features: 【Smart Compression】 Smart image compression quickly reduces photo file size with no visible quality loss. 【Batch Compression】 Select multiple photos at once and compress them in batches, reducing repeated steps and making it easier to process large photos in your album. 【Format Conversion】 Convert common image formats to meet different upload, saving, and sharing needs. 【Image Resize】 Adjust image width and height for avatars, social media posts, web uploads, and everyday sharing. 【Image Crop】 Easily crop any image area and quickly get the ratio and size you need. 【HD Save】 Save compressed images to your photo library for easy management, previewing, and sharing again. Use Cases: - Your photo library is running out of space and you want to compress photos to save storage - Images are too large to upload or send - You need to batch process multiple photos - You need to resize or crop images - You need to convert image formats for better compatibility - You want to compress images while keeping clear quality Photo Compressor makes photos smaller, sharing faster, and saving easier. This app is intended solely for compressing, cropping, resizing, and general editing of personal photos. Please ensure that you own the images or have obtained proper authorization to process them, and comply with all applicable laws, regulations, and platform policies. Do not use this app for any illegal activities or to infringe upon the lawful rights of others. Subscription Information - You can view subscription prices and upgrade to unlock all features through the in-app purchase page. - Payment: Payment will be charged to your iTunes account upon purchase confirmation. - Renewal: For monthly subscriptions, Apple iTunes will charge your account 24 hours before the subscription period ends. After a successful charge, the subscription period will be extended. - Cancellation: To cancel auto-renewal, go to "iTunes Store & App Store," tap "Apple ID," select "View Apple ID," and then access the "Account Settings" page. Tap "Subscriptions" and choose the subscription you wish to cancel. Privacy Policy: https://docs.qq.com/doc/p/1d495bcd4ee18d8d1f666bba54844c7cf0fb8c49 Agreement: https://docs.qq.com/doc/p/effd28bb24e8467ecda588a4a9ffe5acac2015cd

About

UnderMB

Reduce the size of photos, videos, audio, and PDFs on your device. Select a target file size or use presets for common uploads like email or chat apps. Preview your compressed files before saving or sharing, with optional metadata removal.

Highlights
  • Compress images, videos, audio, and PDFs
  • Choose target file size (KB/MB)
  • Built-in presets for uploads
  • Preview before saving
  • Optional metadata removal
  • Batch processing
Features
Read full description

UnderMB helps you reduce photo, video, audio, and PDF file sizes to fit common upload limits. Processing happens on your device. WHAT IT DOES • Choose a target size: 500 KB, 1 MB, 2 MB, 5 MB, or a custom value • Compress images, videos, audio files, and PDFs • Preview results before saving or sharing • Built-in presets for email, visa forms, WhatsApp, and similar uploads • Optional metadata removal (EXIF/GPS, PDF info) • Batch queue for multiple files • Save to Files or share from the app PRIVACY UnderMB does not require an account. Files are processed locally and are not uploaded to UnderMB servers. GOOD FOR • Forms and portals with file size limits • Smaller email attachments • Chat apps with upload caps • Reducing file size before sharing

Screenshots

Photo Compress & Image Resize4 screens
UnderMB4 screens

Verdict

The call

The clearest difference is in-app purchases: UnderMB at none against Photo Compress & Image Resize's 2. UnderMB also leads on update cadence (every 11 days vs monthly). Photo Compress & Image Resize's advantage is ads (none vs shown) and ratings volume (7 vs 1). On price, rating, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Photo Compress & Image Resize sells 2 in-app purchases, starting at $6.99 per 7 days. UnderMB asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Photo Compress & Image Resize against 5.0 for UnderMB. That said, the two scores are not equally well evidenced: Photo Compress & Image Resize has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Photo Compress & Image Resize ships an update monthly, UnderMB every 11 days. Both last shipped on October 31, 2026.

Scorecard5 real differences · 4 level
Photo Compress & Image Resize versus UnderMB: the parameters behind the verdict, then further details
ParameterPhoto Compress & Image ResizeUnderMB
PriceFreeFree
Rating4.9 (7 ratings)5.0 (1 ratings) — better
Number of ratings7 — better1
Update frequencyMonthlyEvery 11 days — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size29 MB9 MB
Age rating4+4+
DeveloperJackie MartinezCEMRE SIMSEK

In-app purchases

2 purchases

Photo Compress & Image Resize

Subscriptions2
  • Premium Membership3 Days trial$6.997 Days
  • Premium Membership$14.991 Month
None

UnderMB

No in-app purchases

Questions

Is Photo Compress & Image Resize free?
Photo Compress & Image Resize is free to download, with in-app purchases available.
Is UnderMB free?
UnderMB is free to download, with no in-app purchases.
Which has better reviews, Photo Compress & Image Resize or UnderMB?
UnderMB is rated higher. Photo Compress & Image Resize averages 4.9 out of 5 from 7 ratings, while UnderMB averages 5.0 from 1 ratings.
Do Photo Compress & Image Resize or UnderMB have ads?
UnderMB shows ads; Photo Compress & Image Resize does not.
Which is updated more often, Photo Compress & Image Resize or UnderMB?
Photo Compress & Image Resize ships an update monthly, and UnderMB every 11 days. Most recently, Photo Compress & Image Resize was updated on October 31, 2026 and UnderMB on October 31, 2026.

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