Comparison

Kompressor vs PhotoRiver

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

Head to head
About

Kompressor

Convert RAW photos from your iPhone or DSLR into compressed JPEG or HEIC formats. Maintain control over quality, size, and metadata with flexible compression and resizing options. All processing is done offline on your device for complete privacy.

Highlights
  • RAW to JPEG/HEIC conversion
  • Adjustable compression levels
  • Flexible image resizing
  • Metadata preservation and control
  • Batch conversion up to 25 images
  • 100% offline processing
  • Preview converted images
Features
Read full description

Kompressor (a compressor with a K!) is a powerful yet simple image converter for your iPhone and iPad. Convert your photos — RAW files from your iPhone or DSLR camera*, or standard lossy images already in your library — into compressed JPEG or HEIC formats while maintaining control over quality, size, and metadata. REQUIREMENT: You need existing photos in your Photo Library to convert. Kompressor does not capture photos — it converts the image files you already have. KEY FEATURES: Convert up to 25 images at once Support for both RAW and standard (JPEG, HEIC, PNG) input formats Support for JPEG and HEIC output formats Adjustable compression levels (50%, 75%, 95%) Flexible image resizing options Complete control over metadata preservation Detailed metadata options including EXIF, GPS, TIFF, and more Device-specific metadata support (Apple, Canon, Nikon, Fuji, Olympus, Pentax, Minolta) Comprehensive compression statistics and charts Preview converted images before saving Clean, intuitive interface 100% offline processing - no data collection Support for iPhone, iPhone Duo, and iPad METADATA CONTROL: Kompressor gives you granular control over which metadata to preserve: Image Depth & Orientation EXIF, GPS, and TIFF metadata IPTC information Camera manufacturer-specific data DNG metadata Custom creation date options COMPRESSION OPTIONS: Choose from three quality levels: 50% - Maximum compression for space savings 75% - Balanced quality and size 95% - Near-original quality with significant size reduction RESIZING OPTIONS: Reduce image dimensions while maintaining aspect ratio: 50% - Half the original size 75% - Three-quarters of original size 100% - Keep original dimensions PRIVACY FIRST: All processing happens directly on your device. No analytics, no tracking, no cloud processing. Your photos stay completely private. PERFORMANCE: Optimized for modern iOS devices with support for the latest iPhone and iPad models, including adaptive layout for iPhone Duo. The app limits batch conversions to 25 images to ensure optimal performance. Perfect for photographers who want to: Free up storage space by converting RAW or JPEG files Re-compress existing photos to smaller sizes Share photos in more compatible formats Control file sizes for uploads Manage photo metadata Convert images without complex desktop software Made with love in Toronto * Digital Negative (DNG) file Note: Photo library access is required to convert images.

About

PhotoRiver

Organize and display your photos with a professional management tool. Browse images in river or grid modes, manage albums, and create life diaries with customizable templates. Perfect for preserving your memories.

Highlights
  • River and grid photo display
  • System and custom album management
  • Photo and text life diaries
  • Multiple photo wall templates
  • Smooth photo browsing experience
Features
Read full description

This app uses Apple's Standard End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ PhotoRiver makes organizing your photo library as easy as browsing it. Swipe through your photos and videos full screen, and favorite, tag, or delete each one as you go. IMMERSIVE BROWSING • Swipe up and down, one photo per screen, with videos playing automatically • Favorite, tag, categorize, add notes, or add to albums and diaries right on the photo • Recommended, Memories, and To Organize filters • Switch between four views: River, Grid, Immersive, and Cards CLEANUP HUB • Duplicates and similar photos: compare in groups and keep the best one • Blurry photos: find the shots that didn't come out • Bursts and Live Photos: keep the best frame, clear the rest • Screenshot archiving: clear out screenshots you no longer need, in batches • Large files and video compression: see what's using your storage and compress videos in the app • Monthly review: a few minutes a month keeps your library tidy CAPTURE AND CREATE • Photo diary: combine photos with text, mood, and weather • Photo walls: templates and backgrounds for shareable collages • Albums: manage system and custom albums together • iCloud sync: favorites, tags, and diaries sync across your devices PRIVACY AND SAFETY • All photo analysis happens on your device and is never uploaded to our servers • Every deletion is confirmed first, and deleted photos stay in Recently Deleted for 30 days

Screenshots

Kompressor3 screens
PhotoRiver4 screens

Verdict

The call

The clearest difference is price: PhotoRiver at Free against Kompressor's $2.99. PhotoRiver also leads on review sentiment (100% vs 57%) and rating (5.0 vs 3.8). Kompressor's advantage is in-app purchases (none vs 4) and ratings volume (28 vs 3). On 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

CostPrice · In-app purchases · Ads · Monetization

PhotoRiver is free to download; Kompressor costs $2.99 up front. PhotoRiver sells 4 in-app purchases, starting at $2.99 per month. Kompressor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

PhotoRiver holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Kompressor has 28 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 57% of Kompressor's written reviews are positive against 100% of PhotoRiver's.

UpkeepUpdate frequency

Kompressor ships an update every 2 months, PhotoRiver fortnightly. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

Scorecard7 real differences · 3 level
Kompressor versus PhotoRiver: the parameters behind the verdict, then further details
ParameterKompressorPhotoRiver
Price$2.99Free — better
Rating3.8 (28 ratings)5.0 (3 ratings) — better
Positive reviews57.1% of reviews100.0% of reviews — better
Number of ratings28 — better3
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad — betteriPhone
Requires iOS18.018.0
Further details — not scored
Size2 MB21 MB
Age rating4+4+
DeveloperMaysoft Inc.Naihe Hu

Customer experience

Kompressor

All ratings28 ratings
Positive71.4%
Neutral3.6%
Negative25.0%
Written reviews21 reviews
Positive57.1%
Neutral4.8%
Negative38.1%

PhotoRiver

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Kompressor

No in-app purchases

4 purchases

PhotoRiver

Subscriptions2
  • Monthly Subscription7 Days trial$2.991 Month
  • Annual Subscription$24.991 Year
One-time2
  • Classic$6.99
  • Lifetime Purchase$14.99

Questions

Is Kompressor free?
Kompressor costs $2.99, with no in-app purchases.
Is PhotoRiver free?
PhotoRiver is free to download, with in-app purchases available.
Which has better reviews, Kompressor or PhotoRiver?
PhotoRiver is rated higher. Kompressor averages 3.8 out of 5 from 28 ratings, while PhotoRiver averages 5.0 from 3 ratings.
Do Kompressor or PhotoRiver have ads?
Neither Kompressor nor PhotoRiver shows ads.
Which is updated more often, Kompressor or PhotoRiver?
Kompressor ships an update every 2 months, and PhotoRiver fortnightly. Most recently, Kompressor was updated on October 30, 2026 and PhotoRiver on October 25, 2026.

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