Comparison

JPEG/HEIF Converter vs Slean

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

Head to head
About

JPEG/HEIF Converter

Features
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[Solve Storage & Sharing Issues! The Photo Converter for Quality Seekers] "JPEG/HEIF Converter" easily converts photo formats on your iPhone, saving storage space and solving compatibility issues. [Why Use This App?] Save Space: JPEG to HEIF Convert past JPEG photos to the next-gen HEIF format. Maintain quality while halving file size (up to 80% reduction depending on the photo!). Drastically free up your iPhone's storage. *Note: Image quality cannot exceed the original source. Share Anywhere: HEIF to JPEG Solve HEIC compatibility issues—like failing to open on Windows PCs or upload to websites—by converting to the universally supported JPEG format. Preview with Confidence Worried about quality loss? Thoroughly check degradation and file size changes before converting. Use side-by-side or toggle previews, and verify PSNR (an objective image quality metric) to safely compress precious photos. [Key Features] [Single Image Mode] Split View: Compare original and converted images side-by-side, zoomed in to check pixel-by-pixel details. Toggle View: Switch between images in the exact same position to spot minute changes. Measure Mode: Automatically tests multiple quality levels and graphs the optimal balance of file size and quality. Tap a point to preview and convert. [Batch Conversion (Up to 3 images for free)] Quality Priority (0.8): Preserves maximum visual beauty. Size Priority (0.5): Drastically reduces storage space while maintaining reasonable quality. [Other Useful Tools] Swipe to Delete: Swipe left on the list to delete directly from your library. Local Filters: Instantly toggle display of JPEG, HEIF, PNG, and TIFF formats. PNG Settings: Choose to convert PNGs to either HEIF or JPEG. Auto-Delete: Automatically delete original images after conversion to save space. [Premium Plan (Annual)] Unlock useful features for a more comfortable experience: Batch Limit: Convert up to 50 images at once. Dedicated Album: Auto-save converted images to a specific album. Remove Metadata: Strip Exif data during conversion to protect privacy. Remove Location: Swipe to easily delete location data (option to keep original available). Ad-Free: Permanently hide all ads. [Free User Bonuses] Enjoy unlimited, completely ad-free conversions for the first 24 hours after installation! Afterward, watch a video ad to get 5 minutes of ad-free use and fully unlocked features. We hope this app helps you manage your photos comfortably—whether saving space for precious memories or quickly converting them for sharing. Download and try it today! Privacy Policy: https://kawasuke.wixsite.com/kawasukestore/privacy-policy EULA:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Slean

This app securely cleans your photo and video gallery by processing everything locally on your device. It helps free up storage space by finding duplicates, compressing files, and allows for AI-powered photo editing without uploading your data.

Highlights
  • AI Photo Editing
  • Duplicate Detection
  • Smart Compression
  • On-Device Processing
  • On This Day Feature
  • Image Resizer
Features
Read full description

Slean is the privacy-first photo & video cleaner that works entirely on your device — nothing leaves your phone. Lightweight at just 15MB, it's built for secure, local management of your gallery — protecting your privacy while freeing up space. No cloud uploads. No tracking. No hidden data collection. No Ads. All basic features are free. Slean processes every photo, video, and scan locally; so your private moments stay yours. NEW: -Pixel Stretch Effects Create trendy pixel stretch edits from your photos in seconds. Turn ordinary pictures into stylish, social-ready visuals with a modern stretched-motion look. - On This Day View all photos taken on this date across years and make cleanup easier by tackling them day by day. - AI Photo Editing With AI (powered by Google Gemini 3 Pro Image - a.k.a Nano Banana 2 Pro), you can transform photos just by typing what you want. Ask to remove a person in the background, change a T-shirt’s color, add glasses, or turn the sky into a sunset — the AI applies your edits quickly. - A complete redesign. Slean now features a modern look fully aligned with iOS 26’s Liquid Glass design. Every screen has been refreshed for clarity and consistency, with updated visuals and system-style interactions across the app. ** Why Choose Slean?
** Unlike other “cleaner” apps, Slean never sends your media to servers or AI systems. Every scan, sort, and delete is done offline, keeping your personal data safe. Download Slean for free today to free up space without giving up your privacy. Key Features:
 • Pixel Stretch Effects: Create trendy stretched-motion photo edits for social media • AI Photo Editing : Describe the change — remove people, recolor clothes, add glasses, turn skies to sunset — AI edits the photo instantly • Image Resizer: Instantly resize photos for Instagram Stories (9:16), posts (4:5), or square (1:1) with 7 presets, an orientation toggle, and custom backgrounds • On This Day: View all photos taken on this date across different years and declutter your memories day by day • Privacy-First: 100% on-device processing
 • Sort & Filter: Organize media by size, date, or type (photos, videos, screenshots, favorites, duplicates)
 • Duplicate Detection: Find and delete exact or similar copies instantly
 • Smart Compression: Reduce file sizes without losing quality; save as copies or replace originals
 • Crop & Rotate: Adjust images without leaving the app
 • Size-Based Search: Quickly locate large files (10MB, 50MB, 1GB, etc.)
 • Bulk Delete: Select multiple files and wipe them in one tap
 • Detailed View: Preview in full screen, view file details, share, move, or compress
 • Statistics: See exactly how much space you’ve saved Download Slean free to quickly find, compress and delete large files in your gallery and solve your storage problems! ---- Slean operates entirely locally on your device. It does not collect, store, or transmit any data or information (except subscription related data for PRO features and optional AI editing feature). All photo-related processing is performed within the device. User privacy is Slean's top priority; we respect the confidentiality of your data. Privacy Policy: https://slean.app/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

JPEG/HEIF Converter4 screens
Slean4 screens

Verdict

The call

The clearest difference is ads: Slean at none against JPEG/HEIF Converter's shown. Slean also leads on update cadence (every 2 days vs weekly) and device support (3 vs 1). On price 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. JPEG/HEIF Converter sells 3 in-app purchases, starting at $0.49 per year and Slean sells 11 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

JPEG/HEIF Converter ships an update weekly, Slean every 2 days. The most recent releases landed on September 14, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
JPEG/HEIF Converter versus Slean: the parameters behind the verdict, then further details
ParameterJPEG/HEIF ConverterSlean
PriceFreeFree
Rating4.7 (12 ratings) — better
Positive reviews90.9% of reviews
Number of ratings12 — better
Update frequencyWeeklyEvery 2 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.015.0 — better
Further details — not scored
Size10 MB68 MB
Age rating4+4+
DeveloperMasashi KawakamiEmre ERTUNC

In-app purchases

3 purchases

JPEG/HEIF Converter

Subscriptions2
  • Yearly plan Only Ads$0.491 Year
  • Yearly plan7 Days trial$3.991 Year
One-time1
  • One-time Lifetime License$2.99
11 purchases

Slean

Subscriptions4
  • Slean Pro Monthly Subscription1 Month trial$2.991 Month
  • Slean Pro Monthly Subscription7 Days trial$2.991 Month
  • Slean Pro Weekly Subscription7 Days trial$5.997 Days
Show 1 more
  • Slean Pro Annual Subscription$29.991 Year
One-time7
  • 5 AI Image Generation Tokens$0.99
  • Short Coffee$0.99
  • Tall Coffee$1.99
Show 4 more
  • 20 AI Image Generation Tokens$2.99
  • Grande Coffee$2.99
  • 50 AI Image Generation Tokens$4.99
  • JET FUEL$4.99

Questions

Is JPEG/HEIF Converter free?
JPEG/HEIF Converter is free to download, with in-app purchases available.
Is Slean free?
Slean is free to download, with in-app purchases available.
Do JPEG/HEIF Converter or Slean have ads?
JPEG/HEIF Converter shows ads; Slean does not.
Which is updated more often, JPEG/HEIF Converter or Slean?
JPEG/HEIF Converter ships an update weekly, and Slean every 2 days. Most recently, JPEG/HEIF Converter was updated on September 14, 2026 and Slean on September 17, 2026.

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