Comparison

Diam vs Image Converter & Compressor

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

Head to head
About

Diam

Features
Read full description

'Diam' is a diary app designed to preserve your precious memories in a simple and beautiful way. The name 'Diam' combines 'Diary' and 'Diamond', symbolizing that your daily records are as valuable as diamonds. This app features an easy-to-use design, making it perfect for recording daily events and emotions. You can add photos to your diary entries, allowing you to visually recall your memories. Additionally, you can swipe through entries as if flipping through a paper diary, making navigation intuitive. With the calendar function, you can instantly see which days have diary entries. It's easy to look back on past memories even in your busy life. Keep your memories safe and enrich your daily life with 'Diam'. Download this simple, functional, and beautiful diary app now and start recording your diamond-like moments.

About

Image Converter & Compressor

Convert multiple images to various formats like JPG, PNG, and PDF in batches. Easily manage, preview, save, and share your converted files with a simple and intuitive interface.

Highlights
  • Batch conversion to JPG, PNG, HEIC, WebP, TIFF, PDF, AVIF, GIF
  • Preview converted images before saving
  • Save, share, or delete converted images in bulk
  • Simple and intuitive interface
  • Supports HEIC to JPG, PNG, and PDF conversion
Features
Read full description

Convert HEIC to JPG, save photos as PNG or PDF, and create WebP or AVIF images for the web. Image Converter & Compressor lets you batch convert photos and images on your iPhone. Select images from your photo library or Files, then choose an output format. Keep your images in a consistent format or adjust the balance between image quality and file size. 8 OUTPUT FORMATS Convert images to JPEG (JPG), PNG, HEIC, WebP, AVIF, GIF, TIFF, or PDF. • Convert HEIC photos to JPEG (JPG) for sharing or uploading to services that require JPG. • Export photos and screenshots as PNG. • Create WebP and AVIF images for websites and blogs. • Save as HEIC, TIFF, or a still GIF to suit your needs. • Turn photos and images into PDF files to share. GIF output is a still image. Creating or preserving GIF animation is not supported. PDF conversion creates a separate file for each image. ADJUST QUALITY AND COMPRESS IMAGES JPEG, HEIC, WebP, and AVIF support quality settings. The free version converts at an 85% quality setting. Pro lets you adjust quality from 10% to 100%. Choose a higher setting to prioritize image quality, or a lower setting to reduce file size for email attachments and web use. The percentage is an encoding quality setting. Even 100% does not guarantee identical quality to the original. Output file size varies by image and format. Quality adjustment is not available for PNG, GIF, TIFF, or PDF. BATCH CONVERSION Select multiple images from your photo library or Files and convert them to the same format in one batch. Track the number of images being processed as conversion progresses. PREVIEW, SAVE, AND SHARE Preview converted images before saving or sharing. Share or delete multiple converted files at once. When saving to your photo library, you can also choose an album or create a new one. Save PDFs to Files or another destination using the share menu. KEEP CAPTURE DATE AND LOCATION Pro can carry over the capture date and location information included in your original image. Turn each option on or off separately. Supported output formats for this feature: JPEG, PNG, HEIC, and TIFF. FREE AND PRO The free version lets you convert, save, share, or delete up to 4 images per operation. Formats that support quality settings use an 85% setting. Pro is a one-time purchase and includes: • Quality adjustment from 10% to 100% for JPEG, HEIC, WebP, and AVIF. • Batch conversion of 5 or more images. • Saving, sharing, or deleting 5 or more converted files at once. • Capture date and location preservation in supported formats. • Ad removal.

Screenshots

Diam4 screens
Image Converter & Compressor3 screens

Verdict

The call

The clearest difference is update cadence: Image Converter & Compressor at every 2 months against Diam's every 7 months. Diam's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17). On price, ads 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. Diam sells 2 in-app purchases, starting at $4.99 per month and Image Converter & Compressor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Diam ships an update every 7 months, Image Converter & Compressor every 2 months. The most recent releases landed on November 8, 2026 and November 12, 2026 respectively.

Scorecard3 real differences · 7 level
Diam versus Image Converter & Compressor: the parameters behind the verdict, then further details
ParameterDiamImage Converter & Compressor
PriceFreeFree
Rating—5.0 (2 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—2 — better
Update frequencyEvery 7 monthsEvery 2 months — better
AdsYesYes
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17
Further details — not scored
Size35 MB15 MB
Age rating4+4+
Developerkota tadaOsawa Shunsuke

In-app purchases

2 purchases

Diam

Subscriptions2
  • Ad-free for 1 month7 Days trial$4.991 Month
  • Ad-free for 1 year$49.991 Year
1 purchases

Image Converter & Compressor

One-time1
  • Pro Edition$3.99

Questions

Is Diam free?
Diam is free to download, with in-app purchases available.
Is Image Converter & Compressor free?
Image Converter & Compressor is free to download, with in-app purchases available.
Do Diam or Image Converter & Compressor have ads?
Both Diam and Image Converter & Compressor show ads.
Which is updated more often, Diam or Image Converter & Compressor?
Diam ships an update every 7 months, and Image Converter & Compressor every 2 months. Most recently, Diam was updated on November 8, 2026 and Image Converter & Compressor on November 12, 2026.

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