Comparison

EPUB Compressor vs FormatBox

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

Head to head
About

EPUB Compressor

Features
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Is your ebook library eating your storage? LiteBook shrinks EPUB files instantly. 100% on-device, no sign-up, no cloud. EPUBs are often full of hidden bloat, massive unoptimized images, and unnecessary code that eats up your storage. LiteBook is a lightning-fast utility designed to do one thing perfectly: shrink your ebooks without ruining your reading experience. Publishing to Amazon KDP or Draft2Digital? LiteBook helps you hit file size limits without re-editing your manuscript. Compress before upload in seconds. Whether you are managing a massive digital library or just trying to fit a few more books onto your device, LiteBook processes everything locally. Key Features: - 100% On-Device: Your books never leave your phone. Total privacy and offline capability. - No Sign-Up, Ever: Open and compress immediately - Two Compression Modes: Balanced for daily use, Maximum for critical storage recovery - Visual Quality Protected : Strips XML bloat and junk metadata, never touches your text -Batch Processing: Optimize multiple books at once to clean up your entire library in a single tap. Reclaim your storage. No account needed, no files uploaded, no excuses. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FormatBox

Features
Read full description

Your all-in-one toolbox for photos, videos, PDFs, audio, and archives. Convert, compress, resize, sign, and organize β€” 100% on your iPhone. No cloud, no uploads, no account, no data collection, ever. WHAT YOU CAN DO QUICK CONVERT β€’ HEIC to JPG, HEVC to H.264 β€” for universal compatibility β€’ Open modern web images (WebP, AVIF, JPEG XL) and convert to JPG β€’ Convert camera RAW files (DNG, CR2, NEF, ARW…) to JPG or HEIC, in batch IMAGE TOOLS β€’ Resize by percentage, dimension, or target file size in KB β€’ Remove the background from any photo β€” transparent, white, or black β€’ Add a text watermark to photos and videos β€’ Batch rename files with a custom prefix, suffix, and numbering pattern β€’ Extract text from any photo with on-device OCR β€” copy it or export as .txt β€’ Crop, rotate, and adjust brightness/contrast before you share PDF TOOLS β€’ Scan documents with your camera β€” automatic edge detection and perspective correction β€’ Combine photos into a PDF, or export every PDF page as an image β€’ Merge, split, reorder, and rotate PDF pages β€’ Draw a signature and stamp it onto any page β€’ Add a searchable, invisible OCR text layer to scanned PDFs β€’ Compress image-heavy PDFs to a fraction of the size VIDEO & AUDIO β€’ Compress video to a target size β€” 10 MB, 25 MB, 50 MB, or custom β€’ Trim the start or end of any video, losslessly β€’ Extract audio from video as M4A β€’ Convert audio between M4A, WAV, FLAC, ALAC, and MP3 (128/192/320 kbps), with trimming ARCHIVE TOOL β€’ Zip files together for sharing or backup β€’ Create password-protected ZIP files β€’ Extract ZIP, RAR, 7Z, and TAR archives EBOOK, VECTOR & FONT TOOLS β€’ Convert PDF to EPUB and EPUB to PDF β€’ Convert SVG to PNG/JPG, or vectorize simple icons into SVG β€’ Convert TTF and OTF fonts with the bundled offline font engine PRIVACY β€’ Strip GPS location, timestamps, and camera info from photos before you share them β€” see exactly what's embedded first IPHONE SPECIAL β€’ Split Live Photos into a still JPG/HEIC and a motion MOV β€’ Turn animated GIFs into MP4 video BATCH PROCESSING Select 100+ files at once and convert them all in one tap. Mixed photos, videos, and formats welcome. PRIVACY FIRST Everything runs on your iPhone. No cloud uploads. No tracking. No ads. No accounts. Terms of Use: https://taxlite.net/format_box/terms.html Privacy Policy: https://taxlite.net/format_box/privacy.html

Screenshots

EPUB Compressor4 screens
FormatBox4 screens

Verdict

The call

The clearest difference is iOS requirement: EPUB Compressor at 15.5 against FormatBox's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. EPUB Compressor sells 2 in-app purchases, starting at $2.99 per month and FormatBox sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

EPUB Compressor ships an update every 2 months, FormatBox monthly. Both last shipped on October 25, 2026.

Scorecard1 real difference Β· 5 level
EPUB Compressor versus FormatBox: the parameters behind the verdict, then further details
ParameterEPUB CompressorFormatBox
PriceFreeFree
Update frequencyEvery 2 monthsMonthly β€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPod β€” betteriPhone
Requires iOS15.5 β€” better17.0
Further details β€” not scored
Size60 MB21 MB
Age rating4+4+
DeveloperSAMUEL NNAEMEKA ON YE JIZHENGQIAO JIANG

In-app purchases

2 purchases

EPUB Compressor

Subscriptions2
  • monthly$2.991 Month
  • yearly$19.991 Year
4 purchases

FormatBox

Subscriptions3
  • Weekly3 Days trial$1.997 Days
  • Monthly$4.991 Month
  • Yearly3 Days trial$29.991 Year
One-time1
  • Lifetime$79.99

Questions

Is EPUB Compressor free?
EPUB Compressor is free to download, with in-app purchases available.
Is FormatBox free?
FormatBox is free to download, with in-app purchases available.
Do EPUB Compressor or FormatBox have ads?
Neither EPUB Compressor nor FormatBox shows ads.
Which is updated more often, EPUB Compressor or FormatBox?
EPUB Compressor ships an update every 2 months, and FormatBox monthly. Most recently, EPUB Compressor was updated on October 25, 2026 and FormatBox on October 25, 2026.

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