Comparison

Format Conversion格式转换 vs iDocs

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

Head to head
About

Format Conversion格式转换

Features
Read full description

Format Conversion - Universal Format King is a multifunctional and versatile format conversion tool. Support document conversion, document scanning, PDF image export, image format conversion, image size compression, image ratio adjustment, vertical and horizontal image stitching, audio format conversion, video audio extraction, mobile ringtone production, setting mobile ringtones, audio cropping, audio stitching, audio mixing and synthesis, etc. *Document processing -Document Conversion: Supports converting dozens of document formats into PDF format. -PDF to Word: Convert PDF to Word format for easy editing and modification. -PDF image export: Export PDF images, supporting page by page image, long image stitching, and GIF animated image export. -Document scanning: Referring to a physical scanner, it can quickly scan and automatically correct distorted images. It can be customized with cropping adjustments and supports black and white, grayscale, and filter processing. It also supports exporting PDFs or images for easy printing *Image processing -Image format conversion: Batch convert images to various formats, including JPG, PNG, JPEG, GIF, WebP, BMP, TIFF, TIFF, Tag, and ICO. -Image size compression: Batch high-definition compression of image size, reducing size without compromising image quality and minimizing storage space usage. -Image scale adjustment: Supports 9:16, 16:9, 1:1, 3:4, 4:3, 6:7, 21:9, 9:21 scale adjustment, and can also be customized. It can adapt or fill the screen, and can set background blur and background color. -Image stitching: Supports vertical and horizontal stitching, and can set borders, spacing, rounded corners, background color, text, and stickers, etc. *Audio processing -Audio format conversion: Supports multiple audio format conversions. -Video audio extraction: Extract audio from videos, editable. -Creating mobile ringtones: Create and set your favorite music as a personalized ringtone that supports multiple music platforms. Support audio splicing, audio mixing and synthesis, audio cropping, etc. -Audio cropping: Crop the audio duration according to your own needs. Regarding PRO subscription: The subscription price is 12 yuan per week, 28 yuan per month, 98 yuan per year, and 168 yuan for permanent one-time purchase. The price may vary depending on the marketing policies at that time. Weekly, monthly, and yearly subscriptions will automatically renew unless auto renewal is turned off at least 24 hours before the end of the current period. The account will be charged a renewal fee within 24 hours before the end of the current period, and the renewal fee subscription can be managed by the user, and automatic renewal can be turned off by transferring to the user's App Store account settings after purchase. User terms: http://privacypolicy.yayaxiaoqu.com.cn/formatconversion/user_agreement.html Privacy Policy: http://privacypolicy.yayaxiaoqu.com.cn/formatconversion/privacy_policy.html

About

iDocs

Features
Read full description

iDocs – All-in-One File Manager, Converter & AI Assistant Manage, convert, edit, and protect your files like never before. iDocs is the complete digital companion that combines powerful file management, media tools, and AI-powered productivity in a single app. Whether you’re a student, professional, or just looking for an easier way to stay organized, iDocs has you covered. UNIVERSAL FILE MANAGEMENT No matter the file type, iDocs handles it all: - Documents: PDF, Word, Excel, PowerPoint, Text - Media: Images, Videos, Audio files - Tools for renaming, organizing, moving, sharing, and securing files Your files stay safe, accessible, and organized in one convenient place. ADVANCED FILE CONVERSION Convert files instantly with our built-in converters: - Video & Audio: MP4 to MP3, MOV to MP4, WAV to MP3, audio transcription - Documents: Convert PDFs to Word, Excel, PowerPoint, Text, or Images — and vice versa - Images: Convert HEIC to JPG, PNG to JPG, and more PDF TOOLS THAT DO MORE Turn iDocs into your personal PDF toolbox: - Merge multiple PDFs into one - Compress PDFs to reduce file size without losing quality - Add or remove password protection with Lock & Unlock IMAGE UTILITIES Optimize your photos in seconds: - HEIC to JPG conversion for easy sharing - Smart image compression - Simple editing tools to adjust your images ZIP & UNZIP FILES Save storage and share with ease by compressing your files into zips, or open compressed files instantly. PRIVATE WEB BROWSER Browse the web securely and privately. Our built-in browser keeps your data protected with no history tracking. AI ASSISTANT & PRODUCTIVITY TOOLS Take advantage of powerful AI to make your work and life easier: - AI Chat Assistant – Ask questions, brainstorm, and get instant answers - Translator – Translate text across dozens of languages - Math Solver – Solve equations and word problems step by step - Writer – Draft essays, articles, or creative content effortlessly - Plant Identifier – Discover plants and flowers around you - Story Creator – Inspire creativity with unique story ideas BUILT-IN MEDIA PLAYER Play all your videos and music without leaving the app: - Support for all major media formats - Background audio playback so you can enjoy music while using other apps WHY CHOOSE IDOCS? Unlike ordinary file managers, iDocs combines file management, file conversion, PDF tools, image editing, secure browsing, and AI assistance into one seamless experience. It’s fast, easy to use, and designed for anyone who wants to stay productive on the go. Whether you need to: - Convert PDF to Word, Excel, or Images - Transcribe audio or extract MP3s from video - Protect important documents with passwords - Compress and share files quickly - Get AI-powered help with schoolwork, writing, or problem-solving iDocs is the only app you need. Download iDocs today and take control of your digital world — one app, endless possibilities. Privacy Policy: https://idocs.dngsoft.com/privacy-policy Terms of Use: https://idocs.dngsoft.com/terms-of-use

Screenshots

Format Conversion格式转换4 screens
iDocs4 screens

Verdict

The call

The clearest difference is ads: Format Conversion格式转换 at none against iDocs's shown. Format Conversion格式转换 also leads on iOS requirement (15.6 vs 17.0). iDocs's advantage is update cadence (daily vs every 5 months). On price, in-app purchases and device support 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. Format Conversion格式转换 sells 4 in-app purchases, starting at $1.99 per 7 days and iDocs sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Format Conversion格式转换 ships an update every 5 months, iDocs daily. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

Scorecard3 real differences · 3 level
Format Conversion格式转换 versus iDocs: the parameters behind the verdict, then further details
ParameterFormat Conversion格式转换iDocs
PriceFreeFree
Update frequencyEvery 5 monthsDaily — better
AdsNo — betterYes
In-app purchasesYesYes
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size29 MB36 MB
Age rating4+17+
Developer彦 唐DNG SOFT COMPANY LIMITED

In-app purchases

4 purchases

Format Conversion格式转换

Subscriptions3
  • PRO Weekly Subscription$1.997 Days
  • PRO Monthly Subscription$3.991 Month
  • PRO Yearly Subscription3 Days trial$14.991 Year
One-time1
  • Permanent PRO$24.99
2 purchases

iDocs

Subscriptions2
  • iDocs PRO7 Days trial$4.997 Days
  • iDocs PRO$49.991 Year

Questions

Is Format Conversion格式转换 free?
Format Conversion格式转换 is free to download, with in-app purchases available.
Is iDocs free?
iDocs is free to download, with in-app purchases available.
Do Format Conversion格式转换 or iDocs have ads?
iDocs shows ads; Format Conversion格式转换 does not.
Which is updated more often, Format Conversion格式转换 or iDocs?
Format Conversion格式转换 ships an update every 5 months, and iDocs daily. Most recently, Format Conversion格式转换 was updated on October 16, 2026 and iDocs on October 2, 2026.

Other comparisons