Comparison

Format Conversion格式转换 vs USCIS Verified Case Tracker

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
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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

USCIS Verified Case Tracker

Stay updated on your U.S. visa and citizenship case status with real-time notifications. This app allows you to track multiple USCIS and National Visa Center cases, receive alerts for status changes, and view the latest Visa Bulletin.

Highlights
  • Track USCIS and NVC cases
  • Real-time status updates
  • Automatic notifications
  • Visa Bulletin alerts
  • Search multiple cases
Features
Read full description

The app for tracking for cases for U.S. visas and citizenship. Stay informed with real-time case updates. Trusted by over 2 million immigrants and applicants worldwide. Key Features • Case Tracking: Track all valid receipt numbers. • Visa Tracking: Monitor immigrant and nonimmigrant Visa cases from the National Visa Center. • Case Search Tools: Look up multiple cases at once and view their latest status instantly. • Automatic Notifications: Get alerts when your case status changes, and when the latest Visa Bulletin is released. Why Choose Tracker? • Fast and reliable status updates • Simple, easy-to-use design • Covers multiple immigration agencies • Millions of users already trust Tracker for their immigration journey Disclaimer TRACKER for YOUR US CASE is not affiliated with any U.S. government entity and does not provide legal advice. We provide real-time case information sourced from publicly available government websites: • USCIS: https://egov.uscis.gov/casestatus/landing.do • NVC/CEAC: https://ceac.state.gov/ceac/ All information is public and provided in compliance with USCIS website policies. Accuracy is not guaranteed and case details may not be used in legal proceedings. Privacy Policy: https://www.notion.so/c8bcea036ef3449aa6d6345f7533d6cb Terms & Conditions: https://www.notion.so/c21f4eed4e5848b8a95baafa8cc1cf27

Screenshots

Format Conversion格式转换4 screens
USCIS Verified Case Tracker3 screens

Verdict

The call

The clearest difference is update cadence: USCIS Verified Case Tracker at every 2 weeks against Format Conversion格式转换's every 5 months. Format Conversion格式转换's advantage is iOS requirement (15.6 vs 18.0). On price, ads, 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 USCIS Verified Case Tracker sells 4 in-app purchases, starting at $29.99 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, USCIS Verified Case Tracker every 2 weeks. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

Scorecard2 real differences · 8 level
Format Conversion格式转换 versus USCIS Verified Case Tracker: the parameters behind the verdict, then further details
ParameterFormat Conversion格式转换USCIS Verified Case Tracker
PriceFreeFree
Rating—4.6 (604 ratings) — better
Positive reviews—85.7% of reviews
Number of ratings—604 — better
Update frequencyEvery 5 monthsEvery 2 weeks — better
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPod — betteriPhone
Requires iOS15.6 — better18.0
Further details — not scored
Size29 MB164 MB
Age rating4+4+
Developer彦 唐Esthete

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
4 purchases

USCIS Verified Case Tracker

Subscriptions4
  • Tracker Weekly3 Days trial$29.997 Days
  • Tracker Weekly Regular$29.997 Days
  • Tracker Monthly$39.991 Month
Show 1 more
  • Tracker Annually$99.991 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 USCIS Verified Case Tracker free?
USCIS Verified Case Tracker is free to download, with in-app purchases available.
Do Format Conversion格式转换 or USCIS Verified Case Tracker have ads?
Neither Format Conversion格式转换 nor USCIS Verified Case Tracker shows ads.
Which is updated more often, Format Conversion格式转换 or USCIS Verified Case Tracker?
Format Conversion格式转换 ships an update every 5 months, and USCIS Verified Case Tracker every 2 weeks. Most recently, Format Conversion格式转换 was updated on September 30, 2026 and USCIS Verified Case Tracker on October 2, 2026.

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