Comparison

Bluetooth U vs CrackX

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

Head to head
About

Bluetooth U

Easily transfer any type of file between your Apple devices using Bluetooth. This app also offers robust local file management, including sharing via Wi-Fi and USB, and a versatile file viewer for documents, photos, and videos.

Highlights
  • Bluetooth file transfer
  • No file type restrictions
  • Wi-Fi and USB file sharing
  • Local file management
  • Document and media viewer
  • Folder transfers
  • Photo library transfers
Features
Read full description

Bluetooth U ensure both devices(iPhone&iPod&iPad) transfer files mutually, No file type restrictions. *****specifically as follows: *****Bluetooth Action Looking for other iPad/iPhone/iPod Share files from local document via bluetooth Interrupt and resume downloading at any time Multiple File Transfers (Choose your files and transfer at once) Folder Transfers Photo Library (Multiple Photos/Cameras at once) Transfers Operate history Living progress *****Local File Sharing USB File Sharing via iTunes Http File Sharing via WiFi,Support Safari, chrome, firefox and IE6/7/8/9 Chrome and Firefox Supported upload multiple files Email multiple files/folder Supported Open files using other applications *****Local File Manage New Folder Sorting by file name, create date and file type View, copy, move, delete, rename, email, zip Compression and unzip files/folders Glide deleting function Select all and Cancel all Photo import Supported Bookmark supported *****File View New plain text(default encoding UTF-8),Convert plain file encoding (Unicode,UTF-8 etc) [.txt] External file content copy or paste Photo View, Zoom [.png .jpg .jpeg .gif .bmp .xbm .tif .tiff etc]; Document reader [.pdf .rtf .csv .rtfd .doc .docx .xls .xlsx .ppt .pptx (office 2003 or later) etc] Video Player [.mp4] File Compression and Decompression [.zip .rar] Extract files from encryption .rar Multi-touch Supported, Zoom files Landscape mode supported iPad-compatible Transfer file to MacOS using Bluetooth U,Please download File Deliver https://itunes.apple.com/us/app/file-deliver/id1000489896?ls=1&mt=12

About

CrackX

Features
Read full description

Optimization of a Mixed-Feed Steam Cracker App is an interactive engineering tool for evaluating steam cracking performance and CO₂ storage feasibility. The app allows users to configure operating scenarios, compare key performance indicators, estimate process outputs, and assess whether captured CO₂ can be safely stored in a geological reservoir. It includes performance metrics, feasibility results, visual charts, and report generation to support academic analysis and technical decision-making. Designed for chemical and petroleum engineering education, the app helps connect process optimization with carbon management in one workflow.

Screenshots

Bluetooth U2 screens
CrackX4 screens

Verdict

The call

The clearest difference is in-app purchases: CrackX at none against Bluetooth U's 3. CrackX also leads on ads (none vs shown). Bluetooth U's advantage is iOS requirement (12.0 vs 14.0). On price 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. Bluetooth U sells 3 one-off in-app purchases. CrackX asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Bluetooth U versus CrackX: the parameters behind the verdict, then further details
ParameterBluetooth UCrackX
PriceFreeFree
Rating2.7 (17 ratings) — better—
Positive reviews47.4% of reviews—
Number of ratings17 — better—
Update frequencyEvery 2 months—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS12.0 — better14.0
Further details — not scored
Size40 MB26 MB
Age rating4+4+
Developer锦文 游Fatima Bazroun

Bugs and requests

Bluetooth U

Reported bugs

20 issues
  • App crashes on startup
  • Cannot connect to devices
  • Paid version does not work
  • App crashes after update
  • Location services required
Show 15 more
  • Files transfer as garbled text
  • Cannot transfer movies
  • Cannot transfer books
  • Cannot import photos to system album
  • Cannot lock screen during transfer
  • App exits unexpectedly
  • Does not allow multiple device connections
  • Does not support movie transfer
  • App crashes on iPad 1 / iOS 5.1
  • Cannot attach mobile phone
  • Bluetooth does not work on iOS 7 device
  • Files are lost during transfer (metadata)
  • App does not see devices
  • App pairs but won't connect
  • App crashes on launch

Requested features

7 requests
  • Custom file sorting option
  • Develop an app to use phone as Bluetooth headset
  • Support for remote FTP, media server, and remote folders
  • Improve UI layout on iPad
  • Allow app to stay connected
Show 2 more
  • Add Dropbox feature
  • Better help section/instructions

CrackX

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Bluetooth U

One-time3
  • Remove ads$0.99
  • Sync address book via bluetooth$0.99
  • Full Version$1.99
None

CrackX

No in-app purchases

Questions

Is Bluetooth U free?
Bluetooth U is free to download, with in-app purchases available.
Is CrackX free?
CrackX is free to download, with no in-app purchases.
Do Bluetooth U or CrackX have ads?
Bluetooth U shows ads; CrackX does not.

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