Comparison

File Converter vs Lens Smudge Detection

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

Head to head
About

File Converter

This app converts files between thousands of formats, saving you time and battery. It leverages cloud processing for faster conversions and allows you to continue using your device. Supports video, ebook, document, audio, image, 3D, CAD, and many other file types.

Highlights
  • Supports over 2,000 source formats
  • Cloud-based conversion for speed and battery saving
  • Video, ebook, document, audio, and image conversion
  • 3D, CAD, and scientific file format support
  • Archive compression and extraction
  • Metadata viewing and deletion
  • File repair for common formats
Features
Read full description

File Converter will convert from and to almost every file format while saving you time and battery! With support for over 2.000 source formats we're working hard to stay the most complete converter app. The File Converter app converts files in the conversion cloud so your battery isn't wasted, you can continue using your device and your conversions will be much faster. Convert to: • Video converter: convert movies to 3G2, 3GP, AVI, DPG, FLV, GIF, H264, M4V, Matroska MKV, Quicktime MOV, MP4, MPG, OGV, SWF, VOB, WebM VP8, WEBP and WMV. Profiles for iPad, iPhone, iPod, Nintendo, Playstation, Wii, XBOX, more! • Ebook converter: convert to AZW, AZW3, DJVU, DOCX, ePub, FB2, HTML, HTMLZ, LIT, LRF, MOBI, OEB, PDB, PDF, PML, PRC, RB, RTF, SNB, TCR, TXT, TXTZ, more! • Document converter: document to DJVU, Microsoft Word DOC, DOCX, HTML, Open-Office ODT, OTT, PDF, RTF, TEX, TXT, UOT, WPS • Presentation converter: ODP, OTP, PDF, PPS, PPSX, PowerPoint Presentation PPT, PPTX, SWF, UOP • Spreadsheet converter: CSV, DIF, GNM, HTML, ODS, OTS, PDF, SLK, TEX, TXT, UOS, XLSM, XLS, XLSX, XLT, XLTX, XML • Markup converter: DJVU, HTML, INFO, Markdown MD, PDF, TEX, TEXI, TEXT, TEXTILE, TXT, WIKI, more! • Audio converter: convert music to AAC, AC3, AIFF, FLAC, M4A, M4R, MIDI, MMF, MP3, MPA, OGG, OPUS, WAV, WMA • Image converter: convert photos to AI, BMP, EPS, EXR, GIF, HEIC, ICO, JPEG, JPG, PCX, PNG, PS, PSD, SVG, TGA, TIFF, WBMP, WEBP • 3D converter: convert 3d model to 3DS, BRP, CTM, DAE, FBX, IGS, OBJ, STL, STP, STPZ, WRL, X3D, GCODE, SVG, Slicing, more! • CAD converter: convert engineering drawing to DWG, DXF, PDF, Map tiles, more! • LaTeX / ConTeXt converter: research to PDF, TEX, DOCX • Color palette converter: ACO, ASE, CPL, GPL, JCW, JSON, SKP, SOC, TXT, XML, more! • Texture converter: ASTC, DDS, EXR, KTX, TGA • Mesh converter: FEM, MESH, MSH, OBJ, VTK, VTU • Font converter: convert fonts to BIN, CFF, DFONT, EOT, FON, OTF, PFA, PFB, PT3, T11, T42, TTF, TTF.BIN, UFO, WOFF, WOFF2, more! • Embroidery converter: CSD, DST, EXP, HUS, JEF, PCS, PEC, PES, SEW • Statistics converter: Stata DTA, SPSS SAV, SAS SAS7BDAT, SAS XPT • GPS converter: convert gps tracks to CSV, GDB, GPX, HTML, KML, KMZ, LOC, NMEA, SDF, TCX, TRK, TXT, USR, WPT, more! • Gerber converter: CNC, GBR, ISEL, PDF, more! • Subtitle converter: CSV, JSON, LRC, RT, SCC, SMI, SRT, SSA, STL, SUB, TTS, TXT, USF, VTT, XML, XSUBTITLE • Archives: compress 7Z, ARJ, TAR BZ2, CAB, EXE, KGB, LZH, RAR, RUN, SFX, SHAR, TAR, BZ2, TAR GZ, XZ, YZ1, ZIP • Web converter: HAR, HTML, MHTML, more! • Generate Hash: Adler32, HTPasswd, Blowfish, CRC32, DES, MD4, MD5, RIPE, SHA, Tiger, Whirlpool • Metadata: delete / view metadata • Scientific: NC, CDL • Repair: PDF, RAR, STL, ZIP, Audio, Video Examples: • Extract music from video • View hidden metadata • Convert Word to PDF • Video to animated GIF • Text to audio: listen to an ebook / audio book (text to speech, tts) • PDF to Word file to edit • Raster image to vector • Camera RAW file to image • Extract text from image with OCR • Create ringtones and cut audio • XPS to PDF or XLS to PDF • Website URL to image or ebook Some optional settings: • Video conversion: codec, rotate, stabilize, etc • Audio conversion: bitrate, frequency, trim, etc • Ebook conversion: metadata, e-book reader: Amazon Kindle, Sony, Apple iPad, Kobo, Nook, tablet, etc • Images conversion: size, filters, dpi, etc • Documents conversion: OCR (text recognition), etc • CAD drawing: color, scale, margin, etc More! Notes: • Offline conversion is supported for Audio and Video. • We can't convert: password protected files (secured pdf, encrypted) and DRM protected files. • Files get uploaded SECURELY and will be DELETED immediately after the conversion is done or failed. We don't keep any copies or logs!

About

Lens Smudge Detection

Features
Read full description

This app can detect images taken with dirt or foreign objects on the lens. Dirt refers to anything covering the lens, such as fingerprints or raindrops, which can cause blurring or haze in images. This feature helps you find the best frames from a set of videos or images. The Lens Smudge Detection results display a confidence score from 0.0 to 1.0. This indicates the likelihood that there was dirt or a malfunction on the lens at the time of shooting. A confidence score of 1.0 means there is a very high probability that dirt or foreign objects were on the lens at the time of shooting. Running the app requires a device with A14 Bionic chips(iPhone 12) and later.

Screenshots

File Converter4 screens
Lens Smudge Detection1 screens

Verdict

The call

The clearest difference is in-app purchases: Lens Smudge Detection at none against File Converter's 10. Lens Smudge Detection also leads on update cadence (weekly vs every 3 months). File Converter's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 26.5). On price and ads 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. File Converter sells 9 in-app purchases, starting at $1.49 per 7 days. Lens Smudge Detection asks for nothing beyond the download.

UpkeepUpdate frequency

File Converter ships an update every 3 months, Lens Smudge Detection weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard4 real differences · 6 level
File Converter versus Lens Smudge Detection: the parameters behind the verdict, then further details
ParameterFile ConverterLens Smudge Detection
PriceFreeFree
Rating3.8 (480 ratings) — better—
Positive reviews47.0% of reviews—
Number of ratings480 — better—
Update frequencyEvery 3 monthsWeekly — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better26.5
Further details — not scored
Size83 MB42 MB
Age rating4+4+
DeveloperIce Cold AppsHideaki Uchikoshi

Bugs and requests

File Converter

Reported bugs

4 issues
  • Conversion errors
  • Saved files disappearing
  • Incompatibility with newer iOS versions
  • Ad/video button not working

Requested features

4 requests
  • Increase file size limit
  • Add more file format support
  • Improve sharing/saving options
  • Fix ad/video button

Lens Smudge Detection

Not enough reviews yet to summarise bugs or requests.

In-app purchases

9 purchases

File Converter

Subscriptions9
  • Full Access$1.497 Days
  • Full Access$1.997 Days
  • Full Access2 variants$2.491 Month
Show 6 more
  • Full Access$3.991 Month
  • Full Access$4.991 Month
  • Full Access$30.991 Year
  • Full Access3 Days trial$38.991 Year
  • Full Access$39.991 Year
  • Full Access$49.991 Year
None

Lens Smudge Detection

No in-app purchases

Questions

Is File Converter free?
File Converter is free to download, with in-app purchases available.
Is Lens Smudge Detection free?
Lens Smudge Detection is free to download, with no in-app purchases.
Do File Converter or Lens Smudge Detection have ads?
Both File Converter and Lens Smudge Detection show ads.
Which is updated more often, File Converter or Lens Smudge Detection?
File Converter ships an update every 3 months, and Lens Smudge Detection weekly. Most recently, File Converter was updated on November 6, 2026 and Lens Smudge Detection on October 31, 2026.

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