Comparison

Perfect OCR vs Dual

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

Head to head
About

Perfect OCR

Scan and convert documents into editable text with high accuracy. This app offers advanced image processing for clear scans, supports multiple languages for OCR, and allows easy sharing of documents as PDFs or text files. All processing is done offline for enhanced privacy.

Highlights
  • High-accuracy OCR for documents
  • Advanced image processing for clear scans
  • Email documents as PDF with text or image
  • Offline processing for data privacy
  • Multi-language OCR support
  • Automatic document edge detection
  • SureScan mode for jitter-free images
Features
Read full description

Perfect OCR gives you both a general purpose OCR app and a document scanner. Now you can scan and OCR your letter-size or A4 documents with an accuracy of 90% or more, edit, copy and store the recognized text, and e-mail your documents as PDF files with text, SINGLE page image, or both together! NOTE: To ensure the advertised results it is important that you follow the OCR TIPS below (or in the app's help). Perfect OCR scans your documents using advanced image-processing algorithms to eliminate uneven lighting and shadows and improve contrast. The result is the clearest and most readable scans possible from the iPhone's camera. Perfect OCR also offers SureScan, our proprietary scanning mode that delivers sharper images with less jitter or smear. Our unique "Email to myself" feature lets you send documents to a predefined address, or even upload them to an online storage service like Evernote or Box.net, with a single tap. Uploading documents to online services via email is fast, secure, and can be done even if you're temporarily off line. Refer to app help for details. All processing happens on your iPhone, and the confidentiality of your data is never compromised. There is also no subscription fee, and no Internet access is needed to scan documents or run OCR. PERFECT OCR FEATURES: • Letter-size or A4 page OCR with accuracy of 95% for model 3GS, 98% for iPhone 4, and up to 90% for 3G • OCR languages: English, French, Spanish, German, Dutch, Italian, Portuguese, Swedish, Russian, Polish, Hungarian, Czech and Ukrainian. • Email multipage PDFs with text, SINGLE page image, or both • Automatic document edge detection and perspective correction • Multipage text recognition with accuracy indicator • Text editing and copy-to-clipboard operations • Built-in OCR text archive with file sharing via iTunes • "Email to myself" feature • Email text and image files (.TXT + .JPG), or save image to library • Searchable PDFs with document images (single page) • Preserves simple text formatting • Option to auto-remove line breaks • SureScan mode for jitter-free scans • Simple yet powerful user interface • Instant brightness, rotation, and color controls • Compact attachments with adjustable size IMPORTANT TIPS FOR OCR: • Make sure your document is flat and well lit. Hold your iPhone still while shooting. • Always scan documents using "SureScan 3x" mode. • Glossy paper may not work well (avoid glare). • When scanning books keep the pages as flat as possible and your iPhone parallel to the surface. • Perfect OCR cannot recognize handwritten, very large text or spreadsheets correctly. • Make sure to select the right language for OCR in app settings. We're constantly improving Perfect OCR, and we value our customers' opinions and feedback. Please contact us at support@turboscanapp.com. If you have a problem with our software, please contact us before submitting a comment to the app store. We can solve most of the problems, but we cannot respond to comments.

About

Dual

This innovative web browser enables true multitasking by supporting up to four concurrent web pages. Seamlessly switch between tasks like watching videos while composing emails or browsing social media while searching. Maximize your productivity with its flexible layout options and ad-blocking capabilities.

Highlights
  • Up to 4 concurrent web views
  • Horizontal and vertical dual web views
  • Switch page layouts with a single tap
  • Supports up to 6 sessions
  • Ad block included
  • Private browsing with bio-authentication
  • Capture screen area or whole web page as image
Features
Read full description

A true multitasking web browser which supports upto 4 concurrent web pages. You can do following concurrent tasks with this amazing app. - Watch youtube video while composing email. - Browse facebook pages while searching keyword in Google. - Read CNN news while watching shopping in Amazon. - And many other concurrent tasks! Enjoy the maximum productivity with this innovative web browser. • Horizontal dual web view. • Vertical dual web view. • Supports upto 4 concurrent web views. • Switch page layouts with single tap. • Supports up to 6 sessions. • Supports ad block • History, favorite pages and most visited pages. • Choose your favorite search englie - Google, Bing, Yahoo, Yandex, Baidu, ... • Private web browsing using Bio Authentication. • Capture current screen area as image. • Capture whole web page into images.

Screenshots

Perfect OCR4 screens
Dual4 screens

Verdict

The call

The clearest difference is rating: Perfect OCR at 4.7 against Dual's 4.5. Perfect OCR also leads on price ($0.99 vs $4.99) and ratings volume (118 vs 11). Dual's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 16). On review sentiment, ads, in-app purchases and monetization model 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

Perfect OCR costs $0.99 and Dual $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Perfect OCR holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Perfect OCR has 118 ratings behind it against 11, so its average is the more settled of the two. Written reviews point the same way: 65% of Perfect OCR's written reviews are positive against 60% of Dual's.

UpkeepUpdate frequency

Perfect OCR ships an update every 2 months, Dual every 3 weeks. The most recent releases landed on November 10, 2026 and November 11, 2026 respectively.

Scorecard5 real differences · 5 level
Perfect OCR versus Dual: the parameters behind the verdict, then further details
ParameterPerfect OCRDual
Price$0.99 — better$4.99
Rating4.7 (118 ratings) — better4.5 (11 ratings)
Positive reviews64.5% of reviews — better60.0% of reviews
Number of ratings118 — better11
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS1613.0 — better
Further details — not scored
Size25 MB8 MB
Age rating4+17+
DeveloperPiksoft Inc.Dongwook Cho

Customer experience

Perfect OCR

All ratings118 ratings
Positive94.9%
Neutral2.5%
Negative2.5%
Written reviews409 reviews
Positive64.5%
Neutral8.1%
Negative27.4%

Dual

All ratings12 ratings
Positive91.7%
Neutral0.0%
Negative8.3%
Written reviews15 reviews
Positive60.0%
Neutral6.7%
Negative33.3%

Bugs and requests

Perfect OCR

Reported bugs

3 issues
  • Crashes on iOS 4 devices
  • Issues with image capture and orientation
  • Inconsistent OCR performance

Requested features

5 requests
  • Support for more languages
  • Improved OCR accuracy
  • Ability to process multiple pages at once
  • Integration with cloud storage and productivity apps
  • Spell check and editing tools

Dual

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Perfect OCR

No in-app purchases

None

Dual

No in-app purchases

Questions

Is Perfect OCR free?
Perfect OCR costs $0.99, with no in-app purchases.
Is Dual free?
Dual costs $4.99, with no in-app purchases.
Which has better reviews, Perfect OCR or Dual?
Perfect OCR is rated higher. Perfect OCR averages 4.7 out of 5 from 118 ratings, while Dual averages 4.5 from 11 ratings.
Do Perfect OCR or Dual have ads?
Neither Perfect OCR nor Dual shows ads.
Which is updated more often, Perfect OCR or Dual?
Perfect OCR ships an update every 2 months, and Dual every 3 weeks. Most recently, Perfect OCR was updated on November 10, 2026 and Dual on November 11, 2026.

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