Perfect OCR vs Diary Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
Diary Calendar
This calendar app supports the ICS standard for seamless integration with PC calendar software like Outlook and Lightning. It offers detailed date and monthly overviews, allows for time zone-specific appointments, and enables the creation of both one-off and recurring events.
- ICS standard compatibility
- Date and monthly overviews
- Time zone management
- Recurring event creation
- Searchable appointment list
- External data storage
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This app is suitable for calendars according to the ICS standard RFC 5545/5546, which is used by most computer programs. This is the prerequisite, so that you can also use your calendar from the PC with Outlook, Lighting or other software. This calendar inherits the following functions: - Date Overview All appointments are displayed time-dependent. The list can be searched. The list is kept on the iPhone and can be stored and loaded externally. Appointments can also be transferred from the iPhone - Monthly Overview Monthly overview helps navigate through calendar dates quickly. Appointments additional are listed separately. An overview of appointments of the day couldt be called up on the screen. - Date Appointments can include date and time or just the date. These can be stored with or without time zone. So, for example the date New Year should be used without time zone as the year actually begins on earth at different times. In contrast, a birthday with the time zone should be deposited, in which the jubilarian lives. Thus, at the time of congratulation nothing goes wrong. - Series date One-off and serial appointments can be generated. A recurring event is controlled by a rule by which the repetitive appointments are generated. These rules fulfill the standard. So you do not have to dive deeper into the rules, as most common rules could be created by key combination.
Screenshots
Verdict
The clearest difference is review sentiment: Perfect OCR at 65% against Diary Calendar's 33%. Perfect OCR also leads on price ($0.99 vs $2.99). Diary Calendar's advantage is iOS requirement (12.0 vs 16). On update cadence, 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
Perfect OCR costs $0.99 and Diary Calendar $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Perfect OCR ships an update every 2 months, Diary Calendar every 3 months. The most recent releases landed on September 30, 2026 and September 10, 2026 respectively.
| Parameter | Perfect OCR | Diary Calendar |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 4.7 (118 ratings) — better | — |
| Positive reviews | 64.5% of reviews — better | 33.3% of reviews |
| Number of ratings | 118 — better | — |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 16 | 12.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Piksoft Inc. | Hans Joachim Gerhardt |
Customer experience
Perfect OCR
Diary Calendar
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
Diary Calendar
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Perfect OCR
No in-app purchases
Diary Calendar
No in-app purchases
Questions
Is Perfect OCR free?
Is Diary Calendar free?
Do Perfect OCR or Diary Calendar have ads?
Which is updated more often, Perfect OCR or Diary Calendar?
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