Comparison

OMR vs PDF Grader PRO

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

Head to head
About

OMR

Features
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๋ฌธ์ œ์ง‘์— ๋‹ต์„ ์ ์„ ์ˆ˜ ์—†์„ ๋•Œ, OMR๋กœ ํ‘ธ์„ธ์š”. ๋„์„œ๊ด€์—์„œ ๋นŒ๋ฆฐ ์ฑ…, ํ•™์› ๊ณต์šฉ ๊ต์žฌ, ๋™์ƒ์—๊ฒŒ ๋ฌผ๋ ค์ค„ ๋ฌธ์ œ์ง‘. ๋‹ต์„ ์ ์œผ๋ฉด ์•ˆ ๋˜๋Š” ์ฑ…์€ ๋งŽ์€๋ฐ ๋งค๋ฒˆ ์ข…์ด์— ์˜ฎ๊ฒจ ์ ๊ณ  ์ •๋‹ต์ง€์™€ ํ•˜๋‚˜์”ฉ ๋Œ€์กฐํ•˜๊ธฐ๋Š” ๋ฒˆ๊ฑฐ๋กญ์Šต๋‹ˆ๋‹ค. OMR์€ ๊ทธ ๊ณผ์ •์„ ํ†ต์งธ๋กœ ์—†์•ฑ๋‹ˆ๋‹ค. โ–  ์ด๋ ‡๊ฒŒ ์‚ฌ์šฉํ•˜์„ธ์š” 1. ๋ฌธ์ œ ๋ฒ”์œ„๋ฅผ ์ •ํ•ด OMR ์‹œํŠธ๋ฅผ ๋งŒ๋“ญ๋‹ˆ๋‹ค 2. ๊ต์žฌ ๋’ค ์ •๋‹ต์ง€๋ฅผ ์นด๋ฉ”๋ผ๋กœ ์ดฌ์˜ํ•˜๋ฉด ์ •๋‹ต์ด ์ž๋™์œผ๋กœ ์ž…๋ ฅ๋ฉ๋‹ˆ๋‹ค 3. ๋‚ด๊ฐ€ ํ‘ผ ๋‹ต์„ ๋งˆํ‚นํ•˜๊ณ  ์ฑ„์  ๋ฒ„ํŠผ์„ ๋ˆ„๋ฅด๋ฉด ๋ โ–  ์ฃผ์š” ๊ธฐ๋Šฅ ยท ์ •๋‹ต์ง€ ์ž๋™ ์ธ์‹ โ€” ์ดฌ์˜ ํ•œ ๋ฒˆ์œผ๋กœ ์ •๋‹ต ์ž…๋ ฅ. ์•จ๋ฒ”์˜ ์ด๋ฏธ์ง€๋„ ๋ถˆ๋Ÿฌ์˜ฌ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค ยท ํ‘œ ํ˜•ํƒœ ์ •๋‹ต์ง€ ์ง€์› โ€” ๋ฌธํ•ญ ๋ฒˆํ˜ธ ์ค„๊ณผ ์ •๋‹ต ์ค„์ด ๋‚˜๋‰œ ๊ต์žฌยท๋ชจ์˜๊ณ ์‚ฌ ์ •๋‹ต์ง€๋„ ๊ทธ๋Œ€๋กœ ์ธ์‹ํ•ฉ๋‹ˆ๋‹ค ยท ์ฆ‰์‹œ ์ฑ„์  โ€” ์ ์ˆ˜์™€ ์ •๋‹ตยท์˜ค๋‹ต ๊ฐœ์ˆ˜๋ฅผ ๋ฐ”๋กœ ํ™•์ธ ยท ์˜ค๋‹ต ๋นจ๊ฐ„์ƒ‰ ํ‘œ์‹œ โ€” ๋ณต์Šตํ•  ๋ฌธ์ œ๋ฅผ ํ•œ๋ˆˆ์— ยท ํ’€์ด ํƒ€์ด๋จธ โ€” ์ „์ฒด ์†Œ์š” ์‹œ๊ฐ„๊ณผ ๋ฌธํ•ญ๋ณ„ ํ’€์ด ์‹œ๊ฐ„ ๊ธฐ๋ก ยท ์ž์œ ๋กœ์šด ๋ฒ”์œ„ ์„ค์ • โ€” ๋ฌธํ•ญ ์ˆ˜, ์„ ํƒ์ง€ ์ˆ˜๋ฅผ ์›ํ•˜๋Š” ๋Œ€๋กœ ยท OMR ํด๋” ์ •๋ฆฌ โ€” ๊ณผ๋ชฉยท๊ต์žฌ๋ณ„๋กœ ์‹œํŠธ๋ฅผ ๋ชจ์•„ ๊ด€๋ฆฌ โ–  ์ด๋Ÿฐ ์‹œํ—˜์— ์”๋‹ˆ๋‹ค ํ† ์ต, ํ† ํ”Œ, ํ…์Šค, ์ง€ํ…”ํ”„ ๋“ฑ ์–ดํ•™์‹œํ—˜ ์ˆ˜๋Šฅ, ๋ชจ์˜ํ‰๊ฐ€, ๋‚ด์‹  ๋Œ€๋น„ ๋ฌธ์ œ์ง‘ ๊ณต๋ฌด์›, ์ž๊ฒฉ์ฆ, ํŽธ์ž…, ๊ฒ€์ •๊ณ ์‹œ ๊ธฐ์ถœ๋ฌธ์ œ โ–  ์ด๋Ÿฐ ๋ถ„๋“ค์ด ์”๋‹ˆ๋‹ค ยท ๋„์„œ๊ด€์ด๋‚˜ ํ•™๊ต์—์„œ ๋นŒ๋ฆฐ ๋ฌธ์ œ์ง‘์„ ํ‘ธ๋Š” ํ•™์ƒ ยท ๊ฐ™์€ ๋ฌธ์ œ์ง‘์„ ์—ฌ๋Ÿฌ ๋ฒˆ ๋ฐ˜๋ณตํ•ด์„œ ํ‘ธ๋Š” ์ˆ˜ํ—˜์ƒ ยท ์ข…์ด OMR ๋งˆํ‚น ์—ฐ์Šต์ด ํ•„์š”ํ•œ ์ˆ˜๋Šฅ ์ค€๋น„์ƒ ยท ์ฑ„์  ์‹œ๊ฐ„์„ ์ค„์ด๊ณ  ์˜ค๋‹ต ์ •๋ฆฌ์— ์ง‘์ค‘ํ•˜๊ณ  ์‹ถ์€ ๋ชจ๋“  ๋ถ„ ์ธ์‹์ด ์ž˜ ๋˜์ง€ ์•Š์œผ๋ฉด ์•ฑ์—์„œ ๋ฐ”๋กœ ์ดฌ์˜๋ณธ์„ ๋ณด๋‚ด์ฃผ์„ธ์š”. ๋ณด๋‚ด์ฃผ์‹  ์ž๋ฃŒ๋Š” ์ธ์‹๋ฅ  ๊ฐœ์„ ์—๋งŒ ์‚ฌ์šฉ๋˜๋ฉฐ, ์ธ์‹์— ์‹คํŒจํ•œ ๊ฒฝ์šฐ ๋ฌด๋ฃŒ ์ธ์‹ ํšŸ์ˆ˜๋Š” ์ฐจ๊ฐ๋˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค.

About

PDF Grader PRO

Features
Read full description

PDF Grader Pro brings PDF grading, handwritten feedback, rubrics, and result export into one focused workspace for teachers and educators. Create reusable grading templates, import student answer sheets, and move through each paper without switching between multiple apps. Grade by student or by question, apply checklist-based rubrics and partial credit, then export annotated papers and structured score files. GRADE PDFs YOUR WAY โ€ข Import PDF exam papers and student answer sheets โ€ข Grade by student or move through the same question across every student โ€ข Define answer areas, point values, rubrics, and reusable checklist items โ€ข Add partial credit and adjust scores while reviewing each response โ€ข Reuse saved templates for future grading sessions โ€ข Add more student answer sheets to an existing grading project HANDWRITTEN FEEDBACK โ€ข Write directly on PDFs with Apple Pencil or touch โ€ข Use pens, highlighters, erasers, lasso selection, and reusable stamps โ€ข Add text comments, images, and model-answer annotations โ€ข Keep handwriting and grading marks in exported student PDFs OPTIONAL AI-ASSISTED WORKFLOWS โ€ข Analyze an exam PDF to draft question structure and answer areas โ€ข Generate editable rubric and model-answer drafts from your references โ€ข Grade selected answers against your rubric and review suggested feedback โ€ข Inspect and edit AI-generated results before applying them AI features are optional and require a Google AI API key entered by the user. AI-generated content may be incomplete or incorrect; the teacher remains responsible for reviewing scores, feedback, and final academic decisions. EXPORT AND BACKUP โ€ข Export score reports to Excel or CSV โ€ข Save annotated PDFs or split them into individual student files โ€ข Package student PDFs together as a ZIP archive โ€ข Export portable .pdfgp project files containing the PDF, grading data, and ink โ€ข Export reusable grading templates as JSON ORGANIZED FOR REPEATED USE โ€ข Keep active and completed grading sessions in a visual library โ€ข Separate grading sessions from reusable templates โ€ข Automatically save work and reopen projects later โ€ข Choose student-by-student or question-by-question workflows PRIVACY AND EXTERNAL PROCESSING Projects and grading results are stored on your device by default. PDF Grader Pro does not upload grading PDFs or student data to its own server. When you choose to use an AI feature, selected answer or PDF images, grading criteria, model answers, teacher feedback, exam information, and related template data may be sent directly to Google AI services using your API key. Processing and retention then follow Googleโ€™s applicable terms, settings, and privacy policy. Turn off AI features to use manual grading, annotation, export, and library storage without external AI requests. Third-party advertising services may process device and usage information according to your consent choices, device settings, and the appโ€™s Privacy Policy. Before processing student materials, make sure you have the required permission and remove unnecessary personal, sensitive, or confidential information. Do not send such information through free AI services. PDF Grader Pro is built to support professional judgment, not replace it. Always review grading results before sharing them with students. Support: chani6361@gmail.com

Screenshots

OMR4 screens
PDF Grader PRO4 screens

Verdict

The call

The clearest difference is price: OMR at Free against PDF Grader PRO's $4.99. OMR also leads on ads (none vs shown). PDF Grader PRO's advantage is in-app purchases (none vs 1) and update cadence (every 3 days vs every 5 weeks). On device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

OMR is free to download; PDF Grader PRO costs $4.99 up front. OMR sells 1 one-off in-app purchase. PDF Grader PRO asks for nothing beyond the download.

UpkeepUpdate frequency

OMR ships an update every 5 weeks, PDF Grader PRO every 3 days. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

Scorecard4 real differences ยท 2 level
OMR versus PDF Grader PRO: the parameters behind the verdict, then further details
ParameterOMRPDF Grader PRO
PriceFree โ€” better$4.99
Update frequencyEvery 5 weeksEvery 3 days โ€” better
AdsNo โ€” betterYes
In-app purchasesYesNo โ€” better
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.617.6
Further details โ€” not scored
Size2 MB12 MB
Age rating4+4+
DeveloperYungUi LeeHyeonchan Yu

In-app purchases

1 purchases

OMR

One-time1
  • OCR Premium$1.99
None

PDF Grader PRO

No in-app purchases

Questions

Is OMR free?
OMR is free to download, with in-app purchases available.
Is PDF Grader PRO free?
PDF Grader PRO costs $4.99, with no in-app purchases.
Do OMR or PDF Grader PRO have ads?
PDF Grader PRO shows ads; OMR does not.
Which is updated more often, OMR or PDF Grader PRO?
OMR ships an update every 5 weeks, and PDF Grader PRO every 3 days. Most recently, OMR was updated on October 12, 2026 and PDF Grader PRO on October 7, 2026.

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