Comparison

ScanGrader vs Check Answer

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

Head to head
About

ScanGrader

Features
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ScanGrader is a complete solution for teachers to prepare and mark multiple choice tests using the device camera as a scanner. MAIN FEATURES ------------- ADVANCED IMAGE PROCESSING ScanGrader has developed an image-processing algorithm that consistently delivers precise results. COSTUMIZABLE ANSWER SHEETS Build personalized answer sheets directly from your iPhone or iPad, from 1 to 100 questions, with one or two answer sheets per page (in this case, you need to cut the page in half to distribute to students). You can define up to four labels, which will be printed on the answer sheets (name of school, name of class, teacher's name, data, etc.). You can also choose whether the answer sheets should contain a field for the students' signatures. VISUALIZE AND ANALYSE THE RESULT ScanGrader provides an Item Analysis tool, presenting, for each question, the difficulty level, the discriminant factor, and the frequency distribution of alternatives. You can see the results grouped by class, test, or students. All results can be seen using any of the groups: they are only grouped differently. If a test is applied to only one class, there is no difference if you choose to see the results by class or test. But if a test is applied to more than one class, choosing the class grouping will show the results for students in that class, while choosing the test grouping will show the results for all classes in which the test was applied. For class and test groupings, ScanGrader provides information and statistics about the grading: maximum points scored, minimum points scored, average points, standard deviation, median points, and others. EXPORT THE RESULTS You can export the results as a spreadsheet file in two formats: 1) Normal (ideal for importing the results of a test into your computer or on the school's server) 2) Complete (to use external tools for Item Analysis). REPORTS You can generate two types of reports as a PDF file: 1) Simple (a list of the students and their respective scores to post to the students) 2) Complete (a page for each student, containing a text with the student's choices for each question, the student's score, an image of the scanned answer sheet, and an image showing the result of the grading) TYPESET YOUT TEST To streamline the test preparation, keep the test's questions in a spreadsheet file (see the format required inside the app). Then, use the Typeset Questions tool to produce an elegant and professional PDF file to distribute to the students. You can typeset your test in one or two columns, and each question can also have an image, if necessary. You can also choose to set the key automatically for the test, with information kept in the spreadsheet file. SYNC BETWEEN DEVICES Sync students, tests, classes and results between your iOS devices using iCloud. SUBSCRIPTION Each time you use ScanGrader to grade a student answer sheet, that is counted as one 'grading'. Users without a subscription have access to all functionalities, but with a limit of 50 'gradings' per month (non-cumulative).  Users with an Annual Subscription (the only one available for ScanGrader) enjoy unlimited gradings throughout their subscription period. PRIVACY POLICY: https://www.scangrader.com/app/privacy TERMS OF USE: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Check Answer

Features
Read full description

Turn your smartphone into an intelligent OMR scanner! Tired of manually grading answer sheets one by one? With Check Answer, you can grade dozens of exams in just minutes. Powered by advanced image processing, it is designed to be the most efficient and user-friendly tool for teachers and educators. Key Features That Set Us Apart: - Flexible Answer Key Templates: Create your own custom answer sheets effortlessly—whether it’s 20, 50, or 100 questions. Use "Grid Mode" to place marking points in seconds. - Precision Crosshair: Achieve pixel-perfect accuracy. Our aiming system ensures clear visibility even under your fingertip, eliminating any placement errors. - Snap & Grade (Instant Grading): Simply take a photo of the answer sheet. The system easily corrects image angles (Perspective Warp) and calculates scores instantly, highlighting correct answers in green and errors in red on your screen. - Adjustable Sensitivity Control: Supports both pencils and pens. You can manually adjust the detection threshold to ensure maximum accuracy in any lighting condition. - Results & History Tracking: Save student names and scores organized by subject. Access exam history anytime to monitor student progress over time. - Export Data (Pro Feature): Pro members can export scores as CSV files, ready for use in Excel, Google Sheets, or any school grading system. Perfect For: - Teachers of all levels (Primary, Secondary, University) - Tutors and Test Prep Centers - Corporate training and assessments - Start for FREE! - Create up to 3 templates and use all core features at no cost. Upgrade to Pro for unlimited templates and to unlock the data export feature. Download Check Answer today and take back your valuable teaching time! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

ScanGrader4 screens
Check Answer4 screens

Verdict

The call

The clearest difference is update cadence: Check Answer at every 4 days against ScanGrader's every 6 weeks. ScanGrader's advantage is iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases 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. ScanGrader sells 1 in-app purchase, starting at $6.99 per year and Check Answer sells 4 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ScanGrader ships an update every 6 weeks, Check Answer every 4 days. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.

Scorecard2 real differences · 4 level
ScanGrader versus Check Answer: the parameters behind the verdict, then further details
ParameterScanGraderCheck Answer
PriceFreeFree
Update frequencyEvery 6 weeksEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better18.6
Further details — not scored
Size6 MB3 MB
Age rating4+4+
DeveloperZanido Software Ltda.Jatuphol Jaturapat

In-app purchases

1 purchases

ScanGrader

Subscriptions1
  • Annual Subscription$6.991 Year
4 purchases

Check Answer

Subscriptions3
  • Unlimited use (1 Month)1 Month trial$0.991 Month
  • Unlimited Use (3 Months)$2.993 Months
  • Unlimited Use (1 Year)$4.991 Year
One-time1
  • Lifetime Access$12.99

Questions

Is ScanGrader free?
ScanGrader is free to download, with in-app purchases available.
Is Check Answer free?
Check Answer is free to download, with in-app purchases available.
Do ScanGrader or Check Answer have ads?
Neither ScanGrader nor Check Answer shows ads.
Which is updated more often, ScanGrader or Check Answer?
ScanGrader ships an update every 6 weeks, and Check Answer every 4 days. Most recently, ScanGrader was updated on September 24, 2026 and Check Answer on September 19, 2026.

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