Comparison

ScanGrader vs Student Guardian

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

Student Guardian

Features
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Student Guard helps busy parents stay organized by turning school emails into clear, actionable summaries. Connect your email, add trusted school sources, and let AI distill long newsletters, announcements, and district updates into concise insights—so you never miss a permission slip, a due date, or an important event again. How It Works Connect the email account where your school sends updates (Gmail or Outlook). Add trusted school sources such as teacher emails or district domains. Only messages from trusted sources are processed—your personal emails remain private. Assign roles to senders (District, Teacher, Main Teacher) to unlock enhanced organization. View summaries, events, and alerts in a unified dashboard. AI-Powered Summaries Clear, concise summaries of lengthy newsletters and announcements Automatic categorization (homework, grades, events, trips, payments) Highlighted action items and due dates Use Student Guard Cloud or your own API key Option to disable AI and view raw emails at any time Translation & Multi-Language Support Summaries available in 15 languages: English, Spanish, French, Chinese (Simplified & Traditional), Vietnamese, Korean, Arabic, Tagalog, Portuguese, Russian, Japanese, Hindi, German, and Italian Auto-detects your device language on first launch Ideal for multilingual households Re-summarize any email in any supported language Smart Email Organization Filters school emails based on your trusted source list Assign sender roles for tailored features: District: Grade alerts and assignment notifications Main Teacher: Weekly newsletter summaries on the dashboard Teacher/Staff: Grouped by sender type for easy organization Color-coded student profiles to keep multiple children organized Unified Calendar Automatically extracts events, assignments, and due dates from emails Import district calendars via ICS files View all school events and deadlines in one place Filter by individual student Dashboard Daily digest with today’s events and action items At-a-glance teacher newsletter summaries Quick overview of what requires attention Optional weather widget for planning school days Smart Notifications Alerts for new emails, upcoming events, and due dates Quiet Hours to prevent notifications during nighttime Daily Digest notification at a time you choose Multi-Provider Support Connect Gmail or Outlook email accounts Secure OAuth 2.0 authentication with PKCE Credentials are never stored Widgets Today’s Summary widget for fast access to important updates Upcoming Events widget for your Home Screen iCloud Sync Sync trusted sources, roles, and student profiles across your devices Your configuration follows you to your iPad Privacy First Emails stored locally on your device Only trusted-source emails are processed AI features are fully optional and under your control No ads. No trackers. No selling of data. Terms of Use: https://sites.google.com/view/andyapps/terms Privacy Policy: https://sites.google.com/view/andyapps/privacy

Screenshots

ScanGrader4 screens
Student Guardian4 screens

Verdict

The call

The clearest difference is update cadence: Student Guardian at fortnightly against ScanGrader's every 6 weeks. 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 Student Guardian sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

ScanGrader ships an update every 6 weeks, Student Guardian fortnightly. The most recent releases landed on November 7, 2026 and November 5, 2026 respectively.

Scorecard1 real difference · 5 level
ScanGrader versus Student Guardian: the parameters behind the verdict, then further details
ParameterScanGraderStudent Guardian
PriceFreeFree
Update frequencyEvery 6 weeksFortnightly — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size6 MB13 MB
Age rating4+4+
DeveloperZanido Software Ltda.Andy Arevalo

In-app purchases

1 purchases

ScanGrader

Subscriptions1
  • Annual Subscription$6.991 Year
2 purchases

Student Guardian

Subscriptions2
  • Premium Monthly$3.991 Month
  • Premium Yearly$29.991 Year

Questions

Is ScanGrader free?
ScanGrader is free to download, with in-app purchases available.
Is Student Guardian free?
Student Guardian is free to download, with in-app purchases available.
Do ScanGrader or Student Guardian have ads?
Neither ScanGrader nor Student Guardian shows ads.
Which is updated more often, ScanGrader or Student Guardian?
ScanGrader ships an update every 6 weeks, and Student Guardian fortnightly. Most recently, ScanGrader was updated on November 7, 2026 and Student Guardian on November 5, 2026.

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