Comparison

Grade Corner vs CubTutor

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

Head to head
About

Grade Corner

Access your academic performance on the go. View grades, assignments, schedules, and attendance. Communicate with teachers and track your progress throughout the school year.

Highlights
  • Check grades and class categories
  • View upcoming assignments and due dates
  • Track attendance records
  • Email teachers directly
  • Filter assignments by category
  • View past grades
  • Supports multiple students
Features
Read full description

Grade Corner is the fastest way for students and parents to check grades, schedules, assignments, and attendance as part of your daily routine without logging in every time. Compatible with Aspen, Infinite Campus (beta), and PowerSchool (beta). This app is an independent tool students may use to calculate and track their own grades. === GRADE CORNER PREMIUM We are committed to providing every student full access to their grades without advertisements. We offer the following additional functionality to support the ongoing development of the app: - Grade Calculator — see your true percentage including missing assignments - Add hypothetical future assignments to see how they'd affect your grade - Edit current assignments to plan makeup work Important: The Grade Calculator is for estimation only and does not guarantee your final score. === PRIVACY & ENDORSEMENTS Grade Corner is a member of the Student Data Privacy Consortium (SDPC) and is available for schools to endorse in Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. === SUPPORTED SCHOOL DISTRICTS - School districts using Aspen Student Information System (SIS) - School districts using Infinite Campus - School districts using PowerSchool Grade Corner is an independent application and is not affiliated with, associated with, authorized by, endorsed by, or in any way officially connected with Follett School Solutions (Aspen Student Information System), Infinite Campus, Inc., PowerSchool Group LLC, or any school district using those systems, unless explicitly stated. === COMMON QUESTIONS Q: Do I need an existing account with my school's grading system? A: Yes. Grade Corner is a companion app — it uses your existing gradebook credentials. If you don't know yours, ask your school administrator. Q: How often are grades updated? A: As soon as teachers post them. When they update grades in the gradebook, you'll see the changes on your next refresh. Q: Is this app officially supported by my school district? A: Sometimes. Grade Corner was built independently by a parent with two kids in DC Public Schools. We're working on more official endorsements — the current list lives on our website. === DISCLAIMERS Grade Corner is not affiliated, associated, authorized, endorsed by, or in any way officially connected with Follett School Solutions (Aspen Student Information System), Infinite Campus, Inc., PowerSchool Group LLC, or any of the school districts listed above, unless otherwise stated. Aspen is a trademark of Follett School Solutions. Infinite Campus is a trademark of Infinite Campus, Inc. PowerSchool is a trademark of PowerSchool Group LLC. All trademarks are the property of their respective owners. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

CubTutor

Features
Read full description

The fight over screen time doesn't have to be a fight. CubTutor doesn't take the phone away. It puts a few questions in front of it. Your child opens the app they were going to open anyway — it pauses, asks a couple of questions, and play continues once they answer. The practice happens because the phone asked, not because you did. Nothing to negotiate. Nobody to nag. The rule is simply there, every day, and it does not need you standing over it. WHAT CHANGES AT HOME - You stop being the one who says no - Practice still happens on the days you are busy, tired, or not there - Screen time still happens too — your child earns it a few minutes at a time - No confiscated phones, no timers for you to police, no bargaining at bedtime YOU SET THE TERMS - Which apps pause, and which are left alone - How many questions unlock play, and how long the reward lasts - A day off whenever you want one — it switches back on by itself - Pause everything, or lift it, from your own phone, wherever you are WHAT YOU SEE - What your child has been practising, by subject and topic - Which questions they got wrong, so you know what is actually hard - How the week has gone SUBJECTS Math from kindergarten through grade 12, including Pre-Algebra, Algebra 1, Geometry, Algebra 2, Pre-Calculus, Calculus and SAT Math Prep. English, science and social studies for grades K-8. Questions match your child's grade, and you can change it any time. IF YOUR CHILD HAS A TUTOR Optional, and most families do not. If they do, and their tutor uses CubTutor, the questions become the ones that tutor set — the exact things they worked on this week — and the tutor sees which ones were missed. Everything above works the same either way. WHAT IS FREE, AND WHAT IS NOT Grade-level math is free for every child, for as long as you like. A Practice subscription unlocks English, science and social studies, the advanced math tracks, and shorter gaps between quiz breaks — for one child, two kids, or three or more, billed yearly through your Apple ID. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel any time in your Apple ID settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://cubtutor.com/privacy.html

Screenshots

Grade Corner4 screens
CubTutor4 screens

Verdict

The call

The clearest difference is in-app purchases: CubTutor at none against Grade Corner's 4. On price, update cadence, ads 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. Grade Corner sells 4 in-app purchases, starting at $3.99 per month. CubTutor asks for nothing beyond the download.

UpkeepUpdate frequency

Grade Corner ships an update every 9 days, CubTutor every 2 weeks. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

Scorecard1 real difference · 9 level
Grade Corner versus CubTutor: the parameters behind the verdict, then further details
ParameterGrade CornerCubTutor
PriceFreeFree
Rating4.9 (28K ratings) — better—
Positive reviews81.4% of reviews—
Number of ratings28K — better—
Update frequencyEvery 9 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.416.0 — better
Further details — not scored
Size90 MB4 MB
Age rating4+4+
DeveloperLucky Dog Collective, LLCCubTutor

Bugs and requests

Grade Corner

Reported bugs

2 issues
  • Login screen freezes
  • No schedule information displayed

Requested features

4 requests
  • Grade notifications
  • Schedule view for future days
  • Ability to delete or rearrange classes
  • Integration with other platforms (e.g., Google Classroom)

CubTutor

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Grade Corner

Subscriptions4
  • Monthly Subscription7 Days trial$3.991 Month
  • Six Month Subscription7 Days trial$12.996 Months
  • Annual Subscription7 Days trial$19.991 Year
Show 1 more
  • Family Plan$29.991 Year
None

CubTutor

No in-app purchases

Questions

Is Grade Corner free?
Grade Corner is free to download, with in-app purchases available.
Is CubTutor free?
CubTutor is free to download, with no in-app purchases.
Do Grade Corner or CubTutor have ads?
Neither Grade Corner nor CubTutor shows ads.
Which is updated more often, Grade Corner or CubTutor?
Grade Corner ships an update every 9 days, and CubTutor every 2 weeks. Most recently, Grade Corner was updated on October 15, 2026 and CubTutor on October 4, 2026.

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