Comparison

GradeMaster for Teachers vs GradeKey

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

Head to head
About

GradeMaster for Teachers

Features
Read full description

GradeMaster for Teachers is a fast, simple, offline-friendly grade calculator designed to make grading quicker and less repetitive. Enter the total points, choose the number correct, and instantly see the percentage, letter grade, and a full Grade Chart showing every possible score. Designed specifically for mobile devices, GradeMaster focuses on speed, clarity, and ease of use - whether you're grading quizzes at your desk or checking assignments on your phone between classes. Features include: β€’ Instant percentage and letter grade calculation β€’ Full Grade Chart showing every possible score β€’ Fast score entry with direct input and + / βˆ’ controls β€’ Custom A–F grade scales β€’ Expand Chart mode for a larger grading view β€’ Portrait and landscape layouts β€’ Light mode, dark mode, and automatic system appearance β€’ Saved grading preferences and default point settings β€’ Multiple rounding options β€’ Offline-friendly performance β€’ No account required GradeMaster does not store student data. Your grading preferences are stored locally on your device, and grade calculations are not sent to GradeMaster or stored on an external server. Designed by a busy teacher for busy teachers who just want grading to be faster.

About

GradeKey

Features
Read full description

GradeKey turns any assignment's point value into a complete grade conversion table β€” instantly. Stop doing mental math at the grading table. Enter the total points once, and GradeKey generates every possible score, percentage, and letter grade in a single scrollable table. Built by a teacher, for teachers. INSTANT GRADE TABLES Type in the total points and GradeKey does the rest. Every row shows points off, points earned, the exact percentage, and the letter grade β€” color-coded so an A is green and an F is red at a glance. Choose your step size to match how you actually grade: β€’ Whole points β€” fast for quizzes β€’ Half points β€” the classroom standard β€’ Quarter points β€” for detailed rubrics FIND ANY SCORE IN SECONDS Three ways to look up a grade, and GradeKey jumps straight to the matching row and highlights it: β€’ Points Off β€” β€œthey lost 4 points, what's that?” β€’ Points Earned β€” β€œ36 out of 40 is what percent?” β€’ Grade % β€” β€œwhat do they need for an 85?” No scrolling, no scanning. Type a number, land on the answer. GRADING SCALES THAT MATCH YOUR SCHOOL Eight built-in presets, and GradeKey suggests the right one based on your region: β€’ US Standard (90/80/70/60) β€’ US Plus / Minus (A+, A, A-, B+ …) β€’ US Strict (93/83/73/63) β€’ Pass / Fail β€’ Canada β€’ UK / Europe β€’ Australia β€’ Latin America Or build your own. Rename any tier, add or delete tiers, set any percentage cutoff, and choose exactly where the passing line falls. Hide scales you do not use and arrange the picker in your preferred order. EXTRA CREDIT, HANDLED Add bonus points and GradeKey extends the table above 100%, marking those rows β€œEC” in purple. SAVE EVERY ASSESSMENT Store all your quizzes, exams, labs, and projects. Search them by name, drag to reorder, duplicate a setup, and group related work into folders. GRADEKEY PRO β€” ONE PURCHASE, FOREVER The free version saves one assessment with full access to the table, lookup, and every grading scale. Upgrade once to unlock: β€’ Unlimited saved assessments β€’ Export to PDF or CSV β€’ Folders for classes, periods, or terms β€’ Configurable Home Screen widgets for assessments and folders β€’ Every future feature One-time purchase. No subscription. No account. No ads. DESIGNED FOR TEACHERS β€’ iCloud sync is free for everyone β€’ Works on iPhone and iPad β€’ Full dark mode β€’ No sign-up, no login, no tracking β€’ Your data stays on your device and in your private iCloud Grading is hard enough. The math shouldn't be.

Screenshots

GradeMaster for Teachers4 screens
GradeKey4 screens

Verdict

The call

The clearest difference is in-app purchases: GradeMaster for Teachers at none against GradeKey's 1. GradeMaster for Teachers also leads on update cadence (weekly vs monthly) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. GradeKey sells 1 one-off in-app purchase. GradeMaster for Teachers asks for nothing beyond the download.

UpkeepUpdate frequency

GradeMaster for Teachers ships an update weekly, GradeKey monthly. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard3 real differences Β· 3 level
GradeMaster for Teachers versus GradeKey: the parameters behind the verdict, then further details
ParameterGradeMaster for TeachersGradeKey
PriceFreeFree
Update frequencyWeekly β€” betterMonthly
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.1 β€” better17.0
Further details β€” not scored
Size30 MB7 MB
Age rating4+4+
DeveloperDaniel WhiteHernan Rosario

In-app purchases

None

GradeMaster for Teachers

No in-app purchases

1 purchases

GradeKey

One-time1
  • GradeKey Pro$7.99

Questions

Is GradeMaster for Teachers free?
GradeMaster for Teachers is free to download, with no in-app purchases.
Is GradeKey free?
GradeKey is free to download, with in-app purchases available.
Do GradeMaster for Teachers or GradeKey have ads?
Neither GradeMaster for Teachers nor GradeKey shows ads.
Which is updated more often, GradeMaster for Teachers or GradeKey?
GradeMaster for Teachers ships an update weekly, and GradeKey monthly. Most recently, GradeMaster for Teachers was updated on October 24, 2026 and GradeKey on October 29, 2026.

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