Comparison

GRE Math Knight vs Joint Compass

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

Head to head
About

GRE Math Knight

Practice GRE math concepts by battling monsters. This game covers arithmetic, algebra, geometry, and data analysis, with formula scrolls and mini-games to enhance learning. Become a GRE math knight and save the kingdom.

Highlights
  • GRE math concept practice
  • Arithmetic, algebra, geometry, data analysis
  • Formula scrolls
  • Mini-games
  • Monster battling gameplay
Features
Read full description

Our kingdom is held hostage by evil monsters whose only weakness is GRE math! Free to start: play the Swamp and Training free, then unlock the Desert, Plains and Tundra with a one-time purchase. No subscription, no ads. In GRE Math Knight, you'll hone your math skills by practicing the most commonly tested GRE math concepts. First, build your skills on the training ground, where you can drill the basics like mental math, fractions, percents, and more, then travel to four different biomes to solve arithmetic, algebra, geometry, and data analysis GRE math questions in order to defeat the monsters. You'll find scrolls with math formulas along the way to aid you in your quest, and fun games to play to break up your studying. Can you save the kingdom and become a true GRE math knight?

About

Joint Compass

Features
Read full description

Joint Compass is an independent military preparation and reference platform covering all six branches of the U.S. Armed Forces. Prepare for the ASVAB, AFOQT, OAR, and ASTB with 20,000+ practice questions, 17,500+ study cards and diagrams, and 175+ guides. Explore branch-specific Resources, Ranks, Culture, Questions, Pathways, Overview, Workflow, and Readiness information. Joint Compass also provides MEPS and waiver preparation support, study planning, assessments, practice testing, and local offline study tools. Choose your branch, role, exam, and study area to create a focused preparation experience. Learner progress is stored locally. No account is required, and core study material is available without creating an online profile. Joint Compass is independently owned commercial software. It is not sponsored, endorsed, or operated by the U.S. Department of Defense or any branch of the U.S. military.

Screenshots

GRE Math Knight4 screens
Joint Compass4 screens

Verdict

The call

The clearest difference is price: GRE Math Knight at Free against Joint Compass's $1.49. GRE Math Knight also leads on update cadence (monthly vs every 4 months). On ads, in-app purchases, device support and iOS requirement 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

GRE Math Knight is free to download; Joint Compass costs $1.49 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

GRE Math Knight ships an update monthly, Joint Compass every 4 months. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
GRE Math Knight versus Joint Compass: the parameters behind the verdict, then further details
ParameterGRE Math KnightJoint Compass
PriceFree — better$1.49
Rating4.5 (52 ratings) — better—
Positive reviews53.3% of reviews—
Number of ratings52 — better—
Update frequencyMonthly — betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS15.015.0
Further details — not scored
Size133 MB559 MB
Age rating9+12+
DeveloperVince Kotchian Test PrepSteady Flow

In-app purchases

None

GRE Math Knight

No in-app purchases

None

Joint Compass

No in-app purchases

Questions

Is GRE Math Knight free?
GRE Math Knight is free to download, with no in-app purchases.
Is Joint Compass free?
Joint Compass costs $1.49, with no in-app purchases.
Do GRE Math Knight or Joint Compass have ads?
Neither GRE Math Knight nor Joint Compass shows ads.
Which is updated more often, GRE Math Knight or Joint Compass?
GRE Math Knight ships an update monthly, and Joint Compass every 4 months. Most recently, GRE Math Knight was updated on October 25, 2026 and Joint Compass on October 31, 2026.

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