Comparison

Trainor Apave vs Math Key

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

Head to head
About

Trainor Apave

Features
Read full description

With the Trainor app you can: - Take online courses or download them and complete them later - View your safety cards and log into facilities you have access to - Access all company-provided documents - Get access to a variety of useful tools for electricians - View and share your diplomas Log in with your Trainor account to keep training and documentation available wherever you are.

About

Math Key

Features
Read full description

Math Keyboard is a fast custom keyboard that lets you type mathematical notation in any app: Notes, Mail, Messages, Pages, homework apps and more. WHAT YOU GET - 300+ mathematical symbols organised into clear pages: basic operators, fractions, powers and indices, Greek letters, geometry, set theory, calculus and units - Fractions and superscripts that paste as real Unicode characters, so they look right everywhere - A starred page for your own custom keys: save the symbols and snippets you use most, reorder them by long-press, delete by swipe - Designed for students, teachers and anyone writing maths on iPhone or iPad - Covers the notation used in the Singapore PSLE syllabus, as well as secondary and university level maths PRIVACY FIRST This keyboard does not request Full Access. It never collects, uploads or records anything you type. Everything stays on your device. FIVE LANGUAGES Available in English, Simplified Chinese, Japanese, Korean and French. The keyboard follows your system language automatically. HOW TO ENABLE Open Settings, then General, then Keyboard, then Keyboards. Tap Add New Keyboard and choose Math Keyboard. Then long-press the globe key in any text field to switch to it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Also: https://mathkeyboard.1stshop.sg/terms.html Privacy Policy: https://mathkeyboard.1stshop.sg/privacy.html

Screenshots

Trainor Apave4 screens
Math Key4 screens

Verdict

The call

The clearest difference is price: Trainor Apave at Free against Math Key's $1.99. Trainor Apave also leads on iOS requirement (15.5 vs 17.0). On update cadence, 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

Trainor Apave is free to download; Math Key costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 22, 2026 and October 28, 2026 respectively.

Scorecard2 real differences · 4 level
Trainor Apave versus Math Key: the parameters behind the verdict, then further details
ParameterTrainor ApaveMath Key
PriceFree — better$1.99
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.5 — better17.0
Further details — not scored
Size41 MB1 MB
Age rating4+4+
DeveloperTrainor1STGROUP PRIVATE LIMITED

In-app purchases

None

Trainor Apave

No in-app purchases

None

Math Key

No in-app purchases

Questions

Is Trainor Apave free?
Trainor Apave is free to download, with no in-app purchases.
Is Math Key free?
Math Key costs $1.99, with no in-app purchases.
Do Trainor Apave or Math Key have ads?
Neither Trainor Apave nor Math Key shows ads.
Which is updated more often, Trainor Apave or Math Key?
Trainor Apave ships an update every 3 weeks, and Math Key every 3 weeks. Most recently, Trainor Apave was updated on October 22, 2026 and Math Key on October 28, 2026.

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