Comparison

ClassTimer vs MEGA Subtraction 1

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

Head to head
About

ClassTimer

This app helps students develop essential time management skills with visual timers and customizable alerts. It supports various display formats and sounds to aid understanding and productivity in educational settings.

Highlights
  • Visual time display
  • Bar graph indicator for remaining time
  • Selectable buzzer sounds
  • Hours/minutes or minutes/seconds display
  • Start, stop, pause, and restart functions
  • Sound on/off control
Read full description

Our ClassTimer is designed to help teachers transform their classrooms into amazingly productive environments by assisting students with time management. ClassTimer helps students visualize time and understand it as fundamental concept that needs to be managed in order to be more productive. Good time management leads to success in school and work. In addition to the digital time display, ClassTimer includes a bar graph style display so that young children can visualize the time remaining for a particular task. Using ClassTimer children can better understand when the next phase of the school day will begin or when the time allotted for a task will end. Students at all levels can benefit from better time management skills. Whether they are taking a standardized test, working in a small group on a project or involved in a form of creative expression, they will be better able to succeed if they properly manage the available time. The ClassTimer makes it easy to visualize the passage of time. Several options increase its usefulness. Selectable buzzer sounds signal that the allotted time period has come to an end. Sound can be turned on or off. Usually classroom teachers will use the minutes and seconds display (MM:SS), but in some cases may want to switch to the hours and minutes display (HH:MM). ClassTimer Features ClassTimer has several useful features. In addtion to the very large display, a bar graph style indicator shows the remaining time as a percentage. Timer functions include a user selected audible sound effect to signal the end of a turn. Control Functions: • Activate or deactive the sound played when time is up. • Choose different audible signals by tapping the display. • Select between the hours and minutes display or the minutes and seconds display. • Tap the green arrow to start the countdown clock. • Tap stop to stop the timer. • Tap pause to pause the countdown. • Tap restart to reset the clock. • Slide the alarm sound control to either on or off. Works in stand-alone mode on an iPad or can be connected to a digital projector using an optional cable suppplied by Apple or wirelessly to Apple TV.

About

MEGA Subtraction 1

Features
Read full description

MEGA Subtraction 1-100 FREE makes developing strong math skills fun. Play games, win stars, collect stickers and put them in your treasure chest! ••• FEATURES • Learn subtraction easily • Kids friendly user interface • Beautiful and fun graphics • Win stars • Collect stickers • Column and row formatted questions • Game history statistics ••• FUN & EFFICIENT Parents can easily check on their child’s progress through the game history menu. See how many questions your little one has gotten correct and how many wrong. The app will analyze the errors and wins and gradually increase the difficulty of the problems. ••• FREE VERSION This is the free version of MEGA Subtraction 1-100. Some settings and prizes are locked. You can easily unlock all features via an in-app purchase.

Screenshots

MEGA Subtraction 14 screens

Verdict

The call

The clearest difference is price: MEGA Subtraction 1 at Free against ClassTimer's $1.99. MEGA Subtraction 1 also leads on update cadence (every 2 months vs every 14 months) and iOS requirement (6.0 vs 12.0). ClassTimer's advantage is in-app purchases (none vs 10). On 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

MEGA Subtraction 1 is free to download; ClassTimer costs $1.99 up front. MEGA Subtraction 1 sells 10 one-off in-app purchases. ClassTimer asks for nothing beyond the download.

UpkeepUpdate frequency

ClassTimer ships an update every 14 months, MEGA Subtraction 1 every 2 months. The most recent releases landed on October 16, 2026 and October 18, 2026 respectively.

Scorecard4 real differences · 6 level
ClassTimer versus MEGA Subtraction 1: the parameters behind the verdict, then further details
ParameterClassTimerMEGA Subtraction 1
Price$1.99Free — better
Rating2.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 14 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPad, Mac, Apple TViPhone, iPad, iPod
Requires iOS12.06.0 — better
Further details — not scored
Size19 MB42 MB
Age rating4+4+
DeveloperVentura Educational SystemsStas Gurevich

In-app purchases

None

ClassTimer

No in-app purchases

10 purchases

MEGA Subtraction 1

One-time10
  • Settings$0.99
  • History$0.99
  • Collection 1$0.99
Show 7 more
  • Collection 2$0.99
  • Collection 3$0.99
  • Collection 4$0.99
  • Collection 5$0.99
  • Collection 6$0.99
  • All collections$3.99
  • Mega Pack$4.99

Questions

Is ClassTimer free?
ClassTimer costs $1.99, with no in-app purchases.
Is MEGA Subtraction 1 free?
MEGA Subtraction 1 is free to download, with in-app purchases available.
Do ClassTimer or MEGA Subtraction 1 have ads?
Neither ClassTimer nor MEGA Subtraction 1 shows ads.
Which is updated more often, ClassTimer or MEGA Subtraction 1?
ClassTimer ships an update every 14 months, and MEGA Subtraction 1 every 2 months. Most recently, ClassTimer was updated on October 16, 2026 and MEGA Subtraction 1 on October 18, 2026.

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