Comparison

Math Machine vs Time Zone Swap

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

Head to head

Math Machine

Real-World Math Quiz Levels

World Time Quiz

About

Math Machine

Features

Read full description

Math Machine is a level-based quiz app to practice real-world math and physics-style problems.

About

Time Zone Swap

Features

Read full description

Time Zone Swap helps you quickly understand world time differences through interactive quiz rounds. Practice converting from London time to major cities across multiple UTC ranges, including half-hour and quarter-hour offsets. Each question includes instant feedback and a short explanation so you learn while playing. Ideal for travelers, students, remote workers, and anyone who works across global time zones.

Screenshots

Math Machine4 screens

Time Zone Swap4 screens

Verdict

The call

The clearest difference is update cadence: Math Machine at every 2 days against Time Zone Swap's every 3 weeks. Math Machine also leads on iOS requirement (13.0 vs 15.0). On price, 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Math Machine ships an update every 2 days, Time Zone Swap every 3 weeks. The most recent releases landed on October 4, 2026 and October 18, 2026 respectively.

Scorecard2 real differences · 4 level

Math Machine versus Time Zone Swap: the parameters behind the verdict, then further details
Parameter	Math Machine	Time Zone Swap
Price	Free	Free
Update frequency	Every 2 days — better	Every 3 weeks
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	13.0 — better	15.0
Further details — not scored
Size	29 MB	22 MB
Age rating	4+	4+
Developer	Viet Anh Bui	Thi Ngan Ha Pham

In-app purchases

None

Math Machine

No in-app purchases

None

Time Zone Swap

No in-app purchases

Questions

Is Math Machine free?

Math Machine is free to download, with no in-app purchases.

Is Time Zone Swap free?

Time Zone Swap is free to download, with no in-app purchases.

Do Math Machine or Time Zone Swap have ads?

Neither Math Machine nor Time Zone Swap shows ads.

Which is updated more often, Math Machine or Time Zone Swap?

Math Machine ships an update every 2 days, and Time Zone Swap every 3 weeks. Most recently, Math Machine was updated on October 4, 2026 and Time Zone Swap on October 18, 2026.