Comparison

multiple operation calculator vs Stopwatch Library

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

Head to head

multiple operation calculator

About

multiple operation calculator

Features

Read full description

A calculator that calculates and displays four arithmetic operations and free time at the same time.

About

Stopwatch Library

Read full description

複数のストップウォッチを表示させることができます。アナログかデジタルかは選んでください。

Screenshots

multiple operation calculator1 screens

Stopwatch Library4 screens

Verdict

The call

The clearest difference is in-app purchases: multiple operation calculator at none against Stopwatch Library's 1. multiple operation calculator also leads on iOS requirement (15.8.3 vs 17.0). Stopwatch Library's advantage is ads (none vs shown) and update cadence (every 3 days vs every 2 weeks). On price 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. Stopwatch Library sells 1 one-off in-app purchase. multiple operation calculator asks for nothing beyond the download.

UpkeepUpdate frequency

multiple operation calculator ships an update every 2 weeks, Stopwatch Library every 3 days. The most recent releases landed on October 2, 2026 and September 28, 2026 respectively.

Scorecard4 real differences · 2 level

multiple operation calculator versus Stopwatch Library: the parameters behind the verdict, then further details
Parameter	multiple operation calculator	Stopwatch Library
Price	Free	Free
Update frequency	Every 2 weeks	Every 3 days — better
Ads	Yes	No — better
In-app purchases	No — better	Yes
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	15.8.3 — better	17.0
Further details — not scored
Size	35 MB	5 MB
Age rating	4+	4+
Developer	Hideaki Uchikoshi	Naoyuki Hasegawa

In-app purchases

None

multiple operation calculator

No in-app purchases

1 purchases

Stopwatch Library

One-time1

広告を削除$2.99

Questions

Is multiple operation calculator free?

multiple operation calculator is free to download, with no in-app purchases.

Is Stopwatch Library free?

Stopwatch Library is free to download, with in-app purchases available.

Do multiple operation calculator or Stopwatch Library have ads?

multiple operation calculator shows ads; Stopwatch Library does not.

Which is updated more often, multiple operation calculator or Stopwatch Library?

multiple operation calculator ships an update every 2 weeks, and Stopwatch Library every 3 days. Most recently, multiple operation calculator was updated on October 2, 2026 and Stopwatch Library on September 28, 2026.