Comparison

関数電卓 vs Mini Focus Timer

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

Head to head

Minimal Pomodoro timer

Free

📊 Productivity

No ratingsView app →

About

関数電卓

Features

Read full description

Casio fx-991にインスパイアされた本格派の関数電卓アプリです。【特徴】 - 三角関数（sin・cos・tan・逆三角関数） - 対数（log・ln）・べき乗・平方根 - SHIFT機能で第2機能に切り替え - メモリ機能（M+・M-・MR） - DEG／RAD切り替え - 計算式と結果を同時表示 - 見やすいCasio風液晶ディスプレイ - 日本語・英語対応大学の授業・理工系の仕事・日常の計算まで幅広く対応。

About

Mini Focus Timer

This minimalist timer uses the Pomodoro technique to help you focus for 25 minutes and then take a 5-minute break. It features a simple interface with a circular dial and a large start button, offering focus, short break, and long break phases. Track your progress with daily, weekly, and monthly charts.

Highlights

Minimalist Pomodoro timer
Focus, short break, long break phases
Circular glass dial interface
Home & lock screen widgets
Apple Watch complications
Daily, weekly, monthly focus charts

Features

Read full description

Focus 25, rest 5. That's it. MiniFocus is the simplest Pomodoro timer for iPhone, iPad, and Apple Watch — one glossy glass dial, one big start button, and a gentle ping when the phase ends. • Three phases only — focus, short break, long break • Big circular glass dial in the iOS 26 Liquid Glass tone • Home & lock screen widgets — running timer · today stats · quick start • Apple Watch complications — your remaining time, always one glance away • Universal — iPhone, iPad, and a paired Apple Watch app, all in one • Daily, weekly, monthly focus charts • No sign-up. No ads. No tracking. No IAP. No account, no cloud — everything lives on your device. The point isn't measuring time. It's not drifting away for 25 minutes.

Screenshots

関数電卓3 screens

Mini Focus Timer4 screens

Verdict

The call

The clearest difference is update cadence: Mini Focus Timer at daily against 関数電卓's monthly. 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

関数電卓 ships an update monthly, Mini Focus Timer daily. Both last shipped on September 21, 2026.

Scorecard1 real difference · 7 level

関数電卓 versus Mini Focus Timer: the parameters behind the verdict, then further details
Parameter	関数電卓	Mini Focus Timer
Price	Free	Free
Positive reviews	—	100.0% of reviews
Update frequency	Monthly	Daily — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad	iPhone, iPad, Apple Watch — better
Requires iOS	26.5	26.0 — better
Further details — not scored
Size	8 MB	3 MB
Age rating	4+	4+
Developer	Kouki Yoshimoto	Lim Sangjin

In-app purchases

None

関数電卓

No in-app purchases

None

Mini Focus Timer

No in-app purchases

Questions

Is 関数電卓 free?

関数電卓 is free to download, with no in-app purchases.

Is Mini Focus Timer free?

Mini Focus Timer is free to download, with no in-app purchases.

Do 関数電卓 or Mini Focus Timer have ads?

Neither 関数電卓 nor Mini Focus Timer shows ads.

Which is updated more often, 関数電卓 or Mini Focus Timer?

関数電卓 ships an update monthly, and Mini Focus Timer daily. Most recently, 関数電卓 was updated on September 21, 2026 and Mini Focus Timer on September 21, 2026.