Comparison

左(右) vs Simple Timer

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

Head to head
About

左(右)

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左右の判断がすぐに出来ない方の為のアプリです。 このアプリがあれば、左と言われた時に視覚的にどちらが左か即座に判断出来ます。 これで右と左に悩まされていた日々とはおさらばです! 表示される文字は、Apple watchを装着している手首の位置と紐づいていますので、設定>一般>向き>手首の位置を変更することで表示される文字を変更出来ます。

About

Simple Timer

Features
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This simple and user-friendly timer app is a convenient time management tool for everyone. With a visual display that makes it easy to see time passing, this app helps users develop a sense of time. Designed with an intuitive and straightforward interface, it supports time management for everyday life, study, work, and various activities. Key Features - Visual Timer: Track time easily with a circular indicator that shows the countdown in real-time, shrinking as time passes, making it easy to manage time. - Simple and Intuitive Interface: The straightforward design makes it accessible for users of all ages. With clearly organized buttons and icons, the app is designed to be easy for anyone to use. - Customizable Alert Sounds: Set recorded sounds as alerts, allowing you to receive notifications with the voices of family members or loved ones, creating a friendly and familiar experience. - Customizable Backgrounds: Personalize the timer’s background with your favorite photos or memories, making each use of the timer an enjoyable experience. This timer app supports habit-building, focus improvement, and effortless time management in everyday life. Perfect for taking breaks, managing tasks, or simply relaxing. Start efficient time management with an app that’s great for everyone!

Screenshots

Simple Timer3 screens

Verdict

The call

The clearest difference is in-app purchases: 左(右) at none against Simple Timer's 1. 左(右) also leads on ads (none vs shown) and update cadence (every 2 days vs every 5 days). 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. Simple Timer sells 1 one-off in-app purchase. 左(右) asks for nothing beyond the download.

UpkeepUpdate frequency

左(右) ships an update every 2 days, Simple Timer every 5 days. The most recent releases landed on October 27, 2026 and October 28, 2026 respectively.

Scorecard4 real differences · 2 level
左(右) versus Simple Timer: the parameters behind the verdict, then further details
Parameter左(右)Simple Timer
PriceFreeFree
Update frequencyEvery 2 days — betterEvery 5 days
AdsNo — betterYes
In-app purchasesNo — betterYes
DevicesiPhone, iPod, Apple Watch — betteriPhone, iPad
Requires iOS10.0 — better16.6
Further details — not scored
Size1 MB7 MB
Age rating4+4+
DeveloperOsamu HiraokaEGG STUDIO LIMITED LIABILITY CO

In-app purchases

None

左(右)

No in-app purchases

1 purchases

Simple Timer

One-time1
  • Pro Plan$2.99

Questions

Is 左(右) free?
左(右) is free to download, with no in-app purchases.
Is Simple Timer free?
Simple Timer is free to download, with in-app purchases available.
Do 左(右) or Simple Timer have ads?
Simple Timer shows ads; 左(右) does not.
Which is updated more often, 左(右) or Simple Timer?
左(右) ships an update every 2 days, and Simple Timer every 5 days. Most recently, 左(右) was updated on October 27, 2026 and Simple Timer on October 28, 2026.

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