# 15 minutes of Focus timer — Inspire yourself,stay focused! > App to reduce smartphone reliance by setting timed focus sessions. (iPhone/iPad app by Takamitsu Kakita.) - Source: https://appshunter.io/ios/app/15-minutes-of-focus-timer/id1142010154 (this page in markdown: same URL + `.md`) - Developer: [Takamitsu Kakita](https://appshunter.io/developer/1142010153) - Category: Education, Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 8.0 · 29 MB - Languages: English, Japanese - Released: 2016-09-06 - Data updated: 2026-06-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/15-minutes-of-focus-timer/id1142010154/reviews.md ## What is 15 minutes of Focus timer? This is the best smartphone app to reduce reliance on smartphones for today! Set your "Focus Time" and concentrate for a short time! It prohibits smartphones and encourages concentration. *On July 28, 2019, in an article on smartphone addiction in the Yomiuri Shimbun that's the most famous newspaper in Japan, it was introduced as a recommended app to shake you free from addiction! *I can't stop playing app games... *I keep looking at SNS... *If a message comes, I stop studying... *I feel kind of worried if I don’t touch my smartphone... Don’t you have a worry, you're addicted to smartphones. I know, but I can't stop. I want to do my best. We support you if you think "I want to do my best". There is a limit to human concentration. Set a short time as your Ganbari Time (Time to work hard), you prohibit your smartphone and concentrate on studying and working during the time! I recommend it to anyone who wants to improve themselves, highly conscious people, people who have a sense of crisis but feel lazy, or people who have a feeling of trying hard! *How to use it: *After starting the application, decide the time to concentrate and start! The timer starts. *The smartphone screen stays on during the designated time. You can't switch to the home screen or use other applications. *An encouraging "great man's words" is posted on the timer screen. When you feel discourage, let's stop by looking at the words of wisdom. *Your concentration is measured. *You will receive a medal by accumulating measured results! Let's aim for a higher rank. *Still, if you're concerned about message or email notifications, I recommend using [More Ganbari Time(Time to work hard)], which can only be started when Internet access is disabled! Aim for 100% concentration and make it a habit to shake free from relying on smartphones! ## Key features - Set dedicated focus time - Blocks smartphone access - Motivational quotes - Earn medals for concentration - Optional internet disable mode - Tracks concentration time ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | More concentration mode | $0.99 | one-time | ## Recent user reviews (10 of 24) All indexed reviews: https://appshunter.io/ios/app/15-minutes-of-focus-timer/id1142010154/reviews.md ### 1/5 — 電気食い虫 *2020-10-27, version 4.70* スリープ中に使えないのが致命的過ぎる 四六時中ずっと付けてろってか？ ### 5/5 — サクラじゃないです *2020-04-26, version 4.70* とってもいい 名言が出ていて、やめようと思う時でももう一踏ん張りできる。また、目標がいくつかありモチベにも繋がる。本当に良いアプリです。 追記 目標の追加を要望したいです ### 5/5 — まさに、神アプリ。 *2020-01-03, version 4.61* 勉強のアプリを探していて、 見つけたのがコレ!! シンプルで使いやすい！まさに神アプリ( • ̀ω•́ )✧ スタート押した瞬間に集中出来る！ 名言が本当に勇気出ます！ 勉強の途中にスマホ使っちゃうって人は 是非使って見て!! おすすめです(๑•̀ㅁ•́ฅ✧ ### 3/5 — 充電の減りが多い *2019-10-19, version 4.60* 使ったら、充電をかなり多いです😢どうすればいいでしょうか。 ### 4/5 — シンプルで良い *2019-09-17, version 4.56* シンプルで使いやすいです。 タイマーが表示されると、スマホを触らないように自制することができました。 ただ一つ改善してほしいのは、スタートボタンを押して、スタートした気になってしまい、その後のattention!を閉じるのを忘れて、タイマーがスタートされてなくて、後でがっかりする間違いが起きやすいところです。 attentionの表示ははじめの1回だけにして後は表示しないようにするか、もしくはattentionが表示されててもタイマーは進んでる状態にするか、それとも設定で表示しないようにできるか、など改善してほしいです。 よろしくお願いします。 ### 5/5 — シンプルで使いやすい！！ *2019-07-28, version 4.56* 初期設定などの面倒な手順がなく、試しに使ってみようかなと思ってダウンロードしてみたら、すぐに使えるのが嬉しいです😃 画面の作りもシンプルで、わかりやすかったです😊 これから、更に使っていくうちに、どんな名言が出てくるのか楽しみです✨ ### 5/5 — 動かなくなりました *2019-07-16, version 4.52* タップしても反応しません ### 4/5 — 反応しなくなった… *2019-07-16, version 4.52* iPhoneユーザーです。 便利に使わせていただいていたのですが、アップデートしてからいきなり画面が反応しなくなりました… もうすぐテスト期間なので困ってます… ### 5/5 — 集中できる！ *2019-07-07, version 4.51* このアプリのおかげで勉強に集中できるようになりました。ありがとうございます。 ### 4/5 — スリープ状態？？ *2019-03-23, version 4.30* 他の方のレビューを見たのですが計測始めて画面を切る、真っ暗にしたら(これがスリープ状態？？)パーセントが増えないってことですか？？ 他のアプリ開かずに終えれたのに0%というのは辛いです😢ずっと画面が付いたままじゃないと100%にならないのでしょうか？？ ## Frequently asked questions about 15 minutes of Focus timer ### How does 15 minutes of Focus timer help with smartphone addiction? 15 minutes of Focus timer helps by blocking your smartphone's access to other apps and the home screen during designated focus periods. This encourages concentration on your chosen task, reducing the urge to check notifications or browse social media. ### What is the 'Ganbari Time' feature in 15 minutes of Focus timer? 'Ganbari Time' refers to the set duration you choose to concentrate without smartphone distractions. The app prohibits usage during this time, supporting your efforts to focus on studying or working. ### Can I use 15 minutes of Focus timer offline? Yes, 15 minutes of Focus timer offers a '[More Ganbari Time]' mode that can disable internet access entirely. This is recommended if you are concerned about message or email notifications interrupting your focus. ### Does 15 minutes of Focus timer offer any rewards for staying focused? Yes, the app measures your concentration and awards medals for accumulating results. You can aim for higher ranks by consistently achieving focused sessions. ### What kind of content is displayed on the timer screen in 15 minutes of Focus timer? The timer screen features "great man's words" or motivational quotes. These are intended to provide encouragement when you feel discouraged during your focus session. ### Is 15 minutes of Focus timer suitable for younger users? The app has an age rating of 4+, making it generally suitable for younger users. Its focus on reducing screen time and encouraging concentration can be beneficial for students. ### How often is 15 minutes of Focus timer updated? The latest version of 15 minutes of Focus timer is 4.83, and it was last updated on July 9, 2021. While updates may not be frequent, the app's core functionality remains stable. ### What devices are compatible with 15 minutes of Focus timer? 15 minutes of Focus timer is available for iPhone and iPod devices. It is designed to help users manage their smartphone usage on these platforms. ## Version history (last 5 releases) ### 4.83 — 2021-07-09 ・Improved so that the previous time setting is already selected when the app is started. ### 4.81 — 2020-12-28 ・ Improved stability ・ Addition of battery saving mode ### 4.70 — 2020-01-07 Now you can set the time as you like. ### 4.61 — 2019-10-19 The remaining Japanese was completely translated into English. ### 4.60 — 2019-09-25 A popular app in Japan, the English version has been new released! ## Apps similar to 15 minutes of Focus timer | App | Rating | Price | Category | | --- | --- | --- | --- | | [Initiationen](https://appshunter.io/ios/app/initiationen/id6443526080) | — | Free | Education | | [Memorization:Spaced Repetition](https://appshunter.io/ios/app/memorizationspaced-repetition/id6443955900) | — | Free | Education | | [Daily Brain Training](https://appshunter.io/ios/app/daily-brain-training/id1088644441) | 4.6 (91) | Free | Education | | [FishCure](https://appshunter.io/ios/app/fishcure/id1134446132) | 4.4 (4,312) | Free | Education | | [reminDO - Ensure knowledge](https://appshunter.io/ios/app/remindo-ensure-knowledge/id1058865810) | 4.8 (61) | Free | Education | | [21K School](https://appshunter.io/ios/app/21k-school/id1619098640) | — | Free | Education | ## More apps by Takamitsu Kakita - [Hybrid Timer](https://appshunter.io/ios/app/hybrid-timer/id1552404491) - [MotiMe: Encouragement Alert](https://appshunter.io/ios/app/motime-encouragement-alert/id6469449678) All apps by Takamitsu Kakita: https://appshunter.io/developer/1142010153 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*