---
title: "DAF Pro: 流暢な発話 - Reviews, Revenue and Downloads in Japan | Apple App Store"
description: "世界中で使われているNo.1 DAFアプリ！ DAF Proは、吃音（どもり） やパーキンソン病 などの神経疾患を持つ方をサポートするプロ向けのスピーチセラピーアプリです。話す速度を遅くし、より明瞭でスムーズな発話を実現します。  DAF Proの特徴 * 実証されたスピーチセラピー – 遅延聴覚フィードバック（DAF） を使用し、臨床的に認められた手法。 * 超低遅延 – リアルタイムでフィード"
---

# DAF Pro: 流暢な発話 — Japan
> 吃音・パーキンソン・失語症

![DAF Pro App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/1c/4e/42/1c4e4288-72c1-edeb-c76d-1e78740b2adc/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Speechtools](https://apptail.io/developer/speechtools-Wvv) (United Kingdom)
**Category:** Medical
**Rating:** 3.6/5 (10 ratings)
**Price:** Free
**Bundle ID:** com.aszart.dafprofessional
**Store:** Apple App Store
**Country:** Japan
**Version:** 4.9.1 (released 2026-05-13)
**Original Release:** 2012-01-04
**Languages:** English, Arabic, Danish, Dutch, Finnish, French, German, Greek (modern), Hebrew (modern), Hindi, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Russian, Chinese, Spanish, Swedish, Thai, Turkish, Vietnamese

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/jp/app/app/id491299921)
**AppTail Page:** [https://apptail.io/app/daf-pro-fluent-speech-RFZc/japan](https://apptail.io/app/daf-pro-fluent-speech-RFZc/japan)

## DAF Pro Description
世界中で使われているNo.1 DAFアプリ！
DAF Proは、吃音（どもり） やパーキンソン病 などの神経疾患を持つ方をサポートするプロ向けのスピーチセラピーアプリです。話す速度を遅くし、より明瞭でスムーズな発話を実現します。

DAF Proの特徴
* 実証されたスピーチセラピー – 遅延聴覚フィードバック（DAF） を使用し、臨床的に認められた手法。
* 超低遅延 – リアルタイムでフィードバックを提供し、バックグラウンドでも動作可能。
* 簡単操作 – 専門家から一般ユーザーまで誰でも使用可能。
* 専門家が推奨 – 認定スピーチセラピストによって開発・テスト済み。

使い方
DAF Proは、あなたの声を変化させることで自然に話す速度を遅くします。研究によると、吃音やパーキンソン病の人の3人に1人に効果があることが示されています。

快適に使える設計

画面がオフの時でも動作可能
有線 & Bluetoothヘッドセット対応 (Bluetoothは60msの遅延を追加)
広告なし、データ収集なし – GDPR準拠

ユーザーの声
* 「話し方が劇的に改善しました！」
* 「シンプルで効果的 – ぜひおすすめ！」

お問い合わせ: support@speechtools.co

## DAF Pro Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/c7/90/26/c79026f5-f23b-1659-0901-10ad43607915/iPhone_13_Pro_Max-1.1_Launched_framed.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f9/ad/f3/f9adf3b5-e642-b99b-f9ab-9aa91f8cf259/iPhone_13_Pro_Max-1.2_Started_framed.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/91/d6/f5/91d6f572-a50a-bb43-5c23-ab78fe68c412/iPhone_13_Pro_Max-1.3_Stopped_framed.png/1284x2778.png)

## DAF Pro Rating Breakdown in Japan
- 5 stars: 4 (40%)
- 4 stars: 3 (30%)
- 3 stars: 0 (0%)
- 2 stars: 1 (10%)
- 1 stars: 2 (20%)



## DAF Pro Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Paid | Ukraine | Medical | #4 |
| Top Paid | Norway | Medical | #5 |
| Top Paid | Japan | Medical | #6 |
| Top Paid | Poland | Medical | #7 |
| Top Paid | Vietnam | Medical | #7 |
| Top Paid | Kazakhstan | Medical | #13 |
| Top Paid | Brazil | Medical | #17 |
| Top Paid | Russia | Medical | #24 |
| Top Paid | China | Medical | #26 |
| Top Paid | Canada | Medical | #30 |
| Top Paid | South Korea | Medical | #31 |
| Top Paid | Nigeria | Medical | #31 |
| Top Paid | Türkiye | Medical | #32 |
| Top Grossing | Vietnam | Medical | #33 |
| Top Paid | Azerbaijan | Medical | #34 |
| Top Paid | United States | Medical | #34 |
| Top Paid | Portugal | Medical | #39 |
| Top Paid | Pakistan | Medical | #40 |
| Top Paid | Belarus | Medical | #41 |
| Top Paid | Egypt | Medical | #42 |
| Top Paid | Sweden | Medical | #42 |
| Top Paid | Kuwait | Medical | #43 |
| Top Paid | Saudi Arabia | Medical | #46 |
| Top Paid | United Kingdom | Medical | #48 |
| Top Paid | Taiwan | Medical | #52 |
| Top Grossing | Russia | Medical | #52 |
| Top Paid | United Arab Emirates | Medical | #52 |
| Top Paid | Denmark | Medical | #52 |
| Top Grossing | Norway | Medical | #59 |
| Top Paid | India | Medical | #60 |
| Top Paid | Israel | Medical | #60 |
| Top Paid | Lebanon | Medical | #61 |
| Top Paid | Finland | Medical | #64 |
| Top Grossing | Japan | Medical | #69 |
| Top Paid | Romania | Medical | #72 |
| Top Paid | Dominican Republic | Medical | #75 |
| Top Grossing | Taiwan | Medical | #75 |
| Top Grossing | Portugal | Medical | #76 |
| Top Grossing | Ukraine | Medical | #80 |
| Top Paid | Argentina | Medical | #81 |
| Top Paid | Belgium | Medical | #84 |
| Top Paid | Italy | Medical | #86 |
| Top Paid | France | Medical | #87 |
| Top Paid | Singapore | Medical | #88 |
| Top Paid | Hong Kong SAR China | Medical | #92 |
| Top Paid | Peru | Medical | #95 |
| Top Paid | Spain | Medical | #97 |
| Top Paid | Czechia | Medical | #98 |
| Top Paid | Vietnam | Overall | #104 |
| Top Paid | Chile | Medical | #105 |
| Top Paid | South Africa | Medical | #106 |
| Top Paid | Ireland | Medical | #111 |
| Top Paid | Norway | Overall | #112 |
| Top Paid | Netherlands | Medical | #123 |
| Top Paid | Greece | Medical | #139 |
| Top Paid | Ecuador | Medical | #148 |
| Top Paid | Indonesia | Medical | #149 |
| Top Paid | Hungary | Medical | #150 |
| Top Paid | Malaysia | Medical | #154 |
| Top Paid | Ukraine | Overall | #160 |
| Top Paid | Australia | Medical | #169 |
| Top Paid | Austria | Medical | #175 |
| Top Paid | Switzerland | Medical | #175 |
| Top Paid | Colombia | Medical | #176 |
| Top Paid | Germany | Medical | #179 |
| Top Paid | Thailand | Medical | #181 |
| Top Paid | New Zealand | Medical | #183 |
| Top Paid | Philippines | Medical | #198 |
| Top Paid | Brazil | Overall | #204 |
| Top Paid | Mexico | Medical | #210 |
| Top Paid | Japan | Overall | #269 |
| Top Paid | Poland | Overall | #304 |
| Top Paid | Canada | Overall | #471 |


## Apps Similar to DAF Pro
- [Stamurai: Stuttering Treatment](https://apptail.io/app/stamurai-stuttering-treatment-snU/japan)
- [BeneTalk: Stuttering Coach](https://apptail.io/app/benetalk-stuttering-coach-KFZc/japan)
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## DAF Pro Available In
- [United States](https://apptail.io/app/daf-pro-fluent-speech-RFZc/united-states)
- [Russia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/russia)
- [China](https://apptail.io/app/daf-pro-fluent-speech-RFZc/china)
- [United Kingdom](https://apptail.io/app/daf-pro-fluent-speech-RFZc/united-kingdom)
- [Japan](https://apptail.io/app/daf-pro-fluent-speech-RFZc/japan)
- [Canada](https://apptail.io/app/daf-pro-fluent-speech-RFZc/canada)
- [Sweden](https://apptail.io/app/daf-pro-fluent-speech-RFZc/sweden)
- [Türkiye](https://apptail.io/app/daf-pro-fluent-speech-RFZc/turkey)
- [France](https://apptail.io/app/daf-pro-fluent-speech-RFZc/france)
- [Italy](https://apptail.io/app/daf-pro-fluent-speech-RFZc/italy)
- [India](https://apptail.io/app/daf-pro-fluent-speech-RFZc/india)
- [Saudi Arabia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/saudi-arabia)
- [Germany](https://apptail.io/app/daf-pro-fluent-speech-RFZc/germany)
- [Norway](https://apptail.io/app/daf-pro-fluent-speech-RFZc/norway)
- [Taiwan](https://apptail.io/app/daf-pro-fluent-speech-RFZc/taiwan)
- [Brazil](https://apptail.io/app/daf-pro-fluent-speech-RFZc/brazil)
- [Mexico](https://apptail.io/app/daf-pro-fluent-speech-RFZc/mexico)
- [Australia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/australia)
- [Spain](https://apptail.io/app/daf-pro-fluent-speech-RFZc/spain)
- [Ecuador](https://apptail.io/app/daf-pro-fluent-speech-RFZc/ecuador)
- [Netherlands](https://apptail.io/app/daf-pro-fluent-speech-RFZc/netherlands)
- [United Arab Emirates](https://apptail.io/app/daf-pro-fluent-speech-RFZc/united-arab-emirates)
- [South Africa](https://apptail.io/app/daf-pro-fluent-speech-RFZc/south-africa)
- [Argentina](https://apptail.io/app/daf-pro-fluent-speech-RFZc/argentina)
- [Belgium](https://apptail.io/app/daf-pro-fluent-speech-RFZc/belgium)
- [Switzerland](https://apptail.io/app/daf-pro-fluent-speech-RFZc/switzerland)
- [Chile](https://apptail.io/app/daf-pro-fluent-speech-RFZc/chile)
- [Colombia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/colombia)
- [Denmark](https://apptail.io/app/daf-pro-fluent-speech-RFZc/denmark)
- [Egypt](https://apptail.io/app/daf-pro-fluent-speech-RFZc/egypt)
- [Finland](https://apptail.io/app/daf-pro-fluent-speech-RFZc/finland)
- [Greece](https://apptail.io/app/daf-pro-fluent-speech-RFZc/greece)
- [Indonesia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/indonesia)
- [Kazakhstan](https://apptail.io/app/daf-pro-fluent-speech-RFZc/kazakhstan)
- [New Zealand](https://apptail.io/app/daf-pro-fluent-speech-RFZc/new-zealand)
- [Peru](https://apptail.io/app/daf-pro-fluent-speech-RFZc/peru)
- [Philippines](https://apptail.io/app/daf-pro-fluent-speech-RFZc/philippines)
- [Romania](https://apptail.io/app/daf-pro-fluent-speech-RFZc/romania)
- [Singapore](https://apptail.io/app/daf-pro-fluent-speech-RFZc/singapore)
- [Ukraine](https://apptail.io/app/daf-pro-fluent-speech-RFZc/ukraine)
- [Bulgaria](https://apptail.io/app/daf-pro-fluent-speech-RFZc/bulgaria)
- [Lebanon](https://apptail.io/app/daf-pro-fluent-speech-RFZc/lebanon)
- [Lithuania](https://apptail.io/app/daf-pro-fluent-speech-RFZc/lithuania)
- [Luxembourg](https://apptail.io/app/daf-pro-fluent-speech-RFZc/luxembourg)
- [Latvia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/latvia)
- [Madagascar](https://apptail.io/app/daf-pro-fluent-speech-RFZc/madagascar)
- [Hong Kong SAR China](https://apptail.io/app/daf-pro-fluent-speech-RFZc/hong-kong)
- [Malaysia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/malaysia)
- [Nigeria](https://apptail.io/app/daf-pro-fluent-speech-RFZc/nigeria)
- [Estonia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/estonia)
- [Algeria](https://apptail.io/app/daf-pro-fluent-speech-RFZc/algeria)
- [Nepal](https://apptail.io/app/daf-pro-fluent-speech-RFZc/nepal)
- [Azerbaijan](https://apptail.io/app/daf-pro-fluent-speech-RFZc/azerbaijan)
- [Armenia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/armenia)
- [Austria](https://apptail.io/app/daf-pro-fluent-speech-RFZc/austria)
- [Pakistan](https://apptail.io/app/daf-pro-fluent-speech-RFZc/pakistan)
- [Poland](https://apptail.io/app/daf-pro-fluent-speech-RFZc/poland)
- [Portugal](https://apptail.io/app/daf-pro-fluent-speech-RFZc/portugal)
- [Uzbekistan](https://apptail.io/app/daf-pro-fluent-speech-RFZc/uzbekistan)
- [Dominican Republic](https://apptail.io/app/daf-pro-fluent-speech-RFZc/dominican-republic)
- [Czechia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/czechia)
- [Belarus](https://apptail.io/app/daf-pro-fluent-speech-RFZc/belarus)
- [Vietnam](https://apptail.io/app/daf-pro-fluent-speech-RFZc/vietnam)
- [Slovenia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/slovenia)
- [Thailand](https://apptail.io/app/daf-pro-fluent-speech-RFZc/thailand)
- [Israel](https://apptail.io/app/daf-pro-fluent-speech-RFZc/israel)
- [Ireland](https://apptail.io/app/daf-pro-fluent-speech-RFZc/ireland)
- [Iceland](https://apptail.io/app/daf-pro-fluent-speech-RFZc/iceland)
- [Hungary](https://apptail.io/app/daf-pro-fluent-speech-RFZc/hungary)
- [Croatia](https://apptail.io/app/daf-pro-fluent-speech-RFZc/croatia)
- [South Korea](https://apptail.io/app/daf-pro-fluent-speech-RFZc/south-korea)
- [Kuwait](https://apptail.io/app/daf-pro-fluent-speech-RFZc/kuwait)

---

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