As of 10 Nov 2026, DAF Pro: Stutter & Parkinson's is #13 in Paid · Medical in Japan, its best of 7 chart positions across 7 countries. Over the last 7 days its biggest climb was 61 places, to #29 in Paid · Medical in the United States. Its best rank in the last 7 days was #5 in Paid · Medical in Japan. Appulse Index first saw DAF Pro: Stutter & Parkinson's in a tracked chart on 8 Oct 2026. Since then it has charted on 34 days in 10 countries, with a best rank of #4 in Paid · Medical in Japan on 15 Oct 2026.
Current rank
#13Japan · Paid · Medical
- Was
- #707 days ago
- Change
- Up 57 placesover 7 days
- Best
- #5in 7 days
- Longest chart run
- 34 daysJapan · Paid · Medical
- New ratings, 7 days
- —Needs a week of rating history
Chart record
Every tracked chart, country and day since Appulse Index first saw this app in a chart.
What's new
Version 4.11.0 · 10 days ago
Updated for iOS 27
Ranking events
- Entered the Paid · Medical chart at #13Brazil
- Entered the Paid · Medical chart at #29United States
- Entered the Grossing · Medical chart at #66Japan
- Climbed #72 → #5 in Paid · MedicalJapan
- Entered the Paid · Medical chart at #21United Kingdom
- Entered the Paid · Medical chart at #99Spain
Show 24 earlier events
- Entered the Paid · Medical chart at #8Germany
- Dropped #8 → #39 in Paid · MedicalIndia
- Entered the Paid · Medical chart at #33Canada
- Entered the Paid · Medical chart at #14Brazil
- Entered the Grossing · Medical chart at #82India
- Climbed #53 → #5 in Paid · MedicalIndia
- Entered the Paid · Medical chart at #17Germany
- Entered the Paid · Medical chart at #90United States
- Entered the Paid · Medical chart at #50United States
- Entered the Paid · Medical chart at #98Spain
- New version 4.11.0 (was 4.10.0)
- Entered the Paid · Medical chart at #27Australia
- Dropped #16 → #73 in Paid · MedicalFrance
- Entered the Paid · Medical chart at #68United States
- Entered the Paid · Medical chart at #31Canada
- Entered the Paid · Medical chart at #10United Kingdom
- Climbed #71 → #7 in Paid · MedicalFrance
- Climbed #86 → #42 in Paid · MedicalUnited States
- Dropped #23 → #70 in Paid · MedicalJapan
- Dropped #22 → #71 in Paid · MedicalFrance
- Entered the Paid · Medical chart at #31Australia
- Entered the Paid · Medical chart at #46Canada
- Dropped #34 → #81 in Paid · MedicalUnited States
- Entered the Paid · Medical chart at #14United Kingdom
About
DAF Pro helps people who stammer and people with Parkinson's slow down and speak more fluently. Put on headphones, speak, and hear your own voice a fraction of a second later. How It Works Delayed auditory feedback (DAF) is a clinically recognised speech therapy technique. Hearing your voice on a short delay naturally slows your speaking rate, which can make speech smoother and clearer. Research suggests DAF helps around 1 in 3 people who stammer, and it is also used to help people with…
Ranks come from Apple's public App Store charts, checked once a day. Appulse Index isn't affiliated with Apple.
Rank history
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
Japan · Paid · Medical: best #5, latest #13, over 7 snapshots since 4 Nov.
In 7 charts now
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| Japan· Paid · Medical · best #4 · 34 days · 7 days Up 57 places | #13 | Down 8 places | Up 57 places | #4 | 34 |
| Brazil· Paid · Medical · best #13 · 7 days | #13 | New entry | Not enough history yet | #13 | 7 |
| United States· Paid · Medical · best #29 · 24 days · 7 days Up 61 places | #29 | New entry | Up 61 places | #29 | 24 |
| United Kingdom· Paid · Medical · best #10 · 18 days | #39 | Down 18 places | Not enough history yet | #10 | 18 |
| Germany· Paid · Medical · best #8 · 10 days · 7 days Down 23 places | #40 | Down 14 places | Down 23 places | #8 | 10 |
| India· Paid · Medical · best #5 · 34 days · 7 days Up 10 places | #43 | Up 1 place | Up 10 places | #5 | 34 |
| France· Paid · Medical · best #7 · 34 days · 7 days Up 4 places | #80 | Down 2 places | Up 4 places | #7 | 34 |
Competitors
Compare with the top 3Full chartTop of Paid · Medical in Japan. DAF Pro: Stutter & Parkinson's is #13 there. Changes are over 7 days.
- #1 (number one)Up 1 place
AutoSnore: Snoring RecorderTantsissa - #2Down 1 place
Human Anatomy Atlas 2027Visible Body Apps - #3Up 2 places
Muscles & KinesiologyVisible Body Apps - #4Up 11 places
Monash FODMAP DietMonash University - #5Not enough history yet
医療略語集 - 看護師・研修医のカルテ略語辞典seki tomoya - #6Up 14 places
Muscle Trigger PointsReal Bodywork - #7Up 11 places
緊急度判定支援システム JTAS2023HERUSU SHUPPAN CO.,INC. - #8Up 57 places
３×３Ｄ視力回復プレミアム（広告なし）SHUUICHI WATANABE - #9New entry
NewABGAnalyzerYusuke Tsukamoto - #10New entry
JTASナビtatsuya masuda - #11Not enough history yet
経穴図鑑ナビSangi Iwane - #12New entry
Holter LogGEORGE N LOPOYDA - #14Up 12 places
さわって眠れる睡眠アプリ - 睡眠観測(永続版)GIZIN Inc. - #15Not enough history yet
かんたん通院履歴管理Shun Isayama - #16New entry
Anatomy Quiz PremiumAlexander Streuer - #17Up 22 places
ツボ暗記カードMORINOMIYA IRYOUGAKUEN - #18Up 6 places
整形外科専門医試験Jiro Kato - #19Up 25 places
Tone Generator_Promichael heinz - #20Up 32 places
iBP Blood PressureLeading Edge Apps LLC - #21Up 47 places
CT Passport 頭部Kazuya Takayama
Screenshots
More from Speechtools Ltd
| App | Best rank now | Released | App Store |
|---|---|---|---|
 Swallow Prompt: Saliva HelpMedical · | Paid · MedicalAustralia#11 | ||
 Voice Analyst: Pitch & VolumeMedical · | Paid · MedicalAustralia#14 | ||
 One Minute Voice WarmUpMusic · | Paid · MusicCanada#67 | ||
 Christella VoiceUp CompleteHealth & Fitness · | Not charting |
As of 10 Nov 2026, DAF Pro: Stutter & Parkinson's is #13 in Paid · Medical in Japan, its best of 7 chart positions across 7 countries. Over the last 7 days its biggest climb was 61 places, to #29 in Paid · Medical in the United States. Its best rank in the last 7 days was #5 in Paid · Medical in Japan. Appulse Index first saw DAF Pro: Stutter & Parkinson's in a tracked chart on 8 Oct 2026. Since then it has charted on 34 days in 10 countries, with a best rank of #4 in Paid · Medical in Japan on 15 Oct 2026.
Store listing
How the app presents itself on the App Store. Select a screenshot to open it full size.
App facts
What Apple publishes about this app. Ratings are from one country's App Store.
- Price
- $5.99
- Rating
- 4.1 / 5 stars16 ratings United Kingdom
- Released
- 3 Jan 2012
- Last update
- Version 4.11.0
- Requires
- iOS 17.0or later
- Size
- 4.9 MB
- Languages
- 25
Chart record
Every tracked chart, country and day since Appulse Index first saw this app in a chart.
Rank history
Higher on the chart is better: #1 is at the top.
Sign in to see 30 days, 90 days and all history.
Japan · Paid · Medical: best #5, latest #13, over 7 snapshots since 4 Nov.
Current rankings
Every chart this app is in right now, best position first.
| Chart | Rank | 24 h | 7 days | Best | Days on chart |
|---|---|---|---|---|---|
| Japan· Paid · Medical · best #4 · 34 days · 7 days Up 57 places | #13 | Down 8 places | Up 57 places | #4 | 34 |
| Brazil· Paid · Medical · best #13 · 7 days | #13 | New entry | Not enough history yet | #13 | 7 |
| United States· Paid · Medical · best #29 · 24 days · 7 days Up 61 places | #29 | New entry | Up 61 places | #29 | 24 |
| United Kingdom· Paid · Medical · best #10 · 18 days | #39 | Down 18 places | Not enough history yet | #10 | 18 |
| Germany· Paid · Medical · best #8 · 10 days · 7 days Down 23 places | #40 | Down 14 places | Down 23 places | #8 | 10 |
| India· Paid · Medical · best #5 · 34 days · 7 days Up 10 places | #43 | Up 1 place | Up 10 places | #5 | 34 |
| France· Paid · Medical · best #7 · 34 days · 7 days Up 4 places | #80 | Down 2 places | Up 4 places | #7 | 34 |
Ranking events
Entries, big moves, #1s and new versions we've recorded, by day.
- Entered the Paid · Medical chart at #13Brazil
- Entered the Paid · Medical chart at #29United States
- Entered the Grossing · Medical chart at #66Japan
- Climbed #72 → #5 in Paid · MedicalJapan
- Entered the Paid · Medical chart at #21United Kingdom
- Entered the Paid · Medical chart at #99Spain
- Entered the Paid · Medical chart at #8Germany
- Dropped #8 → #39 in Paid · MedicalIndia
- Entered the Paid · Medical chart at #33Canada
- Entered the Paid · Medical chart at #14Brazil
- Entered the Grossing · Medical chart at #82India
- Climbed #53 → #5 in Paid · MedicalIndia
- Entered the Paid · Medical chart at #17Germany
- Entered the Paid · Medical chart at #90United States
- Entered the Paid · Medical chart at #50United States
- Entered the Paid · Medical chart at #98Spain
- New version 4.11.0 (was 4.10.0)
- Entered the Paid · Medical chart at #27Australia
- Dropped #16 → #73 in Paid · MedicalFrance
- Entered the Paid · Medical chart at #68United States
- Entered the Paid · Medical chart at #31Canada
- Entered the Paid · Medical chart at #10United Kingdom
- Climbed #71 → #7 in Paid · MedicalFrance
- Climbed #86 → #42 in Paid · MedicalUnited States
- Dropped #23 → #70 in Paid · MedicalJapan
- Dropped #22 → #71 in Paid · MedicalFrance
- Entered the Paid · Medical chart at #31Australia
- Entered the Paid · Medical chart at #46Canada
- Dropped #34 → #81 in Paid · MedicalUnited States
- Entered the Paid · Medical chart at #14United Kingdom
Competitors
Compare with the top 3Full chartTop of Paid · Medical in Japan. DAF Pro: Stutter & Parkinson's is #13 there. Changes are over 7 days.
- #1 (number one)Up 1 placeAutoSnore: Snoring RecorderTantsissa
- #2Down 1 placeHuman Anatomy Atlas 2027Visible Body Apps
- #3Up 2 placesMuscles & KinesiologyVisible Body Apps
- #4Up 11 placesMonash FODMAP DietMonash University
- #5Not enough history yet医療略語集 - 看護師・研修医のカルテ略語辞典seki tomoya
- #6Up 14 placesMuscle Trigger PointsReal Bodywork
- #7Up 11 places緊急度判定支援システム JTAS2023HERUSU SHUPPAN CO.,INC.
- #8Up 57 places３×３Ｄ視力回復プレミアム（広告なし）SHUUICHI WATANABE
- #9New entryNewABGAnalyzerYusuke Tsukamoto
- #10New entryJTASナビtatsuya masuda
- #11Not enough history yet経穴図鑑ナビSangi Iwane
- #12New entryHolter LogGEORGE N LOPOYDA
- #13Up 57 places
DAF Pro: Stutter & Parkinson'sThis app - #14Up 12 placesさわって眠れる睡眠アプリ - 睡眠観測(永続版)GIZIN Inc.
- #15Not enough history yetかんたん通院履歴管理Shun Isayama
- #16New entryAnatomy Quiz PremiumAlexander Streuer
- #17Up 22 placesツボ暗記カードMORINOMIYA IRYOUGAKUEN
- #18Up 6 places整形外科専門医試験Jiro Kato
- #19Up 25 placesTone Generator_Promichael heinz
- #20Up 32 placesiBP Blood PressureLeading Edge Apps LLC
- #21Up 47 placesCT Passport 頭部Kazuya Takayama
About
From the app's App Store listing.
DAF Pro helps people who stammer and people with Parkinson's slow down and speak more fluently. Put on headphones, speak, and hear your own voice a fraction of a second later.
How It Works Delayed auditory feedback (DAF) is a clinically recognised speech therapy technique. Hearing your voice on a short delay naturally slows your speaking rate, which can make speech smoother and clearer. Research suggests DAF helps around 1 in 3 people who stammer, and it is also used to help people with…
What's new
Version 4.11.0 · 30 Oct 2026 ·
Updated for iOS 27
More from Speechtools Ltd
Their other apps that Appulse has seen in the charts, charting ones first.
| App | Best rank now | Released | App Store |
|---|---|---|---|
Swallow Prompt: Saliva HelpMedical · | Paid · MedicalAustralia#11 | ||
Voice Analyst: Pitch & VolumeMedical · | Paid · MedicalAustralia#14 | ||
One Minute Voice WarmUpMusic · | Paid · MusicCanada#67 | ||
Christella VoiceUp CompleteHealth & Fitness · | Not charting |
Ranks come from Apple's public App Store charts, checked once a day. Appulse Index isn't affiliated with Apple.