3.5.0 Safe to install
Harnessing Speech Confidence with DAF Pro

DAF Pro by Speechtools Ltd provides innovative tools for individuals struggling with stuttering and stammering, offering a promising approach to improve fluency and speech clarity.
The world's top-rated DAF app, DAF Professional, serves a global community of users in over 100 countries. Developed to assist individuals who stutter or have neurological conditions like Parkinson's Disease, this app enhances speech clarity by slowing down the rate of speech.
Designed and tested by a certified Speech and Language Therapist (MSc, PGDip, BAHons, HPC registered and RCSLT member), DAF Professional offers a user-friendly, professional speech therapy tool that can make a substantial impact on individuals or their acquaintances.
DAF Professional successfully achieves remarkably low latency feedback, even when running in the background. This well-established speech and language therapy tool known as Delayed Auditory Feedback (DAF) works by modifying a person's auditory feedback loop, leading to a slower speaking rate.
Originally tailored for individuals who stutter, DAF has proven effective for people with other speech challenges, such as Parkinson's Disease (Downie et al., 1981; Dagenaise, Outhwood & Lee, 1998; Lowit et al., 2006 and most recently Lowit et al., 2010).
For individuals with various medical speech conditions, DAF may also offer benefits; however, clinical research on these specific groups is yet to be conducted.
Please note that when using Bluetooth devices, there is an additional 60ms delay in the feedback system. If you're using a Bluetooth headset, ensure it's turned on after opening the app for proper functionality.
DAF Professional excels in working seamlessly in the background or when the screen is turned off. However, like all similar apps, it does not function during phone calls or while other media apps are playing simultaneously.
We value your feedback and would appreciate any comments or suggestions. Please reach out to us at [email protected].
Samantha Brady, our esteemed Lead Speech and Language Therapist, earned her qualifications as a Speech and Language Therapist in 2001 (PGDip, City University) and obtained her Masters in Speech and Language Therapy in 2006 (MSc, City University). With extensive experience in a variety of settings, Brady's clinical expertise lies in adult neurology and voice. She is a member of the Royal College of Speech and Language Therapists (RCSLT), HPC Registered (SL10250), and Lee Silverman Voice Treatment Certified (LSVT).
DAF Professional prioritizes data protection and is fully GDPR compliant. Rest assured that no data will be collected without your prior consent.
Overview
DAF Pro: Stuttering,Stammering is a Commercial software in the category Home & Hobby developed by Speechtools Ltd.
The latest version of DAF Pro: Stuttering,Stammering is 3.5.0, released on 07/05/2024. It was initially added to our database on 02/07/2024.
DAF Pro: Stuttering,Stammering runs on the following operating systems: iOS.
Users of DAF Pro: Stuttering,Stammering gave it a rating of 4 out of 5 stars.
Pros
- User-friendly interface that is easy to navigate.
- Effective in helping users manage stuttering and stammering in various situations.
- Includes a variety of exercises and tools tailored for different speech needs.
- Can be customized based on individual user preferences and progress.
- Offers a community support feature where users can connect with others facing similar challenges.
Cons
- The application may require a learning curve for some users to fully utilize all features.
- Subscription costs may be considered high by some users, depending on their budget.
- Limited offline functionality – dependent on internet access for full use.
- Some users report occasional bugs or crashes that disrupt their workflow.
- Not as comprehensive as one-on-one therapy; may need to be used in conjunction with other forms of speech therapy.

Boris Weber
I am an editor at UpdateStar. I started as a support engineer, and am now specialized in writing about general software topics from a usability and performance angle among others. I telecommute from UpdateStar’s Berlin office, when I am not working remote as a digital nomad for UpdateStar. When I'm not analyzing the latest software updates, you can find me exploring new cities, immersing myself in local cultures, and discovering innovative tech trends across the globe.
Latest Reviews by Boris Weber
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