Comparison

Stuttering Therapy (DAF) vs StutterFlow Stuttering Therapy

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

Head to head
About

Stuttering Therapy (DAF)

This app offers a scientifically validated technique to improve speech fluency for individuals who stutter. It uses delayed auditory feedback, adjustable in real-time, to help users practice smoother speech patterns conveniently from their smartphone.

Highlights
  • Adjustable delay settings (0-200ms)
  • Real-time audio processing
  • Professional audio quality
  • Automatic headphone detection
  • Personalized and saved settings
  • Simple, intuitive interface
Features
Read full description

Overcome stuttering and improve speech fluency with our professional Delayed Auditory Feedback (DAF) therapy app. Designed for individuals who stutter, this evidence-based tool helps you practice speech therapy exercises conveniently from your smartphone. WHAT IS DELAYED AUDITORY FEEDBACK? Delayed Auditory Feedback is a scientifically-validated technique used by speech therapists worldwide. By hearing your voice with a slight delay (adjustable from 0-200ms), your brain receives altered auditory feedback that naturally promotes smoother, more fluent speech patterns. KEY FEATURES Adjustable Delay Settings Customize the audio delay between 0-200 milliseconds to find your optimal therapy setting. Fine-tune the delay that works best for your individual speech patterns. Real-Time Audio Processing Experience instant, low-latency audio feedback through your headphones, ensuring effective therapy sessions without distracting lag. Professional Audio Quality High-quality 16kHz audio capture ensures clear, natural sound reproduction for the most effective therapy experience. Smart Device Detection Automatic headphone detection prevents audio feedback and ensures safe, comfortable therapy sessions. Personalized Settings Your preferred delay settings are automatically saved, so you can start therapy immediately every time you open the app. Simple, Intuitive Interface Clean, user-friendly design lets you focus on your therapy, not on complicated controls. PERFECT FOR - Individuals who stutter seeking daily speech practice - Supplementing professional speech therapy sessions - Building confidence in speaking situations - Practicing speeches and presentations - Improving overall speech fluency HOW IT WORKS 1. Connect your headphones or earbuds 2. Grant microphone permission 3. Adjust the delay slider to your preferred setting 4. Tap Start Therapy and begin speaking 5. Practice regularly for best results IMPORTANT REQUIREMENTS - Headphones or earbuds are required to prevent audio feedback - Microphone access is necessary for audio capture - Works best in quiet environments CLINICAL FOUNDATION Delayed Auditory Feedback has been studied extensively in speech therapy research and is recognized as an effective tool for reducing stuttering severity. This app brings professional-grade DAF technology to your pocket, making consistent therapy practice more accessible than ever. PRIVACY AND SAFETY Your privacy matters. All audio processing happens on your device in real-time. Nothing is recorded or stored. No audio data is collected, transmitted, or shared with anyone. START YOUR FLUENCY JOURNEY TODAY Whether you are working with a speech therapist or practicing independently, this app provides the tools you need to work toward more confident, fluent speech. Download now and take the first step toward improved communication. Note: This app is designed as a therapeutic tool and practice aid. For comprehensive stuttering treatment, we recommend working with a qualified speech-language pathologist alongside using this app.

About

StutterFlow Stuttering Therapy

This app offers daily speech practice using Delayed Auditory Feedback (DAF) to help individuals who stutter speak more smoothly. It includes tailored exercises for specific sounds and sentences, habit-building features, and progress tracking. The tool is designed for personal practice alongside professional therapy.

Highlights
  • Delayed Auditory Feedback (DAF) modes
  • Sound and word practice exercises
  • Sentence and phrase practice
  • Daily habit building with streaks and medals
  • Progress tracking and statistics
  • Personalized content based on user goals
Features
Read full description

StutterFlow is a daily speech-practice companion for people who stutter. It is built around DAF — Delayed Auditory Feedback — a technique studied since the 1950s that plays your own voice back through headphones with a short delay. Many people find that this naturally slows speech and helps it flow more smoothly, with fewer blocks and repetitions. This is a practice tool, not a cure, and it does not replace consultation with a speech-language pathologist. Use it alongside therapy or as a daily way to keep your speech moving. WHAT'S INSIDE DAF Modes Choose a delay that fits how you speak today — from a light, barely-noticeable 50 ms up to a deeper 200 ms for focused sessions. Put on AirPods or wired headphones, tap a mode, and speak naturally. Sound Practice Train the sounds that trip you up — P, T, K, R and more. Each sound comes with a simple technique, a clear tip, and a set of words to work through at your own pace. Sentence Gym Move from single sounds to full phrases and sentences. Pair it with DAF to carry smoother speech into real, everyday talking. Build a Daily Habit Streaks, medals and a practice calendar help you show up every day — because consistency is what makes the method work. See Your Progress Simple stats show how your practice adds up week by week, so you can feel the momentum. Made for You Tell us whether you're an adult, a teen, or a parent practising with a child, which sounds are hardest, and your goal — everyday speech, public speaking, or support between therapy visits. StutterFlow tailors the materials around your answers. PRIVATE BY DESIGN Your microphone is processed only on your iPhone. Your voice never leaves your device, and there are no accounts to create. STUTTERFLOW PRO A free trial unlocks the full course — every sound and sentence, streaks and medals, stats and reminders. Continue monthly or yearly, or unlock lifetime access with a single one-time purchase. Cancel anytime in iPhone Settings. Note: subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel your subscription in iPhone Settings → Apple ID → Subscriptions. Medical disclaimer: StutterFlow is a self-practice tool and does not replace the consultation, diagnosis, or treatment of a qualified speech-language pathologist. Privacy Policy: https://stutterflow.com/en/privacy Terms of Service: https://stutterflow.com/en/terms

Screenshots

Stuttering Therapy (DAF)1 screens
StutterFlow Stuttering Therapy4 screens

Verdict

The call

The clearest difference is in-app purchases: Stuttering Therapy (DAF) at none against StutterFlow Stuttering Therapy's 3. Stuttering Therapy (DAF) also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). On price and ads 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. StutterFlow Stuttering Therapy sells 3 in-app purchases, starting at $9.99 per month. Stuttering Therapy (DAF) asks for nothing beyond the download.

Scorecard4 real differences · 6 level
Stuttering Therapy (DAF) versus StutterFlow Stuttering Therapy: the parameters behind the verdict, then further details
ParameterStuttering Therapy (DAF)StutterFlow Stuttering Therapy
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews100.0% of reviews—
Number of ratings—1 — better
Update frequency—Every 9 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better17.0
Further details — not scored
Size15 MB8 MB
Age rating4+4+
Developerziad aljohaniAleksandr Chizhevskiy

Customer experience

Stuttering Therapy (DAF)

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

StutterFlow Stuttering Therapy

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Stuttering Therapy (DAF)

No in-app purchases

3 purchases

StutterFlow Stuttering Therapy

Subscriptions2
  • Monthly Subscription3 Days trial$9.991 Month
  • Yearly Subscription3 Days trial$39.991 Year
One-time1
  • Lifetime Access$69.99

Questions

Is Stuttering Therapy (DAF) free?
Stuttering Therapy (DAF) is free to download, with no in-app purchases.
Is StutterFlow Stuttering Therapy free?
StutterFlow Stuttering Therapy is free to download, with in-app purchases available.
Do Stuttering Therapy (DAF) or StutterFlow Stuttering Therapy have ads?
Neither Stuttering Therapy (DAF) nor StutterFlow Stuttering Therapy shows ads.

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