DAF Pro vs Speech Pacesetter
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DAF Pro
This app uses delayed auditory feedback to help individuals who stutter or have Parkinson's speak more fluently. By hearing your voice with a slight delay, it naturally slows your speech rate, improving clarity and smoothness. It's designed for personal use and speech therapy sessions.
- Adjustable delay and pitch shift
- Low latency audio
- Background operation
- Speech recording and playback
- Wired and Bluetooth headset support
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DAF Pro helps people who stutter 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 recognized 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 stutter, and it is also used to help people with Parkinson's control their speaking rate. Who It's For * People who stutter or stammer * People with Parkinson's disease * People with dysarthria * People who clutter * Speech-language pathologists, for therapy sessions and home practice Features * Adjustable delay and pitch shift * Very low latency, so short delays stay short * Keeps working in the background and with the screen off * Record and play back your speech * Works with wired and Bluetooth headsets. Bluetooth adds extra delay that varies by headset, so wired headphones work best for short delays. Getting Started Put on headphones, set the delay to around 50–100 ms, press Start and speak. Then adjust until your speech feels slower and steadier. Built by a UK speech and language therapist. One-time purchase: no subscription, no ads, no account needed. Questions or feedback? Contact us at support@speechtools.co
Speech Pacesetter
This app helps users practice clearer, more controlled speech using adjustable visual cues. It's designed for individuals with articulation difficulties and fast speech rates due to neurological conditions or stuttering. Users can select text and pace their reading with a speed-adjustable visual guide.
- Adjustable visual cues for speech pacing
- Syllable or word highlighting
- Library of reading passages
- Customizable reading passages
- Adjustable font size and pause duration
- Choice of backgrounds and fonts
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Practice clearer, more controlled speech with Speech Pacesetter. Speech Pacesetter uses adjustable visual cues to help users practice speaking at a slower, more consistent rate. - Designed specifically for people who have unclear articulation and a fast rate of speech due to stroke, brain injury, acquired stuttering, Parkinson’s Disease or other neurological condition - Suitable for older children who have unclear articulation or who stutter - Allows the user to choose a text and pace their rate of speech with the help of a speed-adjustable visual cue - Highlights each syllable or each word. The user reads each syllable or word aloud as the visual cue appears. ADDITIONAL FEATURES The simple, effective and easy-to-use interface also allows the user avail of the following features: - Built-in library of phonemically-balanced reading passages (The Rainbow Passage, The Grandfather Passage etc) - Built-in functional everyday phrases, short stories, poems and tongue twisters - The option to create and save a library of custom reading passages - Adjustable font size and pause duration on punctuation - A choice of different colored backgrounds and fonts TESTIMONIALS "This affordable app brings a novel way of carrying out pacing therapy for adult speech and language therapists." – Mike Richards, SLT, UK "I've had wonderful success using this app with a lady who has dysarthria due to a stroke." - Carol Winters, SLP "Speech Pacesetter is one of my most used therapy apps! I use it with clients who have a fast speaking rate or slurred speech. I've had amazing results using this app." - Anna Wilson, SLP A UNIQUE WAY TO PACE SPEECH Speech Pacesetter provides a unique way to pace speech and improve speech clarity. See for yourself how effective visual cues can be!
Screenshots
Verdict
The clearest difference is price: DAF Pro at $5.99 against Speech Pacesetter's $17.99. DAF Pro also leads on review sentiment (63% vs 46%) and ratings volume (97 vs 31). Speech Pacesetter's advantage is iOS requirement (15.0 vs 17.0). On rating, update cadence, ads and in-app purchases 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
DAF Pro costs $5.99 and Speech Pacesetter $17.99 up front. Neither carries in-app purchases, so what you see is what you pay.
DAF Pro holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 97 and 31 respectively. Written reviews point the same way: 63% of DAF Pro's written reviews are positive against 46% of Speech Pacesetter's.
Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on November 6, 2026.
| Parameter | DAF Pro | Speech Pacesetter |
|---|---|---|
| Price | $5.99 — better | $17.99 |
| Rating | 4.5 (97 ratings) — better | 4.3 (31 ratings) |
| Positive reviews | 62.7% of reviews — better | 46.2% of reviews |
| Number of ratings | 97 — better | 31 |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #72 — better | #114 |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Speechtools Ltd | Aptus Speech and Language Therapy Limited |
Customer experience
DAF Pro
Speech Pacesetter
In-app purchases
DAF Pro
No in-app purchases
Speech Pacesetter
No in-app purchases







