Flexspeak AAC vs LispApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Flexspeak AAC
This app provides augmentative and alternative communication (AAC) for individuals who have difficulty speaking. It offers multilingual support, AI-powered prediction, and extensive customization options to facilitate clear and efficient communication.
- Multilingual support (Spanish, Vietnamese, Nepali, Mandarin)
- AI prediction for sentence completion
- Easy vocabulary customization
- Remote editing and group sharing
- Extensive image library
- Seamless auto-sync across devices
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Experience communication with Flexspeak – the cutting-edge augmentative and alternative communication (AAC) app for people who cannot speak or have difficulty speaking. FREE 30-day trial - includes voice! COMMUNICATE YOUR WAY - Access multiple languages including Spanish, Vietnamese, Nepali, and Mandarin - Use intuitive AI prediction and quick customization features - Select words to create messages and add custom vocabulary with ease POWERFUL FEATURES - Multilingual Support: Switch between languages effortlessly - Remote Editing & Group Sharing: Quickly share folders - AI Prediction: Transform partial phrases into complete sentences with AI - Easy Customization: Personalize your vocabulary to fit your needs - Seamless Auto-Sync: Access your settings across all devices - Extensive Image Library: Express yourself with symbols and photos - In-App Translations: Translate buttons to other languages with one tap DESIGNED FOR DIVERSE NEEDS - Designed for individuals with autism, Down syndrome, cerebral palsy, and non-speaking individuals - User-friendly interface makes communication efficient and accessible Join the growing Flexspeak community and explore new possibilities for self-advocacy, expression, and connection. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
LispApp
This app offers interactive exercises and games to help children and teenagers practice and improve the pronunciation of the /s/ sound. Developed with speech-language pathologists, it follows proven therapeutic methods for effective home practice.
- Interactive /s/ sound exercises
- Auditory bombardment
- Listening for /s/ discrimination
- Oral motor skill practice
- Shaping /s/ sound production
- Syllable and word practice
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Start learning the /s/ sound today with LispApp’s interactive exercises! LispApp is a mobile application designed to support speech therapy and to be used for practice at home. The app has been developed together with American speech-language pathologists. Both the content and structure follow effective methods used in speech therapy for practicing the /s/ sound. LispApp is suitable for children of all ages, from 3 years old up to the teenage years. However, we recommend that an adult and child use LispApp together – this way the adult can support the child when needed, while also spending quality time learning together. The structure of LispApp: Auditory bombardments – First, we learn what the /s/ sound is like. The child listens to many model words where /s/ appears in different positions. Listening for /s/ – Next, the child practices recognizing whether /s/ appears in a word or not. This strengthens awareness of the sound. Oral motor exercises – Then we practice tongue and mouth motor skills, making it possible to produce the /s/ sound at all. These exercises strengthen tongue control and airflow. Making the /s/ sound – Fourth, we start shaping the /s/ sound through the /t/ sound (t → tsss → s). This helps the child find the correct tongue placement and airflow. /s/ in syllables – After that, we move to syllable practice. The child works on using /s/ in simple syllables such as sa, si, su, as, is, us. /s/ in words – The final section is placing /s/ into words in different positions, as well as practicing common consonant blends. The app includes a variety of fun activities for practicing speech. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: LispApp at 5.0 against Flexspeak AAC's 4.2. LispApp also leads on iOS requirement (13.0 vs 15.1). Flexspeak AAC's advantage is ratings volume (5 vs 1). On price, 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
Both are free to download. Flexspeak AAC sells 3 in-app purchases, starting at $9.99 per month and LispApp sells 1 in-app purchase, starting at $34.99 per month. Whichever you choose, the download price is not the number that matters.
LispApp holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Flexspeak AAC has 5 ratings behind it against 1, so its average is the more settled of the two.
Flexspeak AAC ships an update weekly, LispApp every 11 days. Both last shipped on November 4, 2026.
| Parameter | Flexspeak AAC | LispApp |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Weekly — better | Every 11 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 254 MB | 145 MB |
| Age rating | 12+ | 4+ |
| Developer | Flexspeak | ArraTreeni Oy |
In-app purchases
Flexspeak AAC
- Monthly subscription$9.991 Month
- Yearly subscription1 Month trial$99.991 Year
- Lifetime$299.99
LispApp
- LispApp monthly subscription.$34.991 Month









