Predictable vs Sentence Ninja
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Predictable
This text-to-speech application assists individuals with communication challenges by offering smart word prediction, customizable phrases, and diverse access methods. It supports multiple languages and integrates with various voice options for personalized communication.
- Smart word prediction
- Customizable phrases and categories
- Multiple access methods (head tracking, switch access)
- Multi-language support (43 languages)
- Diverse speech and voice options
- Appearance customization
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Predictable is a multi-award winning text-to-speech app for people with conditions such as ALS/MND, autism, cerebral palsy, Down's syndrome, and more. It aims to make it easier and quicker to communicate, using a range of access methods, rate enhancement features and customisation options. Word Prediction Using smart word prediction technology, the app makes speaking out a text-based message easy. Predictable learns from your pattern of use and predicts what you will type next, making typing easier and more efficient. Phases and categories Save and organise phrases that you need quick access to in a simple grid format. Further customise your phrases by adding symbols, images, audio recordings, links and more. Shortcuts Choose from a wide range of useful and exciting features such as notes, share, translate, chatGPT and draw to customise your keyboard screen to include features that you want to use. Attach these to keyboard keys, hot corners, head tracking gestures or external keyboard shortcuts. The possibilities are endless! Multi Language Switch between any of our 43 languages* to create your personalised bilingual set up. You are able to choose a primary and secondary language and seamlessly transition between both on the go, with appropriate keyboards and voices selected for both. Languages supported include: Arabic, Bangla, Bulgarian, Catalan, Chinese, Croatian, Danish, Dutch, English, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Maithili, Malay, Marathi, Norwegian (Bokmal), Persian, Polish, Portuguese, Punjabi, Romanian, Russian, Slovak, Spanish, Swedish, Tamil, Telugu, Thai, Turkish, Ukrainian, Vietnamese, Gujarati, Urdu, Somali *Some languages only offered with online voices Speech and Voice Options Compatible with standard iOS voices, including the enhanced voices available to download and your iOS personal voice. You can also use your voice-banked voice from ModelTalker, Acapela, SpeakUnique and The Voice Keeper. Accessibility Predictable offers a wide range of access methods and accessibility settings including: Direct touch features to handle accidental selection Screen tap - a scanning method where you touch the screen for selection and/or progression Switch access - accessible via Bluetooth switch box + switches (compatible with Therapy Box Switch Box and RJ Cooper Switch Interface) as well as Head tracking face gestures. Head tracking - use facial recognition to interact with the app with no calibration or extra hardware required. Auditory preview - hear the onscreen text before selection. Scanning - Build your own, is a brand new access method in Predictable. Customise your own scanning method by combining timer, screen tap, switch access and gestures. Appearance Customise the layout and appearance to truly optimise the app to your preferences by changing the layout, font size, colours and more. Different keyboard options (including QWERTY, Ten Key, Apple and Bluetooth) and different templates (including Dark, High Contrast and Low vision) are available to make this customisation clear and simple. Web Platform Log in remotely and manage your settings and grid content from our web platform. The web platform is compatible with the myMessageBanking.com format to make importing easy. Support User guides are available on your app, and on the Therapy Box website. Send any questions to support@therapy-box.co.uk. You can find more about Predictable at https://therapy-box.co.uk/predictable
Sentence Ninja
This app helps users of all ages master sentence structure through a gamified, ninja-themed learning experience. It offers tailored features for families, educators, and speech therapists, with progress tracking and printable resources.
- Ninja-themed progression
- 39 levels of difficulty
- Printable worksheets
- Progress tracking for multiple students
- Clinical customization options
- Evidence-based linguistic hierarchy
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Unlock the power of clear communication with Sentence Ninja! Whether you are a parent supporting your child's first words, an educator managing a diverse classroom, or a Speech-Language Pathologist (SLP) providing clinical therapy, Sentence Ninja is the ultimate tool for mastering sentence structure. Turn learning into an adventure as users progress through a ninja-themed journey, transforming simple phrases into complex, fluent sentences across 39 levels of difficulty. Tailored for Every User For Families & Caregivers Turn Screen Time into Learning Time: Give your child a high-quality educational experience that feels like a game but is backed by clinical science. Fun & Engaging Rewards: Children stay motivated by earning belts in the Belt Dojo and personalized certificates as they master new levels. Easy Home Practice: Use the built-in Homework Portal to print or email fun worksheets that reinforce what your child is learning in the app. For Teachers & School Districts Small Group Ready: Simultaneously support up to 5 students in one session, with each student working at their own unique pace and level. IEP Documentation Made Easy: Detailed data tracking and progress reports simplify documentation and help you monitor growth over time. Classroom Versatility: Perfect for K-5 students, English Language Learners (ELL), and students with diverse learning needs. For Speech-Language Pathologists Evidence-Based Design: Built on a linguistic hierarchy that moves from basic "Subject + Verb" phrases to advanced multi-clause sentences. Clinical Customization: Adjust visual cues, toggle color-coded hints, and modify specific exercises to meet the precise needs of your clients. Comprehensive Integration: Works seamlessly with the Therapy Report Center (TRC) for professional and efficient reporting.
Screenshots
Verdict
The clearest difference is price: Sentence Ninja at $21.99 against Predictable's $159.99. Sentence Ninja also leads on review sentiment (86% vs 68%). Predictable's advantage is update cadence (every 2 months vs every 12 months) and rating (4.5 vs 4.2). On ads, in-app purchases, monetization model and iOS requirement 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
Predictable costs $159.99 and Sentence Ninja $21.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Predictable holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Predictable has 203 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 68% of Predictable's written reviews are positive against 86% of Sentence Ninja's, so the app with the better star average is not the one people write more warmly about.
Predictable ships an update every 2 months, Sentence Ninja every 12 months. The most recent releases landed on September 19, 2026 and August 26, 2026 respectively.
| Parameter | Predictable | Sentence Ninja |
|---|---|---|
| Price | $159.99 | $21.99 — better |
| Rating | 4.5 (203 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 67.7% of reviews | 85.7% of reviews — better |
| Number of ratings | 203 — better | 5 |
| Update frequency | Every 2 months — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 15.5 — better | 15.6 |
| Further details — not scored | ||
| Size | 1.7 GB | 196 MB |
| Age rating | 4+ | 4+ |
| Developer | Prentke Romich Company | Smarty Ears |
Customer experience
Predictable
Sentence Ninja
Bugs and requests
Predictable
Reported bugs
9 issues- App crashes frequently
- Password reset emails not received
- App freezes
- Acapela voice not working
- Cannot copy message to clipboard
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- Twitter integration crashes/invalid token
- Emailing messages causes crash
- Lost Australian Lee voice after update
- Antisemitism in word prediction
Requested features
15 requests- Add child's voices
- Edit size of message window in grid view
- Adjust font size of message window
- Edit color of font or background of individual cells
- Edit individual cells for speaking on touch vs. automatic
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- Add print option
- Allow hiding of settings/edit button without guided access
- Improve transition to phrase banks
- Adjust font size in suggestions
- Enable cursor for editing
- Add user control for saving history (on/off)
- Improve switch access functionality
- Add more male voice options
- Allow customization of keypad size
- Add full stop and comma keys to main keyboard
Sentence Ninja
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Predictable
No in-app purchases
Sentence Ninja
No in-app purchases
Questions
Is Predictable free?
Is Sentence Ninja free?
Which has better reviews, Predictable or Sentence Ninja?
Do Predictable or Sentence Ninja have ads?
Which is updated more often, Predictable or Sentence Ninja?
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