Lexico Articulation vs AAT Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lexico Articulation
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Learn how to pronounce and practice consonant sounds in the English language with Lexico Articulation. This engaging app has been created by experienced speech pathologists for children and adults to improve the clarity of pronunciation by practicing individual target sounds. Practicing is fun with over 1500 flashcards and a variety of appealing ways to exercise. This flexible learning tool offers: detailed explanations on sound formation to help parents 22 target main sounds with initial, medial or final positions of words as well as target sound blends 50-300 flash cards for each target sound exercises to identify number of syllables and target sound position in words flexibility to work with varying combinations of picture, text and sound option to record and rate the students Lexico Articulation is recommended for: - speech therapy for language impairment, for dysarthria or aphasia therapy - home exercises for students A detailed log is used to track student progress and can be shared by mail. Lexico Articulation includes the L- target sound. All other target sounds can be purchased individually or a complete package with various in-app purchase options.
AAT Plus
This tool offers a comprehensive suite of screeners and assessments for articulation, including quick screeners, full assessments, sentence-level tests, and stimulability tests. It is designed to aid in evaluating speech sound production.
- Quick screener
- Full assessment
- Sentence level assessment
- R Screener
- Stimulability tests
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Elevate your speech therapy practice with the Articulation Assessment Toolkit Plus (AAT Plus)—the most comprehensive, dynamic, and intuitive criterion-referenced articulation assessment designed specifically for Speech-Language Pathologists. Whether you are determining baselines, monitoring progress, or writing highly targeted IEP goals, the AAT Plus transforms complex speech sound data into clear, actionable clinical insights. Moving far beyond simple raw scores, this tool provides a multi-dimensional analysis of your student's speech sound production, right from your iPad. KEY CLINICAL FEATURES Comprehensive Assessment Modules Quick Consonant Screener: Rapidly assess all English consonants in initial, medial, and final positions. Full Assessment: Evaluate all consonants plus a comprehensive Vowels Analysis (Singletons, Diphthongs, Tongue Advancement/Height, and Lip Rounding). Specialized R-Screener: Tackle the complex /r/ phoneme with a dedicated module targeting prevocalic /r/, vocalic /r/ (ar, er, ear, etc.), and R-blends. Features specialized visual badging for distortions ("dis") and gliding ("gl"). Sentence Screener: Evaluate connected speech to identify coarticulation errors and patterns that only appear in continuous dialogue. Advanced Analytics Dashboard Instantly view detailed color-coded breakdowns of your student's speech sound breakdown across six critical categories: Position in Word: Initial, Medial, and Final. Manner of Articulation: Fricatives, Plosives, Nasals, Glides, etc. Place of Articulation: Bilabial, Alveolar, Velar, Palatal, etc. Voicing Features: Differentiates voiced vs. voiceless consonant accuracy. Word-Level Breakdown: A complete phonetic transcript of target words, highlighted errors, and clinical notes. Error Types & Phonological Processes: Automatically identifies active error patterns (e.g., Final Consonant Deletion, Cluster Reduction) and provides built-in developmental suppression ages. Dynamic Stimulability Testing Automatically imports all missed targets from your assessment into an interactive stimulability dashboard. Test isolated sounds and specific word positions with built-in auditory/visual modeling prompts. Watch target statuses update in real-time (Untested, Stimulable, Not Stimulable) to effortlessly select your next therapy targets. Developmental Sound Profile Instantly overlay your student's assessment data onto standard developmental acquisition norms (adapted from Sander, 1972). Perfect for parent consultations to visually demonstrate whether an error is developmentally appropriate or requires intervention. Professional Reporting & Exporting Generate beautiful, multi-page PDF clinical reports with a single tap. Capture subjective Intelligibility Ratings (Single Word & Conversational) via intuitive sliders. Add custom clinical recommendations directly to the final report. Seamlessly share via Apple AirPrint, Email, or export directly to the Smarty Ears Therapy Report Center (TRC). Why SLPs Love AAT Plus: While standardized tests are required for initial eligibility, the AAT Plus is your essential companion for functional treatment planning. Because it is a criterion-referenced tool, you can use it continuously for progress monitoring, dynamic assessment, and baselining without the validity restrictions of standardized tests. Empower your clinical decision-making and streamline your report writing with the AAT Plus!
Verdict
The clearest difference is update cadence: AAT Plus at monthly against Lexico Articulation's every 16 months. Lexico Articulation's advantage is iOS requirement (9.0 vs 15.0). On price, ads, in-app purchases and device support 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. Lexico Articulation sells 10 one-off in-app purchases and AAT Plus sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
Lexico Articulation ships an update every 16 months, AAT Plus monthly. The most recent releases landed on September 14, 2026 and September 5, 2026 respectively.
| Parameter | Lexico Articulation | AAT Plus |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 16 months | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPad | iPad |
| Requires iOS | 9.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 174 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | Pappy GmbH | Smarty Ears |
In-app purchases
Lexico Articulation
- TH-SOUND$0.99
- NG-SOUND$1.99
- CH-SOUND$2.99
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- F-SOUND$3.99
- SH-SOUND$3.99
- K-SOUND$3.99
- S-SOUND$3.99
- P-SOUND$3.99
- R-SOUND$5.99
- ALL-SOUND$69.99
AAT Plus
- Monthly Unlimited Testing$5.991 Month
- Yearly Unlimited Tests$37.991 Year
- Purchase 5 tests$5.99





