Comparison

Avaz FreeSpeech vs Spongeball Billy

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

Head to head
About

Avaz FreeSpeech

This app helps individuals with language impairments practice and develop English grammar skills. Users rearrange picture tiles to form grammatically correct sentences, visually exploring sentence structure and word properties. It's designed for learners of all levels, including those with special needs or learning English as a second language.

Highlights
  • Build sentences with picture tiles
  • Visual grammar exploration
  • Supports tenses and sentence forms
  • Customizable prediction levels
  • Over 2,000 Symbolstix symbols
  • Errorless modeling for grammar
Features
Read full description

FreeSpeech helps anyone with a language impairment practice and develop grammar skills! Drag and rearrange picture tiles, and FreeSpeech will convert them into a perfectly grammatical English sentence. Explore how tenses, sentence forms, parts of speech, and other grammatical properties change the structure of English -- and it's all visual! FreeSpeech is the perfect app for anyone who is learning the English language - whether you are - A person with special needs, such as autism, dyslexia and hearing impairments - An ELL student, trying to make sense of English grammar - Someone who loves languages and likes to explore them! Developed by an interdisciplinary team including SLPs, educators, and researchers with over 100 years of collective experience, FreeSpeech is the most advanced language learning technology currently on the App Store. The technology behind FreeSpeech was the subject of a TED talk by its creator Ajit Narayanan which has been viewed more than one million times. The development of FreeSpeech, combining engineering with generative linguistics, earned the team recognition as one of the world's Top 35 Innovators from MIT Technology Review. AS SEEN ON TED BY 1M+ VIEWERS: http://go.ted.com/CW6u "A powerful new app designed to help children of all learning levels and language abilities develop grammatically correct sentences... A welcome addition for anyone with young writers that struggle with arranging sentences or who have a language impairment that makes it frustrating to communicate." - SmartAppsForKids FreeSpeech is unique because it's the only app in the world that predicts grammar. You can throw a bunch of picture tiles at it, and the app will automatically figure out a grammatically correct sentence from them. - It's possible to manipulate words, tenses and structure as if you were manipulating building blocks. - The app lets teachers and learners model/recast/contrast various grammar rules pictorially, all the while speaking out correct English. - A teacher or therapist can configure how much prediction FreeSpeech does, and fade away its capabilities as a student develops confidence. FreeSpeech is based on solid research, and builds language by: - EXPANDING: Prompting users with questions to expand their sentences; - SCAFFOLDING: Intelligently predicting words that they are likely to use; - CONTRASTING: Visually modeling tense and sentence modifiers; - RECASTING: Automatically inserting prepositions and articles as needed; and - ERRORLESS MODELING: Automatically predicting grammar, to assemble a map of pictures into a grammatically correct English sentence. Scientific trials validating the efficacy of FreeSpeech have been presented at leading conferences in linguistics and special education. FreeSpeech features more than 2,000 symbols from Symbolstix, and is ideally suited to use alongside other AAC, articulation and education apps that use these lovely symbols. Additionally, you can customize the vocabulary with 20,000+ Symbolstix symbols. Download FreeSpeech & learn English language skills today! Please email us at support@freespeechapp.com with any comments, questions or suggestions about FreeSpeech. *Pricing plan - Auto Renewable Subscription* 1 month auto renewing - 9.99 USD 6 months auto renewing - 59.99 USD 1 year auto renewing - 99.99 USD Link to privacy policy - www.avazapp.com/privacy Link to Terms of use - www.avazapp.com/terms-of-use/ -Payment will be charged to iTunes Account at confirmation of purchase -Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period -Account will be charged for renewal within 24-hours prior to the end of the current period -You can manage your subscriptions and turn off auto-renewal by going to your Account Settings after purchase -Any unused portion of the free trial period will be forfeited when you purchase a subscription Symbols used in this app are © 2016 SymbolStix LLC.

About

Spongeball Billy

This app offers a magical spongeball companion with narrated stories, coloring pages, and interactive games. It provides a free set of activities and allows for additional content purchases to expand the adventure.

Highlights
  • Narrated stories
  • Coloring pages
  • Interactive games
  • Magic spongeball character
  • Downloadable content
Features
Read full description

Spongeball Billy is a magic Spongeball come to life. He is a friend and companion to everyone. He brings magic and adventure. Spongeball Billy stories, coloring pages and activities. Three short narrated stories about SpongeBall Billy, 9 coloring pages and 3 game/activities, all for free! In-app purchase for additional 3 stories, 9 coloring pages and 3 more activities/games.

Screenshots

Avaz FreeSpeech4 screens
Spongeball Billy4 screens

Verdict

The call

The clearest difference is rating: Spongeball Billy at 5.0 against Avaz FreeSpeech's 3.5. Spongeball Billy also leads on review sentiment (100% vs 64%) and iOS requirement (12.2 vs 15.0). Avaz FreeSpeech's advantage is update cadence (every 2 months vs every 24 months) and ratings volume (12 vs 3). On price, ads, in-app purchases and monetization model 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. Avaz FreeSpeech sells 3 in-app purchases, starting at $4.99 per month and Spongeball Billy sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Spongeball Billy holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 12 and 3 respectively. Written reviews point the same way: 64% of Avaz FreeSpeech's written reviews are positive against 100% of Spongeball Billy's.

UpkeepUpdate frequency

Avaz FreeSpeech ships an update every 2 months, Spongeball Billy every 24 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard5 real differences · 5 level
Avaz FreeSpeech versus Spongeball Billy: the parameters behind the verdict, then further details
ParameterAvaz FreeSpeechSpongeball Billy
PriceFreeFree
Rating3.5 (12 ratings)5.0 (3 ratings) — better
Positive reviews64.0% of reviews100.0% of reviews — better
Number of ratings12 — better3
Update frequencyEvery 2 months — betterEvery 24 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.2 — better
Further details — not scored
Size452 MB54 MB
Age rating4+4+
DeveloperPrathiba SwaminathanRichard Wittmann

Customer experience

Avaz FreeSpeech

All ratings12 ratings
Positive58.3%
Neutral16.7%
Negative25.0%
Written reviews25 reviews
Positive64.0%
Neutral16.0%
Negative20.0%

Spongeball Billy

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

3 purchases

Avaz FreeSpeech

Subscriptions3
  • Premium Access: Pics & Voices$4.991 Month
  • Premium Access: Pics & Voices$39.991 Year
  • Premium Access: Pics & Voices$59.996 Months
1 purchases

Spongeball Billy

One-time1
  • Spongeball Billy Bundle 1$2.99

Questions

Is Avaz FreeSpeech free?
Avaz FreeSpeech is free to download, with in-app purchases available.
Is Spongeball Billy free?
Spongeball Billy is free to download, with in-app purchases available.
Which has better reviews, Avaz FreeSpeech or Spongeball Billy?
Spongeball Billy is rated higher. Avaz FreeSpeech averages 3.5 out of 5 from 12 ratings, while Spongeball Billy averages 5.0 from 3 ratings.
Do Avaz FreeSpeech or Spongeball Billy have ads?
Neither Avaz FreeSpeech nor Spongeball Billy shows ads.
Which is updated more often, Avaz FreeSpeech or Spongeball Billy?
Avaz FreeSpeech ships an update every 2 months, and Spongeball Billy every 24 months. Most recently, Avaz FreeSpeech was updated on November 2, 2026 and Spongeball Billy on November 3, 2026.

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