Comparison

Communication Buttons vs Modu

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

Head to head
About

Communication Buttons

This app offers a simple way to practice augmentative communication. Customize buttons with pictures and voice recordings to express words, phrases, or even songs. It's designed to demonstrate cause and effect and facilitate spontaneous communication.

Highlights
  • Customizable buttons
  • Picture customization
  • Voice recording
  • Multiple button layouts (1, 2, 4, 6)
  • Cause and effect demonstration
Read full description

Communication Buttons is THE app for simple augmentative communication. Choose 1 button, or sets of 2, 4 and 6 to use for touch communication. Each button can be customized with a picture and will accommodate voice recording. “Hello!” – and you’re spontaneously communicating, demonstrating cause and effect. State “yes,” or “no,” sing a song or tell a story. Keep a lookout for additional versions with special options.

About

Modu

Features
Read full description

Read Chinese stories, understand unfamiliar words, and build vocabulary from what you read. Modu combines graded reading, a tap-to-lookup dictionary, and spaced-repetition review in one app. Choose a graded story or import your own EPUB and TXT books. Tap unfamiliar words for pinyin and meanings, save vocabulary in context, and review it later. READ WHAT INTERESTS YOU • Explore a library of graded retellings of public-domain stories. • Import EPUB and TXT books to read with built-in learning tools. • Generate AI stories based on your selected topic and level, with vocabulary you are due to review. • Follow RSS feeds. Available article text depends on the source; some feeds provide summaries only. UNDERSTAND AS YOU READ • Tap words for pinyin, meanings, and measure words. • Use AI explanations to explore a word in the context of a sentence. • Translate sentences and paragraphs into English on your device, or read with a bilingual chapter view. • Listen to text with read-aloud tools. REMEMBER WORDS IN CONTEXT • Save vocabulary from your reading and review it with spaced-repetition flashcards. • Mark words as known to focus highlighting on unfamiliar vocabulary. • Track your reading and vocabulary progress, and export your vocabulary. OFFLINE READING AND YOUR ACCOUNT Read and save books on your device as a guest, without creating an account. Books already on your device and core reading tools work offline. On-device translation requires an initial language-model download. AI features and natural online voices require an internet connection. Sign in to back up your vocabulary. Modu Plus also syncs reading progress and other learning data across devices. Imported book files remain on your device; import the same books on another device to continue reading there. FREE + MODU PLUS Free features include reading, dictionary lookup, on-device translation, bilingual reading, vocabulary review, book imports, RSS, the story library, and basic read-aloud. Limited AI explanations and story generation are included. Modu Plus adds higher AI usage allowances, natural multi-voice read-aloud, and additional learning-data sync. AI and natural-voice usage limits apply. See the in-app purchase screen for available plans and current allowances. Start with a story, and build your Chinese one reading session at a time. Terms of Use (EULA): https://modu-ai-proxy.zhouxuehan101.workers.dev/terms Privacy Policy: https://modu-ai-proxy.zhouxuehan101.workers.dev/privacy

Screenshots

Communication Buttons4 screens
Modu4 screens

Verdict

The call

The clearest difference is price: Modu at Free against Communication Buttons's $2.99. Modu also leads on update cadence (weekly vs every 37 months). Communication Buttons's advantage is iOS requirement (11.0 vs 15.5). On 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

CostPrice · In-app purchases · Ads · Monetization

Modu is free to download; Communication Buttons costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Communication Buttons ships an update every 37 months, Modu weekly. The most recent releases landed on June 4, 2026 and September 29, 2026 respectively.

Scorecard3 real differences · 6 level
Communication Buttons versus Modu: the parameters behind the verdict, then further details
ParameterCommunication ButtonsModu
Price$2.99Free — better
Rating2.5 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 37 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better15.5
Further details — not scored
Size30 MB147 MB
Age rating4+4+
DeveloperPreferred Mobile Applications, LLC雪寒 周

In-app purchases

None

Communication Buttons

No in-app purchases

None

Modu

No in-app purchases

Questions

Is Communication Buttons free?
Communication Buttons costs $2.99, with no in-app purchases.
Is Modu free?
Modu is free to download, with no in-app purchases.
Do Communication Buttons or Modu have ads?
Neither Communication Buttons nor Modu shows ads.
Which is updated more often, Communication Buttons or Modu?
Communication Buttons ships an update every 37 months, and Modu weekly. Most recently, Communication Buttons was updated on June 4, 2026 and Modu on September 29, 2026.

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