Comparison

Side vs Cerebro Keyboard

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

Head to head
About

Side

Features
Read full description

Side-NoteΒ instantly transforms your spoken ideas into organised, actionable text. Speak your thoughts and watch them become clear notes, ready to transform into content, summaries, or task lists. With Side-Note, you can: * Capture ideas instantly with one-tap recording * Get accurate transcriptions in 34 languages * Organize notes with titles, tags, and dates * Transform ideas into blogs, scripts, and custom AI outputs * Create personalized AI transformation styles Who’s This For: Anyone who wants to capture ideas on the go β€” creators, students, professionals, or anyone who needs to remember and organise thoughts quickly. Privacy First:Β Your audio is never stored, and all transcriptions are end-to-end encrypted. Why Side-Note: Stop losing ideas. Stop fighting the blank page. Speak your mind, and let Side-Note handle the rest. Subscription Required: Side-Note is a subscription-based service. All features require an active subscription with flexible weekly, monthly, or yearly plans.

About

Cerebro Keyboard

Features
Read full description

Cerebro is the only keyboard that's not a keyboard. It completely changes the way you write texts and messages. Instead of tapping tiny keys, you just speak. Cerebro is a voice-first keyboard with backwards keyboard compatibility β€” because sometimes you still need to type a quick "ok". Powered by advanced speech-to-text AI, one of the most accurate transcription engines available. Speak naturally, get clean text in under 3 seconds β€” or let AI transform it into the perfect tone. No app switching. No copy-pasting. It just works, everywhere. KEY FEATURES β€’ Voice-First Design β€” Tap the orb and speak. That's it. The keyboard is there if you need it, but you won't. β€’ Works in Every App β€” Cerebro installs as your system keyboard. Use it in Messages, WhatsApp, Notes, Email, Slack, and any app where you type. β€’ Background Flow Sessions β€” Tap the mic and Cerebro starts listening, then switch to other apps. It keeps transcribing in the background so you never lose a thought. β€’ AI Text Transforms β€” Speak naturally, then let AI rewrite your text in any style. Choose from built-in modes like Professional (business tone), Casual (friendly), Concise (removes filler), Clean (profanity filter), and English (translation & grammar fix) β€” plus fun modes like Pirate and Yoda. Create unlimited custom modes with any prompt you want. β€’ Custom Dictionary β€” Add names, technical terms, and specialized vocabulary so Cerebro always gets your words right. β€’ Track Your Time Saved β€” See how much time you save compared to typing. The average user saves over 40 minutes per day. PRIVACY BY DESIGN Your voice stays yours. Audio recordings are deleted immediately on our servers after transcription β€” we never store what you said. Transcribed text and audio recordings are only stored on your device. No keystroke logging. No content tracking. HOW IT WORKS 1. Install Cerebro and enable the keyboard in Settings 2. Switch to the Cerebro keyboard in any app 3. Tap the orb and speak 4. Your words appear as text β€” instantly PRICING Cerebro is free to download and includes 20 transcriptions every month. Cerebro Pro lifts the monthly cap for $5.99 per month or $47.99 per year in the United States. Prices vary by region and are shown in the app before you buy. Cerebro Pro is an auto-renewing subscription. Payment is charged to your Apple ID account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscription in your App Store account settings. Terms of Use (EULA): https://www.cerebro-keyboard.app/terms Privacy Policy: https://www.cerebro-keyboard.app/privacy Stop typing. Start speaking.

Screenshots

Side4 screens
Cerebro Keyboard4 screens

Verdict

The call

The clearest difference is in-app purchases: Cerebro Keyboard at none against Side's 3. Side's advantage is update cadence (daily vs every 6 months) and iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Side sells 3 in-app purchases, starting at $4.99 per 7 days. Cerebro Keyboard asks for nothing beyond the download.

UpkeepUpdate frequency

Side ships an update daily, Cerebro Keyboard every 6 months. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

Scorecard3 real differences Β· 3 level
Side versus Cerebro Keyboard: the parameters behind the verdict, then further details
ParameterSideCerebro Keyboard
PriceFreeFree
Update frequencyDaily β€” betterEvery 6 months
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPod β€” betteriPhone
Requires iOS15.1 β€” better17.0
Further details β€” not scored
Size36 MB4 MB
Age rating4+9+
DeveloperAdam SoutheyAllonsy GmbH

In-app purchases

3 purchases

Side

Subscriptions3
  • Side Note Pro Access (Weekly)$4.997 Days
  • Side Note Pro Access (Monthly)$14.991 Month
  • Side Note Pro Access (Annual)$119.991 Year
None

Cerebro Keyboard

No in-app purchases

Questions

Is Side free?
Side is free to download, with in-app purchases available.
Is Cerebro Keyboard free?
Cerebro Keyboard is free to download, with no in-app purchases.
Do Side or Cerebro Keyboard have ads?
Neither Side nor Cerebro Keyboard shows ads.
Which is updated more often, Side or Cerebro Keyboard?
Side ships an update daily, and Cerebro Keyboard every 6 months. Most recently, Side was updated on September 18, 2026 and Cerebro Keyboard on September 17, 2026.

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