Comparison

Subtle Voicebuds vs Second Brain

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

Head to head
About

Subtle Voicebuds

This app enables voice-first computing by transcribing speech into text across any application, capturing and organizing voice notes, and offering AI chat. It's designed for use with companion hardware that allows for quiet dictation in any environment.

Highlights
  • Whisper dictation in any app
  • Voice notes transcription
  • Searchable and organized notes
  • AI chat integration
  • Encrypted data
  • Voice-first computing
Read full description

Subtle is the companion app for Subtle Voicebuds — a device that hears only you, even at your quietest. Subtle combines dictation, voice notes, and AI chat for a complete voice-first computing experience, letting you run your day with voice. WRITE WITH A WHISPER, IN ANY APP The Subtle keyboard turns your speech into text wherever you type — messages, email, notes, search, no app-switching required. Tap the mic, speak aloud or whisper, and see your words appear. Because the Voicebuds are tuned for your quiet voice, dictation works in a noisy café or a silent library without raising your voice. CAPTURE NOTES AS YOU THINK Record a thought the moment it arrives. Your recordings are transcribed into notes you can search, edit, and organize. Your notes and chats are encrypted in transit and at rest. BUILT FOR LOUD AND QUIET SPACES Traditional earbuds were built for listening. Subtle Voicebuds are built for speaking. The Subtle Voice Engine hears you and nothing else, even in loud environments where voice traditionally fails. Whisper-level dictation means your voice still gets through, even when speaking aloud isn’t an option. The Subtle app requires Voicebuds at this time. Pair your Voicebuds in the app to get started.

About

Second Brain

Read full description

Second Brain is a companion voice recorder for the Second Brain macOS app. Capture voice notes on the go and sync them to your Mac for transcription and AI analysis. The app automatically detects speech and silence (Voice Activity Detection), splits recordings into chunks, and transfers them to your Mac over the local network — no cloud involved. Features: - Voice recording with automatic Voice Activity Detection - Background recording — keeps working when the app is minimized - Live Activity — recording progress on Lock Screen and Dynamic Island - Seamless Mac sync via Bonjour (P2P, no cloud) - Geolocation tagging for recordings - Fully offline — all data stays on your device Pair your iPhone with the Second Brain macOS app to unlock transcription, knowledge extraction, and AI-powered search across all your voice notes.

Screenshots

Subtle Voicebuds4 screens
Second Brain4 screens

Verdict

The call

The clearest difference is iOS requirement: Second Brain at 17.0 against Subtle Voicebuds's 26.0. 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 9 level
Subtle Voicebuds versus Second Brain: the parameters behind the verdict, then further details
ParameterSubtle VoicebudsSecond Brain
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 2 weeks—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad — better
Requires iOS26.017.0 — better
Further details — not scored
Size131 MB21 MB
Age rating17+4+
DeveloperSkywalk Inc.Konstantin Akushev

In-app purchases

None

Subtle Voicebuds

No in-app purchases

None

Second Brain

No in-app purchases

Questions

Is Subtle Voicebuds free?
Subtle Voicebuds is free to download, with no in-app purchases.
Is Second Brain free?
Second Brain is free to download, with no in-app purchases.
Do Subtle Voicebuds or Second Brain have ads?
Neither Subtle Voicebuds nor Second Brain shows ads.

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