Speech to Text vs atrophy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Speech to Text
This app automatically transcribes and summarizes audio and video content, saving you time. It offers AI-powered chat for asking questions and generating action items, all processed locally on your device for maximum privacy.
- Unlimited transcription in 99 languages
- AI summaries and chat
- On-device processing for privacy
- Organize recordings in collections
- Search and share transcripts
- Export audio and transcripts
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Never take notes again. Sono is an on-device AI transcription and summarization app. Whether you need to transcribe meetings, lectures, videos, and more, Sono takes notes for you so you can save time and focus on the discussion. Upload voice notes, audio files, or videos, and Sono will automatically convert speech to text. Sono also supports smart AI summaries and AI chat so you can ask questions, request rewrites, and generate action items. KEY FEATURES: • Unlimited transcription for audio and video in 99 languages • Transcribe voice notes, real-time audio, and video/audio files • AI summaries and chat • Organize recordings in collections • Search transcripts • Copy and share transcripts (TXT, PDF, MD, DOCX, SRT) • Export recordings • Widgets and shortcuts PRIVACY: • We do not collect any user data. Both transcription and AI features run 100% locally, so your data never has to leave your device FAQ: What is the longest transcription supported? We support regular transcription of voice notes, audio files, and video files up to 8 hours long. We support live transcription up to 2 hours long. You can transcribe as many recordings as you would like. Is the app actually fully local? Yes! The app uses local transcription and LLM models, so all transcription and AI features work on-device. A network connection is only required once to download each transcription or AI model. Your data never leaves your device unless you choose to share it. We provide optional iCloud sync to back up your data and sync data between devices. If you have this disabled, your transcriptions will be deleted if you delete the application. We recommend backing up important transcriptions. Why do I have to keep the app open while it is transcribing? The app has to be open during transcription as iOS limits apps from operating in the background for extended amounts of time. If you are unable to run the app at the moment, you can quit and reopen the app at any time. The interrupted recording will automatically start transcribing again. Terms of service: https://piquant-tile-b12.notion.site/Sono-Terms-of-Service-2dc141824eed803cae5ec5531f827eb2?source=copy_link Privacy policy: https://piquant-tile-b12.notion.site/Sono-Privacy-Policy-2dc141824eed80e3ba8bdecf4f55d04a?source=copy_link
atrophy
This app helps you assess how much you rely on AI for judgment. It offers offline diagnostic quizzes to identify AI-generated content, verify claims, and gauge your confidence. Results are presented as a calibration score and a shareable card.
- Offline diagnostic quizzes
- AI content identification
- Claim verification
- Confidence gauging
- Calibration score
- Shareable result card
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Atrophy is a short diagnostic that measures how much of your judgment you've handed to LLMs. It runs entirely offline. No accounts, no servers, no analytics, no third-party SDKs. Everything stays on your device. WHAT IT DOES - A focused calibration quiz: spot AI slop, verify weak claims, explain back what you read, gauge confidence. - A calibration score with a plain-language reading of where you're solid and where you're drifting. - A shareable result card you can save to Photos. WHAT IT DOESN'T DO - No tracking. No advertising IDs. No ATT prompt — there's nothing to track. - No content rented from a server. The drills ship in the app. - No social graph, no leaderboard, no streaks. ATROPHY PRO (Optional Subscription) Unlocks the Practice Pack — additional drills for ongoing calibration. - Monthly: $4.99 / month - Annual: $49.99 / year Subscriptions auto-renew until canceled. Cancel anytime in your Apple ID settings (Settings → Apple ID → Subscriptions). Account is charged for renewal within 24 hours prior to the end of the current period. Payment is charged to your Apple ID account at confirmation of purchase. Privacy policy: https://atrophy-ai.github.io/privacy.html Terms of use: https://atrophy-ai.github.io/terms.html
Screenshots
Verdict
The clearest difference is rating: Speech to Text at 4.4 against atrophy's 3.7. Speech to Text also leads on ratings volume (32 vs 3) and device support (3 vs 1). On price, update cadence, ads and in-app purchases 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. Speech to Text sells 2 in-app purchases, starting at $3.99 per month and atrophy sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
Speech to Text holds the better App Store score, 4.4 against 3.7. That said, the two scores are not equally well evidenced: Speech to Text has 32 ratings behind it against 3, so its average is the more settled of the two.
Speech to Text ships an update weekly, atrophy every 5 days. Both last shipped on November 5, 2026.
| Parameter | Speech to Text | atrophy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (32 ratings) — better | 3.7 (3 ratings) |
| Positive reviews | 76.9% of reviews | — |
| Number of ratings | 32 — better | 3 |
| Update frequency | Weekly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Freemium |
| Devices | iPhone, iPad, Mac — better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 479 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Ju Hee Han | Graham Annett |
Customer experience
Speech to Text
atrophy
In-app purchases
Speech to Text
- Sono Pro Monthly3 Days trial$3.991 Month
- Sono Pro Lifetime$14.99
atrophy
- Atrophy Monthly$4.991 Month
- Atrophy Yearly$49.991 Year









