BlackBox vs Rev Voice Recorder: Transcription Service vs Private Recorder
Rev Record & Transcribe is the recording app for Rev's transcription service: it records, transcribes live with AI, lets you order human-verified transcripts, and summarises with AI templates, with files synced to Rev. BlackBox is a private recorder that runs all day or on a schedule and transcribes on the phone with no account — no human transcripts and no AI summaries.
We make BlackBox, so read this as informed rather than neutral. Every Revdetail below comes from its own store listing or help docs (linked in References); where a listing doesn't say, the table says so rather than guessing. Spot something out of date? Tell us.
BlackBox vs Rev: feature by feature
| Feature | BlackBox | Rev |
|---|---|---|
| Platforms | ✓iPhone and Android | ◐iPhone app plus web; no current Rev recorder found on Google Play (US) |
| Keeps recording with the screen off | ✓Yes — screen off, in your pocket, in other apps | –Not stated in listing |
| Built for all-day (24/7) recording | ✓Yes — press record once and it runs all day | –Not stated in listing |
| Scheduled start and stop | ✓Yes — separate weekday and weekend windows | –Not stated in listing |
| Splits long recordings into files automatically | ✓Yes — one file per hour, days auto-archived | –Not stated in listing |
| Recording length limit | ✓No app-imposed limit; runs while the OS allows | –Not stated in listing |
| Storage per hour of audio | ✓≈14.4 MB per hour | –Not stated in listing |
| Recording format | ✓AAC, 32 kbps mono, 16 kHz (tuned for speech) | –Not stated in listing |
| Works without an account | ✓No account | ✕Account-based; files sync across devices |
| Where your audio is kept | ✓On your phone; optional backup to your own Files / Drive folder | ✕Synced to Rev |
| Transcription | ✓Yes — on-device, nothing uploaded | ✓Live AI transcripts, or order human transcripts |
| Speaker labels | ✓Yes — on-device | –Not stated in listing |
| AI summaries | ✕No | ✓Yes — AI templates and chat with transcripts |
| Works offline | ✓Yes — recording and transcription | –Not stated in listing |
| In-app lock (Face ID / passcode) | ✓Yes — Face ID, Touch ID or passcode | –Not stated in listing |
| Records phone calls | ✕No — records the room, not the call line | ✕No — call recording not supported |
| Works with just your phone | ✓Yes — no extra device | ✓Yes |
✓ yes · ◐ partly or with conditions · ✕ no · – not stated in the listing. Background recording on any app runs only while iOS or Android allows it; a phone call takes the microphone from every recorder.
What Rev users complain about
Themes from 1–2★ App Store reviews of Rev Record & Transcribe we read in October 2026, paraphrased.
Billing and cancelling
The largest theme: reviewers say they kept being charged after cancelling, or couldn't find how to change plan.
Source: App Store reviewsUploads that fail
Some describe a meeting recording that failed to upload, discovered only afterwards, and video uploads from the photo library not working.
Source: App Store reviewsAI transcript accuracy
Several reviewers found AI transcripts missing large parts of the audio.
Source: App Store reviewsAccess to old recordings
One reviewer says a separate Rev call-recording app was shut down and they lost access to recordings stored there.
Source: App Store reviewsWhen to pick Rev instead
- You need human-verified transcripts for legal, research or media work.
- You want AI templates that summarise or extract information, and to analyse many files at once.
- You collaborate on transcripts with a team across mobile and desktop.
When BlackBox fits better
- You don't want recordings uploaded anywhere — BlackBox transcribes on the phone with no account.
- You want to record all day or on weekday and weekend schedules.
- You use Android.
- You want long days split into hourly files, and the library behind Face ID or a passcode.
Frequently asked questions
Is the Rev voice recorder on Android?
We couldn't find a current Rev recording app on Google Play in the US; the App Store listing is current. BlackBox is on both stores.
Does BlackBox offer human transcription?
No. BlackBox transcribes automatically on your phone. If you need human-verified transcripts, Rev offers them.
Which is more private?
Rev processes your files on its service so they can be transcribed and synced. BlackBox has no account and keeps audio and transcripts on your phone unless you export them.
References
- Rev: Record & Transcribe — App Store listing — Rev.com, checked Oct 25, 2026
- Rev: Record & Transcribe — App Store ratings and reviews — Apple, checked Oct 25, 2026
- BlackBox features and FAQ — BlackBox
More comparisons
Go deeper
Try BlackBox next to Rev
Record all day or on a schedule, browse by the hour and transcribe on-device — no account, and your audio stays on your phone. Test it on your device first: background limits vary by phone.