How BlackBox Keeps Your Storage Clean Automatically
On this page
Recording your whole day sounds like a recipe for a permanently full phone. It isn't — because BlackBox manages storage for you, automatically, end to end. Here's the full lifecycle that keeps a continuous record while keeping your storage clean and compressed.
The storage lifecycle, step by step
Every recording moves through the same hands-off pipeline:
- Hourly files. Instead of one giant recording, each day is split into tidy hourly files — easy to browse, and nothing becomes an unwieldy multi-gigabyte blob.
- Daily auto-archive + compression. When a day completes, BlackBox packages and compresses it, shrinking the footprint while preserving your history.
- Rolling auto-clean. Audio older than a rolling window of about 30 days is automatically cleared, so storage stays flat instead of growing forever.
- Optional auto-export. If you turn it on, completed archives are auto-exported to a folder you control *before* the cleanup — so anything you want to keep is saved for good.
The net effect: your phone holds roughly your last month of compressed audio logs, indefinitely, without you lifting a finger.
Why this design works
| Goal | How BlackBox handles it |
|---|---|
| Don't fill the phone | Rolling 30-day window + compression keeps storage flat |
| Don't lose what matters | Optional auto-export to your own folder |
| Don't make me manage files | Splitting, archiving, cleaning all run automatically |
| Keep it private | Everything on-device by default; you choose any backup folder |
| Find things easily | Hourly timeline + waveform playback |
How much space does it actually use?
Compressed voice audio is small — roughly 30–60 MB per hour depending on quality — so even a rolling month of logs stays modest, and compression keeps it smaller still. For the battery side of all-day capture, see recording all day without draining your battery.
You're still in control
Automatic doesn't mean rigid. You can:
- Delete any recording or whole day yourself, any time.
- Export individual recordings manually whenever you want.
- Turn auto-export on or off and choose its folder.
- Lock the whole library behind Face ID.
Where it all lives
By default everything stays in on-device storage — no account, no upload — and any backup goes only to the folder you pick. See where your recordings are stored for the full picture.
The bottom line
BlackBox keeps your storage clean automatically: hourly files, daily compression, a rolling 30-day auto-clean, and optional auto-export of the keepers. You get a continuous, compressed audio log of your recent life and a phone that never fills up — with zero file management. That's how BlackBox makes all-day recording genuinely practical.
Frequently asked questions
How does BlackBox stop recordings from filling my phone?
It splits each day into hourly files, auto-archives and compresses completed days, and auto-cleans audio older than a rolling ~30-day window. Optional auto-export saves anything you want to keep to your own folder first, so storage stays flat.
Do I have to manage recording files myself?
No. The whole lifecycle — splitting, archiving, compressing, cleaning, and optional exporting — runs automatically. You can still delete or export anything manually whenever you like.
Always-on, on-device and private. Free on iPhone and Android.