Castbox Creator Studio
- Free allowance
- 'There is no limit on uploading storage (total) for a channel.' Per-file cap 400 MB, from a help page last updated 7 years ago ('Updated: 7 years ago') — the 400 MB figure is stale and should be treated as unverified.
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- email?placeholder, not evidence; card unknown, phone unknown
- Binding limit
- per-object-cap400 MB per file
- Evidence
- inferred3 sources; reasoned from other evidence
- Freshness
- stale on 2026-11-21checked 2026-10-21 (inherited); stale on 2026-11-21
| Free tier | 'There is no limit on uploading storage (total) for a channel.' Per-file cap 400 MB, from a help page last updated 7 years ago ('Updated: 7 years ago') — the 400 MB figure is stale and should be treated as unverified. unit MB; metered on stored-bytes |
|---|---|
| Price | none stated |
| Limits |
400 MB per file (2019-era doc); accepted WAV/MP3/MP4/AAC/M4A. No retention or bandwidth figure published anywhere. |
| Identity | email (inferred, not read) not published |
| Egress | Not published; no egress charge surfaced in any Castbox creator doc. |
| Per-object cap | 400 MB per file (400000000 bytes) |
| Retention | not stated |
| Interface | unknown wrapper-only |
| Tooling | Creator Studio web dashboard only; no API. Castbox is primarily a player, so its hosting is a sideline. |
| Composes with | Unlimited channels x unlimited episodes, if the 'no limit on total storage' line still holds. Multiple accounts are email-only. |
| Reliability | Unverifiable. The hosting doc carries no date beyond 'Page updated' and the file-type doc says 'Updated: 7 years ago'. |
| Parsed numbers |
|
Evidence 3
| date | source | what it proved |
|---|---|---|
| 2026-10-21 | sites.google.com/castbox.fm/castbox-help-center/podcasters/g | part of the text of Free tier, above |
| 2026-10-21 | helpcenter.castbox.fm/portal/en/kb/articles/file-types-when- | 'the maximum file size is 400M'; 'Updated: 7 years ago' |
| 2026-10-21 | source not published | probe: GET castbox.fm/rss/3678725 -> 302 -> castbox.fm/404.html (no public enclosure path found) |
Unknown values 5
- egress metered: egress metering was not published
- interface: the access interface was not established
- per object cap notes: the field may be stated in a source that was not read
- retention notes: the field may be stated in a source that was not read
- retention stated: the field may be stated in a source that was not read