Castmagic vs PrimePost
Castmagic
castmagic.ioPrimePost
primepost.appSide by side
| Figure | Castmagic | PrimePost |
|---|---|---|
| Price from | $1.58/mo | $19/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | Yes | — |
| API | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · AI Content Repurposing Tools | 8.0 (#8) | 8.0 (#10) |
| API | Castmagic describes a REST API for importing recordings, retrieving transcripts, and fetching generated content, and says the Claude connector can access a library. | The Business plan includes API access to all seven formats, with a stated limit of 1,000 requests per day per key. |
| Integrations | The maker lists Zoom, Loom, Google Drive, RSS, Zapier, and imports from services including YouTube, Spotify, Apple Podcasts, TikTok, Instagram, Vimeo, Twitch, Reddit, and Wistia. | The privacy policy lists Google OAuth for authentication, Stripe for payments, Anthropic and OpenAI for AI processing, and Vercel for hosting. |
| Purpose | Castmagic turns long-form audio and video into transcripts and ready-to-use content such as show notes, summaries, blogs, social posts, and newsletters. | PrimePost transforms long-form content into multiple platform-optimized formats. |
| Security | Its privacy policy says data is encrypted at rest and in transit, stored on secure cloud servers, and protected with access controls and regular security assessments and penetration tests. | The homepage says account content and outputs are stored encrypted and are never used to train AI models. |
| Support | The pricing page lists live chat support on Hobby, Starter, and Team, with priority support for Team and dedicated support for Business & Scale. | The Business plan includes priority support, and the homepage provides [email protected] for questions. |
Plans
Castmagic
- Hobby$19 a year
- Starter$579 a year
- Business & Scale$699 a month
- Team$1,669 a year
In their own words
Castmagic
Castmagic converts long-form audio and video into transcripts and drafts such as show notes, summaries, blogs, social posts, and newsletters. Transcription supports more than 60 languages, with speaker labels, timestamps, translation, and SRT, VTT, PDF, and DOCX exports. Recurring prompts, brand voice settings, and custom prompts can generate a content set when recordings arrive. Studio creates image carousels, captioned clips in 9:16, 1:1, or 16:9 formats, and audiograms. Its content strategist answers questions across recordings, cites source moments, and drafts weekly content plans. The library connects with Zoom, Loom, Google Drive, RSS, and Zapier, and imports from YouTube, Spotify, Apple Podcasts, TikTok, Instagram, Vimeo, Twitch, Reddit, and Wistia. A REST API imports recordings and retrieves transcripts and generated content; a Claude connector can access a library. The iOS app records into a space or captures voice memos. Castmagic runs on web, iOS, and API. Plans start at $19/mo (annual), with no free plan. Listed hour allowances are 30 for Hobby, 100 for Starter, and 400 for Team.
PrimePost
PrimePost is a content transformation tool from Block Nexus Labs. It takes blog posts, articles, transcripts, and newsletters and produces seven channel-specific formats: X posts, LinkedIn posts, email newsletters, Instagram captions, blog summaries, YouTube descriptions, and Facebook posts. The homepage says all seven formats can be ready in 30 seconds. Each transformation is saved so you can return to the source and generated versions. Visitors can make one free transformation per device without signing up. The Free plan costs nothing and includes three transformations per month, all seven output formats, standard quality, and history for the last 10 transformations. Pro costs $19 a month and adds unlimited transformations, premium quality, full history, and priority processing. Business costs $49 a month and adds API access, custom Brand Voice settings, export, unlimited history, and priority support. Business API keys allow 1,000 requests per day.