By 121 Gigawatz
Report updated Apr 23, 2026
CastKeeper
For podcast enthusiasts who prioritize content ownership, long-term archiving, and advanced AI-assisted listening features.
Overview · Full Intel report in progress
CastKeeper is an established news app that is a paid app.
What is CastKeeper?
Current Momentum
v2026.1
NEW: You can now enable Enhance Voices in Settings to bring out voices in your favorite podcasts. IMPROVED: Performance has been tuned so you can get to listening and archiving your podcasts even faster.
Competition
Rivals identification in progress
7-Day Rank Pulse 🇺🇸
NewsRating Pulse 🇺🇸
Gathering signals...
What makes this app unique?
How Is The App's Momentum Right Now?
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What Are The Key Features?
Enables users to save audio and video podcasts directly to iCloud Drive or S3-compatible storage providers.
Provides Apple Intelligence-generated summaries, automated chapter creation, one-tap transcription, and translation into over 15 languages.
Supports full video playback with picture-in-picture, speed controls, and seamless switching between video and audio-only modes.
Identifies dynamic ad insertion and sponsors to help users navigate episode content more effectively.
How much does it cost?
Who Built It?
Providing podcast enthusiasts with tools for permanent content ownership and AI-driven insights through a privacy-first, subscription-free model.
Portfolio
1
Apps
Who is 121 Gigawatz?
121 Gigawatz differentiates itself through a commitment to content sovereignty, positioning its products as a hedge against the ephemeral nature of subscription-based media platforms. Their structural advantage lies in a 'private-by-design' architecture that offloads storage costs to the user's personal cloud while providing high-value AI processing. This strategy signals a move toward decentralized media management for power users who prioritize long-term access over algorithmic discovery.
Who is 121 Gigawatz for?
- Privacy-conscious podcast power users
- Collectors seeking to avoid subscription models
- Platform-controlled feeds
Portfolio momentum
Launched a single flagship title in April 2026, currently in its initial release and update cycle with one update recorded.
Analysis in progress, available soon
What do users think recently?
Analysis in progress, available soon
Analysis in progress, available soon
What is the competitive landscape for CastKeeper?
How's The News Market?
How does it evolve in the News market?
| Chart | Rank | Change |
|---|---|---|
| Paid | #15 | ▼4 |
Strategic analysis coming soon
SWOT, key takeaways & outlook
The outtake for CastKeeper
Key Takeaways
CastKeeper is a utility-focused podcast player that shifts the value proposition from streaming access to permanent personal ownership of media files.
Where Is It Heading?
Trend analysis
Available very soon