Resonance vs Casterly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Resonance
This app maps your listening habits by tracking your GPS route in real-time during playback. It visualizes your journeys with markers for playback actions and allows you to scrub through your timeline or animate your route. Discover your listening trends, organize your podcasts, and enjoy offline playback.
- GPS route tracking during playback
- Interactive map visualization
- Route animation and timeline scrubber
- Customizable playback speeds
- Offline listening with downloads
- Podcast organization and playlists
- On-device data storage
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Has this ever happened to you....? You're talking to a friend about a great podcast you listened to. Problem is, you can't remember what it was called. However, you DO remember you listened to it while on a roadtrip back in 2016. That's where Resonance comes in. Check out your route history, navigate to the date of the roadtrip, find the podcast, share with your friend! Play any podcast and Resonance maps your route in real time with GPS. See where you walked, drove, or commuted while listening — all visualized on an interactive map with start, stop, pause, and podcast-change markers. Scrub through your timeline or animate your route at 60x speed. LISTEN YOUR WAY - 9 playback speeds from 0.5x to 3x - Customizable skip forward and back intervals - Sleep timer with gentle fade-out - Per-podcast settings for skip intro, skip outro, and playback speed - Background playback with lock screen and Control Center controls - Queue with drag-to-reorder, playlists, and downloads for offline listening MAP YOUR LISTENING - GPS route tracking during active playback - Interactive maps with start, stop, pause, and podcast-change markers - Route animation and timeline scrubber - Routes grouped by day with distance, areas visited, and duration - Reverse geocoding turns coordinates into real place names KNOW YOUR HABITS - Listening streaks, milestones, and personal records - Daily, weekly, and hourly trend charts - Genre breakdown, completion rates, and top podcasts - Full session history with duration and playback speed STAY ORGANIZED - Subscribe to podcasts from the iTunes catalog - Custom playlists and an Up Next queue - Rate and review episodes and podcasts - Download episodes for offline playback - Favorites surface on your personalized home screen YOUR DATA, YOUR DEVICE - 100% on-device storage — no accounts, no servers, no analytics - Zero third-party SDKs - Export your data anytime as JSON, CSV, or OPML - Import from backups or migrate from other apps - Location permission is requested only when needed, never at launch, and is off by default
Casterly
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Your podcasts, nothing else. Casterly is a clean, retro-inspired podcast player for people who just want to listen. No suggested shows. No algorithmic noise. No cluttered feeds trying to tell you what to hear next. No personal data collected. Just your podcasts, ready to play. Everything you need - Search, browse and subscribe to unlimited podcasts - Download episodes for offline playback - Auto-download new episodes from your subscribed shows - Native Apple Watch companion app with complication - New episode notifications - turn them on or off for each show individually - Save episodes to revisit later - Chapter support - AirPlay support - iCloud sync across your devices - Home screen widget with playback controls - Manually control storage limits Unlock the full experience with Casterly Pro which gives you: - CarPlay support for hands-free listening on the road - Variable playback speed - Sleep timer - Import/export OPML files for easy migration - Add any podcast directly via RSS feed, perfect for indie and niche shows - Helps support a one-person indie app studio Privacy policy: https://sodiumstudio.com/casterly-privacy Terms of use: https://sodiumstudio.com/casterly-terms Proudly made in New England
Screenshots
Verdict
The clearest difference is in-app purchases: Resonance at none against Casterly's 1. On price, update cadence, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Casterly sells 1 in-app purchase, starting at $9.99 per year. Resonance asks for nothing beyond the download.
Resonance ships an update every 2 weeks, Casterly weekly. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.
| Parameter | Resonance | Casterly |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 5 MB | 15 MB |
| Age rating | 4+ | 12+ |
| Developer | Nostios LLC | Sodium Studio, LLC |
In-app purchases
Resonance
No in-app purchases
Casterly
- Casterly Pro$9.991 Year








