Stackwax vs Mellow FM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stackwax
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Stackwax is the shelf for DJs. You hear a track. You need the BPM, the key, the Camelot code. You need it in your library before the night is over. You want to buy it on vinyl. StackWax does all of it in one tap. Hold your phone up. StackWax identifies the track, detects the BPM and key in real time, gives you the Camelot code, and shelves it directly into your library. Then the library works for you. Sort by BPM, by key, by Camelot. Drag tracks into playing order and sketch your next set before you step behind the decks. When you find something you want on vinyl, tap through to the Discogs listing and buy it without leaving the app. Connect your existing Discogs collection and import your records. Everything in one place, organised the way DJs think. Built for DJs who take music seriously. Works in clubs, record shops, at home, anywhere music is playing. Free to start. No credit card required. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Mellow FM
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Mellow FM is a radio app that automatically plays music suited to your current moment. Time of day, activity, weather, season — the app reads multiple contexts to deliver the perfect soundtrack. Crisp jazz for your morning commute, ambient for late-night work, chill for a rainy afternoon. No need to pick a song or search. Just press play, and music that fits the moment starts flowing. [Context-Aware Selection] Combines time of day, motion detection (walking, running, driving), weather, and season to select the perfect tracks from the Apple Music catalog in real time. [Gets Smarter Over Time] Every skip or full listen teaches the app your preferences. Over time, music gets closer to what you love in the same time and situation. [Simple Gesture Controls] • Tap the logo — Play / Stop • Tap the artwork — Pause / Resume • Swipe left — Skip • Swipe up — Request a song • Swipe down — Settings panel [Song Request] Craving a specific track? Swipe up to open the request panel, search by artist or title, and add it to the queue. [Sleep Timer] Set a timer from 5 to 120 minutes using the slider. Music fades out automatically when you're ready to sleep. [Weather-Based Music (Optional)] Enable "Weather-Based Music" in settings to match your local weather conditions. [Now Playing Support] Control playback from the Lock Screen and Control Center. CarPlay supported. • Requires an active Apple Music subscription for music streaming. • Location access is only requested when Weather-Based Music is enabled. • All personal data stays on your device. Mellow FM is ad-free and tracking-free. A quiet radio that focuses entirely on your music experience.
Screenshots
Verdict
The clearest difference is in-app purchases: Mellow FM at none against Stackwax's 3. Stackwax's advantage is update cadence (every 5 days vs every 2 months) and iOS requirement (15.0 vs 18.0). On price, 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. Stackwax sells 3 in-app purchases, starting at $4.99 per month. Mellow FM asks for nothing beyond the download.
Stackwax ships an update every 5 days, Mellow FM every 2 months. The most recent releases landed on September 24, 2026 and June 26, 2026 respectively.
| Parameter | Stackwax | Mellow FM |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 18 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Martin Allais | Yoshiyuki Koyama |
In-app purchases
Stackwax
- Stackwax Pro Monthly$4.991 Month
- Stackwax Pro Annual$34.991 Year
- Stackwax Pro Lifetime$49.99
Mellow FM
No in-app purchases





