RadauApp vs MusicBall
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RadauApp
Transform an old iPhone into a child-friendly music player. It supports Apple Music, MP3s, podcasts, and web radio with a simple, intuitive interface. A parent mode allows for easy media management and content control.
- Plays Apple Music & MP3s
- Supports podcasts and web radio
- Simple, icon-based interface
- Parent mode for media management
- Childproof access lock
- Reuses old devices
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RadauApp – The eco-friendly alternative to kids’ music boxes #Works with iPhone 6s and newer Got an old iPhone lying around? Perfect! With RadauApp, you can turn it into a super simple music box for your little ones – packed with: • Apple Music & your own MP3s • Favorite podcasts • Kid-friendly web radio The interface is intentionally kept simple – no reading skills required. Big tiles, intuitive icons, no distractions. Just tap – and the music plays! Parent Mode included In the protected parent zone, you can: • Manage media (playlists, podcasts, radio stations) • Change cover artwork • Add or remove content All childproofed with a simple access lock. Why RadauApp? • Skip the expensive hardware (like the T-Box) • Reuse devices instead of throwing them away • Full control & privacy – no cloud required
MusicBall
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Drop in a song. Watch a machine get built to play it. MusicBall takes a piece of music and constructs a whole contraption around it — plates, curving rails, spiralling drops. Then a ball falls through the lot, and every note you hear is the ball hitting something. It's oddly hard to stop watching. EVERY SONG GETS ITS OWN MACHINE Change the song and everything changes. A gentle piece grows tall spirals the ball winds slowly down through. A fast one packs tight columns it ping-pongs between. Switch back and forth and you'll never see the same machine twice. YOU'LL START TO SEE THE MUSIC Every note has its own colour, and it keeps that colour wherever it turns up. A few minutes in and you're spotting a melody's repeats on the wall before you hear them come round again. PICK WHO PLAYS THE MELODY Hand the tune to a different part and the whole machine rebuilds around it. Or let the spotlight travel between parts as the piece goes on — the ball slides across to a new rig each time the lead changes. Or run two balls at once, side by side. EVERY HIT LANDS ON THE BEAT The ball never fakes it. It arrives exactly when the note does, every single time — so what you're watching and what you're hearing are the same thing happening. BRING YOUR OWN FAVOURITE Seven classics are built in to get you started: Canon in D, The Entertainer, Turkish March, In the Hall of the Mountain King, Für Elise, Prelude in C and Gymnopédie No. 1. After that, bring in anything you like — your file stays on your phone. FLY THE CAMERA Ride along with the ball, or take over: spin around it, pan across the machine, pinch to take in the whole thing at once. NOTHING TO SIGN UP FOR No account. No ads. No tracking, nothing collected. It works exactly the same in Airplane Mode.
Screenshots
Verdict
The clearest difference is price: RadauApp at Free against MusicBall's $4.99. RadauApp also leads on iOS requirement (15.6 vs 26.0). On ads, in-app purchases 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
RadauApp is free to download; MusicBall costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | RadauApp | MusicBall |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 2 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Jens Becker | 辉 邓 |
In-app purchases
RadauApp
No in-app purchases
MusicBall
No in-app purchases









