ChordMapMidi vs Radio Stream Player
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ChordMapMidi
This app is a MIDI controller for exploring musical chords and progressions in major and minor keys. It sends note information to other synthesizer apps on your device, making it a portable tool for musicians and educators.
- Explore chords and progressions
- Major and minor keys
- MIDI controller functionality
- Sends note information to synth apps
- Portable music tool
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ChordMapMidi allows you to explore chords and chord progressions in both major and minor keys, one finger tap at a time. Note: ChordMapMidi is a MIDI controller. It doesn't create sound on its own. It sends note information to synthesizer apps you have on your device. ChordMapMidi is useful for songwriters, MIDI musicians, music educators... especially in places where the only instrument you have is the phone in your pocket. Have fun exploring chords and progressions!
Radio Stream Player
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Important: This app does not provide a station list. You add only legally licensed streams, for which you are responsible. No download, no recording, no geo-circumvention. Features: • Save and organize your own stream URLs • Favorites and Recently Played • Now Playing with track info (if provided by station) • CarPlay support: fast browsing and control • Stable playback during network changes • Folders for better organization • Stream URL validation before saving • Background playback • Bilingual: German & English License Notice: Please only add streams that are legally authorized for playback in your country. Privacy: No personal data is processed for advertising purposes. All data remains local on your device.
Screenshots
Verdict
The clearest difference is price: Radio Stream Player at $0.99 against ChordMapMidi's $3.99. ChordMapMidi's advantage is iOS requirement (16.6 vs 18.6). On update cadence, 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
ChordMapMidi costs $3.99 and Radio Stream Player $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ChordMapMidi ships an update every 8 months, Radio Stream Player every 6 months. The most recent releases landed on October 23, 2026 and October 18, 2026 respectively.
| Parameter | ChordMapMidi | Radio Stream Player |
|---|---|---|
| Price | $3.99 | $0.99 — better |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 52.9% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 8 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.6 — better | 18.6 |
| Further details — not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Malcolm Mugglin | CHRISTIAN VOLLMER |
In-app purchases
ChordMapMidi
No in-app purchases
Radio Stream Player
No in-app purchases
Questions
Is ChordMapMidi free?
Is Radio Stream Player free?
Do ChordMapMidi or Radio Stream Player have ads?
Which is updated more often, ChordMapMidi or Radio Stream Player?
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