4champ vs RetroPlayer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
4champ
Access a vast Amiga music database, search by composer, group, or module name, and download tracks for offline playback. Create playlists and enjoy an endless stream of music with the built-in radio feature.
- Amiga music database access
- Search by composer, group, module name
- Download modules for offline playback
- Build local module playlists
- Amiga music radio stream
- Search module internal texts
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4champ connects you to the most comprehensive Amiga Music database in the internet, Amiga Music Preservation. You can do searches in the catalog by composer, group or module name, or module internal texts. Download mods for playback later offline and build playlists from your local modules. 4champ radio feature lets you listen to endless stream of music effortlessly. 4champ is also in Mastodon! Follow @4champ@mastodon.social for for news about app, forthcoming releases, service updates and other related stuff.
RetroPlayer
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RetroPlayer brings the iconic sounds of classic computers to your device. Experience authentic chiptune music from the legendary sound chips that defined the golden age of computing – the Commodore 64's SID chip, the Amiga's Paula, and more. **CLASSIC MACHINES** Browse music collections organized by the computers that created them: • Commodore 64 (1982) – SID 6581/8580 chip with 3 voices • Atari XL (1983) – POKEY chip with 4 voices • Atari ST (1985) – Yamaha YM2149 chip • Amiga (1985) – Paula 4-channel PCM audio Each machine features its own distinct visual identity with period-authentic imagery and brand gradients. **CURATED PLAYLISTS** Dive into carefully selected collections featuring the best of retro computer music: • HVSC Top 100 – The most beloved Commodore 64 tracks of all time • Legendary composers: Martin Galway, Rob Hubbard, Ben Daglish, Jeroen Tel, Chris Huelsbeck, and many more • Classic game soundtracks from Wizball, Last Ninja, Commando, Sanxion, and hundreds of other titles **REAL-TIME VISUALIZATION** Watch your music come to life with a built-in oscilloscope that displays audio waveforms in real time. The phosphor-trail visualization evokes the aesthetic of vintage CRT monitors, providing both a visual treat and a window into the raw audio synthesis. **COMPREHENSIVE MUSIC LIBRARY** Access thousands of tracks from established retro music archives: • HVSC (High Voltage SID Collection) – Commodore 64 • ASMA (Atari SAP Music Archive) – Atari 8-bit • SC68 – Atari ST • MODLAND – Amiga MOD files **RICH METADATA** Every track includes detailed information: • Composer name and original release year • Music format (SID, MOD, etc.) • Track duration • Source collection and machine **PLAYBACK FEATURES** • Background audio playback • System media controls integration • Lock screen metadata display • Create and manage your favorites collection • Powerful search across the entire catalog • Seamless streaming playback **BEAUTIFUL INTERFACE** RetroPlayer features a modern interface that pays homage to the aesthetics of classic computers while feeling perfectly at home on Apple platforms. Each machine's signature colors and design language shine through in carefully crafted gradients and transitions. **FOR ENTHUSIASTS & NEWCOMERS** Whether you grew up with these machines or you're discovering chiptune music for the first time, RetroPlayer offers an authentic way to experience the sounds that inspired generations of electronic musicians. From the punchy bass of SID chip classics to the sample-based richness of Amiga MOD tracks, explore the creative brilliance of composers who pushed 8-bit and 16-bit hardware to its absolute limits.
Screenshots
Verdict
The clearest difference is in-app purchases: 4champ at none against RetroPlayer's 4. 4champ also leads on update cadence (every 3 months vs every 5 months). On price, ads, device support and iOS requirement 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. RetroPlayer sells 4 one-off in-app purchases. 4champ asks for nothing beyond the download.
4champ ships an update every 3 months, RetroPlayer every 5 months. The most recent releases landed on November 1, 2026 and October 29, 2026 respectively.
| Parameter | 4champ | RetroPlayer |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (44 ratings) — better | — |
| Positive reviews | 89.4% of reviews | — |
| Number of ratings | 44 — better | — |
| Update frequency | Every 3 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 8 MB | 85 MB |
| Age rating | 12+ | 4+ |
| Developer | Aleksi Sitomaniemi | Michael Lauer |
In-app purchases
4champ
No in-app purchases
RetroPlayer
- Buy Me a Coffee$1.99
- Buy me Lunch$4.99
- Support Development$9.99
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- Generous patron$19.99








