Modizer vs Calm Loop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Modizer
Listen to music from classic computers and consoles, supporting over 1100 formats. Access extensive music databases, manage your collection with playlists and archives, and enjoy high-quality MIDI playback with lyrics. Features include background playback, visualizations, and a built-in web browser.
- Supports over 1100 music formats
- High-quality MIDI playback with lyrics
- Access to music databases (Modland, HVSC, ASMA)
- Built-in web browser with FTP/HTTP downloads
- Playlist and archive support
- Multiple visualizations
- Background playback
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Modizer is a multiformat modules & chiptunes player which allows you to listen to computers and consoles music (ZX Spectrum, C64, Amstrad CPC, Atari ST, Amiga, PC, GB, GBA, NDS, NES, SNES, N64, SMS, Genesis/Megadrive, PcEngine, PSX, Saturn, Dreamcast, Arcade, ...). Modizer provides also high quality MIDI playback. Minimum requirement is a device running iOS 15.6 or more. Optimized for retina display. Based on multiple high quality playback engines and using either the FTP server, the builtin WEB browser or the integrated Modland, HVSC & ASMA databases you can discover or listen again to the best music from the videogames (8/16/32bits era) and demoscene history. Discover some real gems from famous people like Chris Huelsbeck, Jochen Hippel, Purple Motion, Lizardking, Audiomonster or Rob Hubbard, ... Main features: -Large compatibility (more than 1100 formats) thanks to multiple playback engines : Amiga and PC modules, Atari ST/Amstrad CPC, C64, Nintendo/Sega/Nec/Sony and even more ... -Midi + Lyrics support (info screen). -Direct internet access to Modland, HVSC, ASMA, VGMRips, P2612, Snesmusic, SMS Power collections & more. -Built-in Web browser allowing FTP/HTTP downloads, bookmarks and support of ZIP,GZ,LZH & RAR archives. -Built-in FTP server over WIFI connection : upload your music files with a simple FTP client. -Airplay -Playlists support. -Archives support : zip, gz, lha/lzh, 7z, rar, rsn. -Cover support (png/jpg/gif). Covers can be downloaded within Modizer using the webbrowser & "copy" image. -Search function (in local files/playlists/Modland/HVSC). -Rating & play counter of files. -Multiple visualisations : Milkdrop presets, patterns, 2D&3D spectrums, oscilloscopes, ... -Background playback & remote controller. -Highly configurable behaviour. Disclaimer: Internet accesses to the Modland, HVSC & ASMA libraries are provided as an as-is service, guarantee for availability and/or functionality is not given. Use this application at your own risk.
Calm Loop
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Calm Loop plays steady sounds for sleep: white noise, rain, fan, brown noise and pink noise. Mix two sounds, set a sleep timer that fades out, and turn the screen off. The sound keeps playing. Some sounds are included. The rest come with Calm Loop Pro, a one-time unlock with no subscription, and every Pro sound has a preview so you can listen first. SOUNDS Rain in the woods, distant thunder, soft vacuum, ocean, wind, airplane cabin, fan breeze, brown noise, pink noise, white noise, forest after dark, gentle heartbeat, rain and fireplace, and a slow breathing rhythm. These are some of the 46 sounds, sorted into Nature, Everyday and Noise. MIX TWO SOUNDS Rain under thunder, a fan with brown noise, ocean with wind. Each layer has its own volume, plus a master volume. Save a mix with a name and it's ready tomorrow night. Mark the ones you use most as favorites. A SLEEP TIMER THAT FADES OUT Pick 15, 30, 45, 60, 90 or 120 minutes, or set your own time. At the end the sound fades out slowly instead of cutting off. KEEPS PLAYING WITH THE SCREEN OFF Calm Loop plays in the background, and you can pause it from the lock screen. LANTERN NIGHT LIGHT Turn the screen into a soft night light. Choose a light style, like a lantern, a candle or a moon lamp, pick a color and set how bright it glows. Useful for a 3am feed or a late trip to the kitchen without switching on a lamp. FOR THE NURSERY Set a maximum volume in settings, so the sound in the baby's room stays at or below the level you picked. MUSIC, STORIES AND WINDING DOWN Original ambient music for bedtime, plus bedtime stories and short relaxation scripts, read aloud. The stories and relaxation scripts come with Calm Loop Pro. MAKE IT YOURS Record a sound you already know, like your own fan at home, trim it and use it in a mix. A bedtime reminder on the weekdays you choose tells you when it's time to start winding down. WORKS OFFLINE Every sound comes with the app, so it plays without a connection, on a plane or in a room with bad signal.
Screenshots
Verdict
The clearest difference is update cadence: Modizer at monthly against Calm Loop's every 2 months. On price, 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
Both are free to download. Modizer sells 3 one-off in-app purchases and Calm Loop sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Modizer ships an update monthly, Calm Loop every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Modizer | Calm Loop |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (91 ratings) — better | — |
| Positive reviews | 82.1% of reviews | — |
| Number of ratings | 91 — better | — |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 361 MB | 180 MB |
| Age rating | 17+ | 4+ |
| Developer | YoyoFR | Future Software Solutions S.R.L. |
Bugs and requests
Modizer
Reported bugs
6 issues- Crashes when viewing playlists
- Playlist not refreshing after deleting songs
- SPC music looping issues
- FLAC playback broken in recent update
- SID track playback issues after update
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- Favorites playlist not working as expected
Requested features
9 requests- Fade length setting
- WSR (Wonderswan) format support
- FLAC support
- More frequent updates
- UI customization options
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- Ability to backup/restore playlists
- Cloud storage integration
- Infinite loop option for NSF files
- Reduced volume for oscilloscope view
Calm Loop
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Modizer
- Modizer small tip$1.99
- Modizer medium tip$4.99
- Modizer large tip$9.99
Calm Loop
- Calm Loop Pro$3.99









