# MIDI Opener vs Spectrolite

The clearest difference is rating: Spectrolite at 4.8 against MIDI Opener's 3.9. Spectrolite also leads on ads (none vs shown) and review sentiment (83% vs 64%). MIDI Opener's advantage is update cadence (every 10 days vs every 8 months). On price, ratings volume, in-app purchases and monetization model there is nothing between them.

Both are free to download. MIDI Opener sells 13 one-off in-app purchases and Spectrolite sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Spectrolite holds the better App Store score, 4.8 against 3.9. Both are backed by a comparable volume of ratings — 85 and 51 respectively. Written reviews point the same way: 64% of MIDI Opener's written reviews are positive against 83% of Spectrolite's.

MIDI Opener ships an update every 10 days, Spectrolite every 8 months. Both last shipped on September 23, 2026.

## The numbers

| Metric | MIDI Opener | Spectrolite |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (85 ratings)](https://appshunter.io/ios/app/midi-opener/id1029373282/reviews) | **[4.8 (51 ratings)](https://appshunter.io/ios/app/spectrolite/id1480240180/reviews)** |
| Number of ratings | **85** | 51 |
| Positive reviews | 64.5% of reviews | **83.3% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 10 days** | Every 8 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 334 MB | 1 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MartianRover, LLC](https://appshunter.io/developer/1282183383) | [Waxing Wave](https://appshunter.io/developer/392942046) |

## What reviewers say

### MIDI Opener

[App page](https://appshunter.io/ios/app/midi-opener/id1029373282)

This app is a powerful and modern MIDI player designed for musicians, learners, and creators. It offers visual playback, tempo and key control, and advanced track management. Import custom soundbanks and enjoy features like synchronized lyrics and a 3D visualizer.

**Highlights:** Visual MIDI playback, Tempo and key control, Advanced track controls, 128 General MIDI instruments, Built-in effects, Custom soundbanks, Synchronized lyrics, 3D visualizer

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tip | $0.99 | one-time |
| Full Upgrade Discount | $0.99 | one-time |
| Remove Ads | $1.99 | one-time |
| Change Tempo | $1.99 | one-time |
| Change Tempo and Key | $1.99 | one-time |
| All Access Upgrade | $2.99 | one-time |
| Track Controls | $2.99 | one-time |
| Super Tip | $4.99 | one-time |
| MIDI Out | $4.99 | one-time |
| Practice Pack | $4.99 | one-time |
| Full Upgrade | $4.99 | one-time |
| Premium Upgrade | $4.99 | one-time |
| All Access | $7.99 | one-time |

**What reviewers like**

- 👍 Simple and easy to use
- 🎶 Good sounding instruments
- 🚀 Handles instrument changes well
- ✨ Free to use
- ✅ Plays MIDI files effectively

**What reviewers complain about**

- 🐛 Crashes when changing SoundFonts (iOS 26)
- 🐛 Cuts off beginning of songs
- 🐛 Sustained notes treated as staccato
- 💸 Charging for basic features
- 📉 Poor sound quality for some instruments

**Reported bugs**

- Sustained notes are treated as staccato notes.
- Cuts off the beginning of the song.
- Kicked out of the app when clicking on another SoundFont.
- Crashes when changing SoundFonts (iOS 26).
- Bass drum is too quiet for metal music.

**Requested features**

- Adjust individual track volumes
- Zoom in/out
- Select region to play
- Export features (WAV, MP3, FLAC)
- Playlist functionality


### Spectrolite

[App page](https://appshunter.io/ios/app/spectrolite/id1480240180)

This app visualizes sound in real-time using various spectrogram types. Explore detailed audio data with intuitive touch controls and adjustable parameters. An optional purchase unlocks advanced measurement tools.

**Highlights:** Real-time spectrogram visualization, Constant-Q, linear, and mel frequency scales, Full human hearing frequency range, Intuitive touch panning and zooming, Adjustable gain, Q, and other parameters, Pro version: grids, scales, spectrum view, tap-to-measure

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |


## Frequently asked questions

### Is MIDI Opener free?

MIDI Opener is free to download, with in-app purchases available.

### Is Spectrolite free?

Spectrolite is free to download, with in-app purchases available.

### Which has better reviews, MIDI Opener or Spectrolite?

Spectrolite is rated higher. MIDI Opener averages 3.9 out of 5 from 85 ratings, while Spectrolite averages 4.8 from 51 ratings.

### Do MIDI Opener or Spectrolite have ads?

MIDI Opener shows ads; Spectrolite does not.

### Which is updated more often, MIDI Opener or Spectrolite?

MIDI Opener ships an update every 10 days, and Spectrolite every 8 months. Most recently, MIDI Opener was updated on September 23, 2026 and Spectrolite on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*