# 4' 33" vs IMSLP

The clearest difference is price: IMSLP at Free against 4' 33"'s $0.99. IMSLP also leads on update cadence (every 10 days vs every 11 months) and ratings volume (513 vs 13). 4' 33"'s advantage is in-app purchases (none vs 1) and iOS requirement (9.0 vs 13.0). On rating, review sentiment, ads and device support there is nothing between them.

IMSLP is free to download; 4' 33" costs $0.99 up front. IMSLP sells 1 in-app purchase, starting at $3.99 per month. 4' 33" asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.5 for 4' 33" against 4.6 for IMSLP. That said, the two scores are not equally well evidenced: IMSLP has 513 ratings behind it against 13, so its average is the more settled of the two. Written reviews are what separate them: 64% of 4' 33"'s written reviews are positive against 70% of IMSLP's.

4' 33" ships an update every 11 months, IMSLP every 10 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 4' 33" | IMSLP |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [4.5 (13 ratings)](https://appshunter.io/ios/app/4-33-john-cage/id808378692/reviews) | **[4.6 (513 ratings)](https://appshunter.io/ios/app/imslp/id1373671782/reviews)** |
| Number of ratings | 13 | **513** |
| Positive reviews | 64.3% of reviews | **70.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 10 days** |
| Monetization | Paid | **Freemium** |
| Size | 70 MB | 232 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Larson Associates](https://appshunter.io/developer/553864921) | [Project Petrucci LLC](https://appshunter.io/developer/1373671781) |

## What reviewers say

### 4' 33"

[App page](https://appshunter.io/ios/app/4-33-john-cage/id808378692)

Experience and share a unique musical performance. Explore over 2,500 existing renditions of a conceptual piece. This app allows you to create and contribute your own silent performance.

**Highlights:** Create performances, Share performances, Listen to existing performances, Explore 2,500+ renditions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### IMSLP

[App page](https://appshunter.io/ios/app/imslp/id1373671782)

Access a vast digital library of classical music scores on your iOS device. Enjoy full access to commercial recordings, instant downloads, and new uploads with a membership subscription. Support the music community while exploring a comprehensive collection.

**Highlights:** Browse IMSLP/Petrucci Music Library, View musical scores, Access commercial recordings, Instant downloads, Access new uploads instantly, Membership subscription benefits

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Membership Subscription | $3.99 | per month |

**What reviewers like**

- 🚀 Integrated IMSLP library
- 👍 Well-made app
- 👍 Game changer for musicians
- 👍 Indispensable for professionals and amateurs
- 👍 Fantastic offering

**What reviewers complain about**

- 🐛 Crashes when zooming in and annotating
- 💰 Money grabbing with constant subscription prompts
- 🐛 Frequent crashes and freezes
- 🐛 Annotation issues and lost data
- 🐛 Battery drain on iPad

**Reported bugs**

- Crashes when opening scores
- Scores disappearing from library
- Login issues and lost data
- Incompatibility with older devices after updates
- Annotation issues causing loss of data

**Requested features**

- Predictive text for score annotations
- Ability to restore original zoom settings
- Metric to indicate device performance during page turns
- Folder-like organization system
- Color wheel and custom pen/highlighter options


## Frequently asked questions

### Is 4' 33" free?

4' 33" costs $0.99, with no in-app purchases.

### Is IMSLP free?

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

### Which has better reviews, 4' 33" or IMSLP?

IMSLP is rated higher. 4' 33" averages 4.5 out of 5 from 13 ratings, while IMSLP averages 4.6 from 513 ratings.

### Do 4' 33" or IMSLP have ads?

Neither 4' 33" nor IMSLP shows ads.

### Which is updated more often, 4' 33" or IMSLP?

4' 33" ships an update every 11 months, and IMSLP every 10 days. Most recently, 4' 33" was updated on October 24, 2026 and IMSLP on October 25, 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.*