# unrealBook Mobile vs hapjam

The clearest difference is price: hapjam at Free against unrealBook Mobile's $4.99. hapjam also leads on rating (5.0 vs 4.4) and update cadence (every 3 weeks vs every 2 months). unrealBook Mobile's advantage is ratings volume (80 vs 4). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

hapjam is free to download; unrealBook Mobile costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

hapjam holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: unrealBook Mobile has 80 ratings behind it against 4, so its average is the more settled of the two.

unrealBook Mobile ships an update every 2 months, hapjam every 3 weeks. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | unrealBook Mobile | hapjam |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [4.4 (80 ratings)](https://appshunter.io/ios/app/unrealbook-mobile/id714881996/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/hapjam/id6799201363/reviews)** |
| Number of ratings | **80** | 4 |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Size | 27 MB | 5 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Aron Nelson](https://appshunter.io/developer/353420800) | [hapjam](https://appshunter.io/developer/6799201365) |

## What reviewers say

### unrealBook Mobile

[App page](https://appshunter.io/ios/app/unrealbook-mobile/id714881996)

Carry your entire PDF music library on your iPhone. This portable reader allows you to view, mark up, and organize your sheet music. Seamlessly integrate with your existing music software for a convenient practice and performance tool.

**Highlights:** View PDF music files on iPhone, Scrolling Set List view, Markup music with pens and highlighter, Supports Airturn pedals, Link audio files to charts, Dropbox file download

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


### hapjam

[App page](https://appshunter.io/ios/app/hapjam/id6799201363)

Discover live music happening near you, from bars and breweries to patios and wineries. See who's playing now and tonight, filter by vibe, and get real-time updates on schedules and set times.

**Highlights:** Real-time venue schedules, Discover local performers, Filter venues by vibe, Follow favorite bands/venues, Customizable vibe searches, Get venue set times and directions

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

**In-app purchases:** none


## Frequently asked questions

### Is unrealBook Mobile free?

unrealBook Mobile costs $4.99, with no in-app purchases.

### Is hapjam free?

hapjam is free to download, with no in-app purchases.

### Which has better reviews, unrealBook Mobile or hapjam?

hapjam is rated higher. unrealBook Mobile averages 4.4 out of 5 from 80 ratings, while hapjam averages 5.0 from 4 ratings.

### Do unrealBook Mobile or hapjam have ads?

Neither unrealBook Mobile nor hapjam shows ads.

### Which is updated more often, unrealBook Mobile or hapjam?

unrealBook Mobile ships an update every 2 months, and hapjam every 3 weeks. Most recently, unrealBook Mobile was updated on October 3, 2026 and hapjam on October 8, 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.*