# ChordMarker vs PDF Locker

The clearest difference is price: PDF Locker at Free against ChordMarker's $4.99. ChordMarker's advantage is in-app purchases (none vs 3) and update cadence (weekly vs every 5 months). On ads, device support and iOS requirement there is nothing between them.

PDF Locker is free to download; ChordMarker costs $4.99 up front. PDF Locker sells 3 in-app purchases, starting at $4.99 per 7 days. ChordMarker asks for nothing beyond the download.

ChordMarker ships an update weekly, PDF Locker every 5 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ChordMarker | PDF Locker |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | Paid | — |
| Size | 12 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [梦阳 许](https://appshunter.io/developer/1783294344) | [Vikram Singh](https://appshunter.io/developer/1800895019) |

## What reviewers say

### ChordMarker

[App page](https://appshunter.io/ios/app/chordmarker-chord-chart-maker/id6739028965)

Create and edit song chord charts with a simple text format. Easily add chords, preview, transpose, and export your song sheets as PDF, image, or text. Ideal for songwriters, musicians, and teachers.

**Highlights:** ChordMark notation for chart creation, Dedicated chord keyboard for fast input, Scan text from images, Instant key transposition, Export as PDF, image, or plain text, iCloud sync across devices

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

**In-app purchases:** none


### PDF Locker

[App page](https://appshunter.io/ios/app/pdf-locker-pdf-wolf/id6745149950)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mobile Pro Access Weekly | $4.99 | per 7 days |
| Mobile Pro Access Yearly | $19.99 | per year |
| Pro Lifetime Unlock | $19.99 | one-time |


## Frequently asked questions

### Is ChordMarker free?

ChordMarker costs $4.99, with no in-app purchases.

### Is PDF Locker free?

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

### Do ChordMarker or PDF Locker have ads?

Neither ChordMarker nor PDF Locker shows ads.

### Which is updated more often, ChordMarker or PDF Locker?

ChordMarker ships an update weekly, and PDF Locker every 5 months. Most recently, ChordMarker was updated on October 15, 2026 and PDF Locker on October 10, 2026.

---

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