# GHOSTLINE vs Undertone Tuner

The clearest difference is monetization model: Undertone Tuner at free against GHOSTLINE's subscription. Undertone Tuner also leads on review sentiment (100% vs 68%) and rating (5.0 vs 4.6). GHOSTLINE's advantage is ratings volume (354 vs 2). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. GHOSTLINE sells 2 in-app purchases, starting at $5.99 per month and Undertone Tuner sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Undertone Tuner holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: GHOSTLINE has 354 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 68% of GHOSTLINE's written reviews are positive against 100% of Undertone Tuner's.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GHOSTLINE | Undertone Tuner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (354 ratings)](https://appshunter.io/ios/app/ghostline/id6444372551/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/undertone-tuner/id6759796106/reviews)** |
| Number of ratings | **354** | 2 |
| Positive reviews | 68.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Subscription | **Free** |
| Size | 37 MB | 31 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ghostline, Inc.](https://appshunter.io/developer/1654281154) | [Inner Circle](https://appshunter.io/developer/367838600) |

## What reviewers say

### GHOSTLINE

[App page](https://appshunter.io/ios/app/ghostline/id6444372551)

This app helps tattoo artists create perfect stencils quickly and efficiently. It offers AI-driven tools to upscale, sharpen, and customize artwork, eliminating the need for manual tracing. Print stencils at any size with advanced layout technology, saving valuable time for artists.

**Highlights:** AI-driven stencil generation, Artwork upscaling and sharpening, Customizable stencil details, Print-scale technology for any size, Reference tool for visualization, Editing tools (pen, eraser, ruler)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ghostline Unlimited Access | $5.99 | per month |
| Ghostline Unlimited Access | $59.99 | per year |

**What reviewers like**

- 🚀 Saves significant time on stencil creation
- 👍 User-friendly interface and easy to learn
- 💡 Innovative stencil conversion technology
- 📏 Multi-page printing and sizing features
- 🎨 Advanced editing and customization tools

**What reviewers complain about**

- 💰 Subscription model considered overpriced
- 🚫 Paywall immediately upon app opening
- ❌ Free alternatives available with similar features
- 🐛 Occasional gaps in stencil output
- 😕 Confusing stencil output for some users

**Reported bugs**

- Quarter inch gaps appearing in stencil output
- App loses important design details in conversion
- Emphasizes irrelevant details over important ones
- Inconsistent stencil quality on complex designs
- Limited customization options for stencil output

**Requested features**

- One-time purchase option instead of subscription
- Lower subscription pricing ($6/month considered too high)
- Lifetime subscription option under $100
- JPEG file format export option
- Save reference image as separate file


### Undertone Tuner

[App page](https://appshunter.io/ios/app/undertone-tuner/id6759796106)

This tool helps tattoo artists and clients visualize healed tattoos by removing redness and inflammation from fresh ink. It preserves skin tone and tattoo detail, offering precise adjustments and full-resolution export.

**Highlights:** Removes redness from fresh tattoos, Preserves natural skin tone, Maintains tattoo detail, On-device processing, Full-resolution export, Adjustable strength and threshold

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Continue Support | $4.99 | one-time |
| Sustain Support | $12.99 | one-time |


## Frequently asked questions

### Is GHOSTLINE free?

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

### Is Undertone Tuner free?

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

### Which has better reviews, GHOSTLINE or Undertone Tuner?

Undertone Tuner is rated higher. GHOSTLINE averages 4.6 out of 5 from 354 ratings, while Undertone Tuner averages 5.0 from 2 ratings.

### Do GHOSTLINE or Undertone Tuner have ads?

Neither GHOSTLINE nor Undertone Tuner shows ads.

### Which is updated more often, GHOSTLINE or Undertone Tuner?

GHOSTLINE ships an update monthly, and Undertone Tuner monthly. Most recently, GHOSTLINE was updated on October 25, 2026 and Undertone Tuner on October 24, 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.*