# Undertone Tuner vs True Tone Studio

The clearest difference is in-app purchases: True Tone Studio at none against Undertone Tuner's 2. True Tone Studio also leads on update cadence (every 4 days vs monthly). Undertone Tuner's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 26.5). On price and ads there is nothing between them.

Both are free to download. Undertone Tuner sells 2 one-off in-app purchases. True Tone Studio asks for nothing beyond the download.

Undertone Tuner ships an update monthly, True Tone Studio every 4 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Undertone Tuner | True Tone Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/undertone-tuner/id6759796106/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free | — |
| Size | 31 MB | 5 MB |
| Requires iOS | **15.1** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Inner Circle](https://appshunter.io/developer/367838600) | [Michael Sparks](https://appshunter.io/developer/1896760107) |

## What reviewers say

### 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 |


### True Tone Studio

[App page](https://appshunter.io/ios/app/true-tone-studio/id6770960422)

**In-app purchases:** none


## Frequently asked questions

### Is Undertone Tuner free?

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

### Is True Tone Studio free?

True Tone Studio is free to download, with no in-app purchases.

### Do Undertone Tuner or True Tone Studio have ads?

Neither Undertone Tuner nor True Tone Studio shows ads.

### Which is updated more often, Undertone Tuner or True Tone Studio?

Undertone Tuner ships an update monthly, and True Tone Studio every 4 days. Most recently, Undertone Tuner was updated on October 24, 2026 and True Tone Studio on October 19, 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.*