# True Tone Studio vs Eterna

The clearest difference is in-app purchases: True Tone Studio at none against Eterna's 10. True Tone Studio also leads on update cadence (every 4 days vs fortnightly). Eterna's advantage is iOS requirement (15.1 vs 26.5). On price, ads and device support there is nothing between them.

Both are free to download. Eterna sells 10 one-off in-app purchases. True Tone Studio asks for nothing beyond the download.

True Tone Studio ships an update every 4 days, Eterna fortnightly. Both last shipped on October 31, 2026.

## The numbers

| Metric | True Tone Studio | Eterna |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Size | 5 MB | 60 MB |
| Requires iOS | 26.5 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Michael Sparks](https://appshunter.io/developer/1896760107) | [Omer Faruk Umunc](https://appshunter.io/developer/1836149045) |

## What reviewers say

### True Tone Studio

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

**In-app purchases:** none


### Eterna

[App page](https://appshunter.io/ios/app/eterna-event-camera/id6777136351)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 5 people album with unlimited photo | $5.99 | one-time |
| 10 people album with unlimit photos | $6.99 | one-time |
| 15 people album with unlimit photo | $7.99 | one-time |
| 20 people album with unlimit photos | $8.99 | one-time |
| 30 people album with unlimit photos | $9.99 | one-time |
| 50 people album with unlimit photos | $12.49 | one-time |
| 100 people album with unlimit photo | $14.99 | one-time |
| 250 people album with unlimit photo | $34.99 | one-time |
| unlimited people album | $79.99 | one-time |
| unlimit people album&unlimit photo | $84.99 | one-time |


## Frequently asked questions

### Is True Tone Studio free?

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

### Is Eterna free?

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

### Do True Tone Studio or Eterna have ads?

Neither True Tone Studio nor Eterna shows ads.

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

True Tone Studio ships an update every 4 days, and Eterna fortnightly. Most recently, True Tone Studio was updated on October 31, 2026 and Eterna on October 31, 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.*