# Lucid Dreaming Experiment vs Curva

The clearest difference is in-app purchases: Lucid Dreaming Experiment at none against Curva's 2. Lucid Dreaming Experiment also leads on ads (none vs shown). Curva's advantage is update cadence (daily vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Curva sells 2 one-off in-app purchases. Lucid Dreaming Experiment asks for nothing beyond the download.

Lucid Dreaming Experiment ships an update every 2 weeks, Curva daily. The most recent releases landed on October 25, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Lucid Dreaming Experiment | Curva |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Daily** |
| Size | 12 MB | 6 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Nathan Whitmore](https://appshunter.io/developer/1896664399) | [Axel Cayetano Alcaraz](https://appshunter.io/developer/6785364540) |

## What reviewers say

### Lucid Dreaming Experiment

[App page](https://appshunter.io/ios/app/lucid-dreaming-experiment/id6769513728)

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

**In-app purchases:** none


### Curva

[App page](https://appshunter.io/ios/app/curva-angle-tracker/id6785364388)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sin anuncios | $1.99 | one-time |
| Curva Plus | $4.99 | one-time |


## Frequently asked questions

### Is Lucid Dreaming Experiment free?

Lucid Dreaming Experiment is free to download, with no in-app purchases.

### Is Curva free?

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

### Do Lucid Dreaming Experiment or Curva have ads?

Curva shows ads; Lucid Dreaming Experiment does not.

### Which is updated more often, Lucid Dreaming Experiment or Curva?

Lucid Dreaming Experiment ships an update every 2 weeks, and Curva daily. Most recently, Lucid Dreaming Experiment was updated on October 25, 2026 and Curva on October 6, 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.*