# Basic Detection vs DreamDejaVu!?

The clearest difference is device support: Basic Detection at 3 against DreamDejaVu!?'s 1. Basic Detection also leads on iOS requirement (13.0 vs 26.4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Basic Detection ships an update every 2 months, DreamDejaVu!? every 6 weeks. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Basic Detection | DreamDejaVu!? |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (2 ratings)](https://appshunter.io/ios/app/basic-detection/id1256836350/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | — |
| Size | 37 MB | 5 MB |
| Requires iOS | **13.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Shenzhen Macrotellect Limited](https://appshunter.io/developer/593369519) | [William Gorman](https://appshunter.io/developer/6772754418) |

## What reviewers say

### Basic Detection

[App page](https://appshunter.io/ios/app/basic-detection/id1256836350)

Record and analyze real-time brainwave data, displaying 8 frequency bands. Track concentration and relaxation states to make timely adjustments. Compare saved data sets to monitor changes over time. Requires a BrainLink headband.

**Highlights:** Real-time brainwave monitoring, 8 brainwave frequency bands, Concentration/relaxation state tracking, Data set comparison, Historical data reports, Brainwave activity recording

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

**In-app purchases:** none


### DreamDejaVu!?

[App page](https://appshunter.io/ios/app/dreamdejavu/id6772754416)

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

**In-app purchases:** none


## Frequently asked questions

### Is Basic Detection free?

Basic Detection is free to download, with no in-app purchases.

### Is DreamDejaVu!? free?

DreamDejaVu!? is free to download, with no in-app purchases.

### Do Basic Detection or DreamDejaVu!? have ads?

Neither Basic Detection nor DreamDejaVu!? shows ads.

### Which is updated more often, Basic Detection or DreamDejaVu!??

Basic Detection ships an update every 2 months, and DreamDejaVu!? every 6 weeks. Most recently, Basic Detection was updated on October 6, 2026 and DreamDejaVu!? on October 7, 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.*