> For the complete documentation index, see [llms.txt](https://docs.celly.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.celly.ai/config/app-configuration.md).

# App configuration

Celly app has 2 types of configs:

* **App settings** - camera,  performance, user interface 
* **Test configuration** - test type, slide id, test history

## App Settings

**Gear icon** in the right bottom corner.

![Settings page](/files/-MJhrwJ_jU3TKxTjvfGN)

### Common settings

**Online preview:** enables mini-map on the top right corner during the test;

**Show metrics**: enables window with performance parameters (CPU, RAM load, FPS);

**Save photo on the device:** on - when you tap the **snapshot icon** (right top corner) the app saves photos on the phone Album; off - save photos on the app web portal (Test->View->Snapshots);

### Camera settings

**Adapter**: enables anti-distortion algorithms. Chose your type of adapter;

**Recording**: record and save the video on the device;

**Calibration**: color balance and exposure calibration (set your microscope brightness on maximum before the calibration to get the best quality images)

## Test configuration

The **blank** **icon** is on the left bottom corner.

![Test configuration panel](/files/-MJXuEcgsvRl0EnzULAO)

**Select a custom test:** set test type, and slide id for the new test;

**Select a pre-set:** you can use pre-configured tests;

**Test history (clock icon):** opens the window with the test history - reports, statistics.