---
title: "Application development and testing"
url: "https://help.tabidoo.cloud/en/article/application-development-and-testing"
language: "en"
last_updated: "2022-12-28T08:34:01.884Z"
---

# Application development and testing

For the development and testing of the application it is necessary to have 4 versions of the application:

![](https://cdn-assets.productfruits.com//e8dbb6c6-d8d2-4487-9495-964d1275ca75)

### **1\. App Master** 

-   developer's original app
-   the developer will make all improvements to it
-   the client has no access to it

### **2\. App Template**

-   is App Master published in the section Private template 
-   you update it with all the improvements from the App Master
-   the client has no access to it but he can download it

### **3\. App PROD (Production)**  

-   copy of the App Template downloaded by client 
-   the application used by the client only 
-   no improvements are made in it 
-   updates from App Templates are made after approved improvements, which the client will test in the BV application.

### **4\. App BV (Business Verification)**

-   second copy of the App Template downloaded by client
-   the application used by the client only
-   an application that the client uses only to test new improvements by updating from the App Template

### **Process:**

Developer create a master app ‘**App Master‘** and publish it on Template section as a private template **‘App Template‘**. When publishing, the developer sets that the client can download this application template.

-   *So the **Developer** has two applications. In the first main '**App Master**' he develops, creates improvements and then updates the second app **'App Template'** \* to reflect those improvements.*

The **Client** downloads a copy of the template, so he has **‘App PROD’**. Only the client works with this copy and it will be used as his main application.

The **Client** will want improvements to his application **‘App PROD’**. The **Developer** will create these improvements in the main ‘**App Master’**, where after editing, he will go to the private templates section and make an update to ‘**App Templates’** to include the improvements. The **Client** downloads a second, already improved copy of ‘**App Templates’** and this will be his ‘**App BV’**, where he tests the applied changes.

-   *So the **Client** has **‘App PROD’**, the first original copy of **‘App Template’** and a second copy **‘App BV’ \*\***, where he periodically updates the applied improvements and tests them.*

The **'App PROD'** update will only be made if the client agrees to the applied change.

For any further improvements:

1.  The client will be instructed by the developer to reflect the improvements in the **'App Template',** 
2.  The client always updates the improvements from the **'App Template'** to the **'App BV'** first, to test.
3.  If the client agrees to the improvements, he will also reflect the improvements in the **'App PROD'**.

**\*** **'*****App Template'** is updated by giving the option to **publish to templates** again in **‘App Master’**.*

***\*\*** To update **‘App PROD’** and **‘App BV’**, click **Add new table, Import from Templates** and search for **‘App Template’**.*