# Dev Mode

Development mode will help you test all the steps, webhooks, APIs without spending $ on gas and waiting for real transactions to complete on blockchains.

To go to Dev Mode, create new App in [Console](https://console.simplepay.ai/) and switch Development Mode on:

<div><figure><img src="https://3504918617-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXps6Hpvtcnwm326Ywnfb%2Fuploads%2FAscObYU8TMbWXlOanqzK%2FGroup%202dev%20screen.jpg?alt=media&#x26;token=64c09b75-4f10-431a-b14e-3ae665690760" alt=""><figcaption></figcaption></figure> <figure><img src="https://3504918617-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXps6Hpvtcnwm326Ywnfb%2Fuploads%2FWXiXLdvR5GeUm8VoEp2A%2FGroup%203dev%20screen.jpg?alt=media&#x26;token=9d462ac8-c9fb-4d5d-98d7-628e8f9d5701" alt=""><figcaption></figcaption></figure> <figure><img src="https://3504918617-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXps6Hpvtcnwm326Ywnfb%2Fuploads%2F9ReIYmIB36059PoruXJG%2FGroup%204dev%20screen.jpg?alt=media&#x26;token=1b7e5505-cd06-4481-a2af-a23304ed2092" alt=""><figcaption></figcaption></figure> <figure><img src="https://3504918617-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FXps6Hpvtcnwm326Ywnfb%2Fuploads%2FcRuIgstatXKmAQ1SqkIf%2FGroup%205dev%20screen.jpg?alt=media&#x26;token=7c92f511-aa7d-4152-96aa-96c83d03516d" alt=""><figcaption></figcaption></figure></div>

If dev mode is on, use these wallet addresses in the FROM fields:

**For Success statuses**

* "0x0000000000000000000000000000000000000000", // EVM chains: Ethereum, Binance Smart Chain
* "TSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS", // Tron
* "1SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS", // Bitcoin
* "LSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS", // Litecoin

**For Rejected**

* "0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", // EVM chains: Ethereum, Binance Smart Chain
* "TRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR", // Tron
* "1RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR", // Bitcoin
* "LRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR", // Litecoin