> For the complete documentation index, see [llms.txt](https://docs.affyn.com/en/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.affyn.com/en/all-about-usdfyn/setup-metamask/guide-to-buy-usdfyn-on-metamask.md).

# Guide to buy $FYN on MetaMask

{% hint style="warning" %}
Transactions taking place on the Polygon blockchain require payment of MATIC (Polygon network) as gas fees. Users are recommended to **prepare at least 1 MATIC** in their wallet.
{% endhint %}

{% hint style="info" %}
Actual UI may differ due to updates.
{% endhint %}

**Step 1:** Open the MetaMask mobile application. Check that you are connected to **Polygon Mainnet**

![](/files/Gj0C5sFZWXB2dZwl7mIQ)

**Step 2:** Select the "Double Arrows" icon

<div align="left"><figure><img src="/files/uzIMlp3KyvzuuoF5azqO" alt="" width="300"><figcaption></figcaption></figure></div>

**Step 3:** Select `Swap`

<div align="left"><figure><img src="/files/BRhjPzLoXkXQDn6nmzfi" alt="" width="300"><figcaption></figcaption></figure></div>

**Step 4:** Click on `Select a token`

![](/files/YHcr2CJeggTtQ7P4mrG1)

**Step 5:** Enter `Fyn` in the search box, then select `Affyn`

![](/files/OKZ08uvm9Kih22Bvk0QW)

**Step 6:** You should see FYN populated in the bottom box. Select the **box on top**

![](/files/PJYQPrTaCXQcfaBnHxvc)

**Step 7:** Search for the token that you are using to swap to $FYN. In this example we will be using USDC

![](/files/62vtXwdg5BuR3lOQnCHr)

{% hint style="info" %}
Ensure that the tokens you are using for the swap are on the Polygon blockchain
{% endhint %}

**Step 8:** Key in the amount of tokens that you want to swap to FYN using the number input panel. In this example, we will be using 5000 USDC

![](/files/nCicamwSFKP3zVeRQ3gt)

**Step 9:** Select `Get quotes`

![](/files/TrdrFzK7Czf8dAoRI3WJ)

**Step 10:** Wait for MetaMask to finish fetching quotes

![](/files/Plh1uTItGj2S5tVspFrm)

**Step 11:** Select `I understand`

![](/files/M9daVW2HtHu4CVeOfgZf)

**Step 12:** If you are happy with the quote, **swipe** the white button to the right

![](/files/jciaslVyhghCPvMWAQD2)

**Step 13:** Wait for MetaMask to complete the transaction

![](/files/HWM0mUf9U0vbCRTH8jpr)

![](/files/gm12LlFtOoCPIIM1ClrB)

**Step 14:** Congratulations! The swap is now complete. You can select the "Transaction History" icon to view your transaction history

<div align="left"><figure><img src="/files/wO1jfRuBEPvOvj6Od7Xy" alt="" width="300"><figcaption></figcaption></figure></div>

![](/files/mPJnlJC7VWGeu8GKF6Nw)


---

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