> For the complete documentation index, see [llms.txt](https://docs.ispecalgo.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ispecalgo.com/en/ispecalgo-project/znakomimsya-s-proektom/podpiska.md).

# Subscription

A subscription gives full access to iSpecAlgo products available in your dashboard: ISA Terminal, available strategies, materials, and other products.

Subscribe on the iSpecAlgo website through **Pricing**. This page requires a registered account: sign in first.

## Ways to renew

You can buy subscription days or receive them by meeting the free-subscription conditions. Initial trial access is described in [Registration](/en/ispecalgo-project/znakomimsya-s-proektom/registraciya.md).

## Free 90-day subscription

Register on an exchange using iSpecAlgo's referral link and meet the conditions listed on the website:

1. Register or sign in to iSpecAlgo.
2. Open **Pricing**.
3. Open **Free subscription**.
4. Select an exchange.
5. Copy its referral link or code.
6. Register on that exchange using this exact link or code.
7. Meet the conditions on the website.
8. Return to **Pricing**.
9. In **Free subscription**, enter your exchange account ID.
10. Click **Check**.

If the conditions are met, **90 subscription days** are credited.

If you are already registered under another exchange partner, iSpecAlgo cannot attach your account to its affiliate program. In that case, referral registration does not earn the free subscription. This type of access requires being an iSpecAlgo referral.

## Select the exchange

Changing the exchange in the free-subscription section changes the referral link and code. Use the link for the exchange where you intend to register.

Verification may not be immediate. If your ID is not accepted yet, wait for the exchange to provide the data and try again later.

## Paid subscription

1. Register or sign in to iSpecAlgo.
2. Open **Pricing**.
3. Select a subscription period.
4. Select the payment network: **TRC20** or **TON**.
5. Pay the invoice in **USDT**.
6. Wait for payment confirmation.
7. After successful payment, the subscription days appear in your balance.

Payments are accepted in **USDT**, on **TRC20** and **TON**.

## Payment problems

If the payment page does not open or the form does not work, enable your VPN and try again. The problem may involve access to the payment page from your location or provider rather than the iSpecAlgo website.

If you sent a payment but did not receive subscription days, contact support with the payment network, amount, time, transaction ID (TXID) if available, and destination address.

## Video guide

[Buying an iSpecAlgo subscription — video in Russian](https://www.youtube.com/watch?v=lLj8XtuV7eA\&t=3s)

Some information in the video may be outdated. The current instructions in this documentation are: pay in USDT; TRC20 and TON are supported; try a VPN if payment does not work; sign in before opening **Pricing**.

## Next steps

Once days are credited, continue to the [ISA Terminal overview](/en/isa-terminal/znakomstvo-s-terminalom-isa.md) and installation.