What is Solid?

Solid is a payments app for Android, built on Solana. It has four parts:

• The keyboard. Ask for money, pay somebody or split a bill from inside WhatsApp, Signal, Telegram or any other app, without leaving the chat.
• The app. See what you hold, what you're owed and what came in, swap between tokens, and collect stamps and points.
• The till, for businesses. Ring up items, show a code or let customers tap phones, send invoices and run a loyalty card.
• Solid Business, the same shop on the web at sendsolid.app/account.

Solid never holds your money. Every payment goes from one wallet to another, and you approve each one in your own wallet.

The person paying you doesn't need Solid. A Solid link or code works with any Solana wallet.

What you need

• An Android phone. Solid runs on any recent Android phone, and is at home on the Solana Seeker.
• A Solana wallet app, such as Solflare or Phantom, or Seed Vault on a Seeker. Solid asks your wallet to approve payments; it never stores your keys.
• Some money to send, if you're paying. Asking to be paid needs nothing in your wallet at all.

Set up the keyboard

1. Open Solid once after installing it. It walks you through the rest.
2. Switch Solid on in Android settings. On a Samsung phone: Settings → General management → Keyboard list and default.
3. Choose Solid as your keyboard, or switch to it from the keyboard button in any chat.
4. Type normally. When you want to pay or get paid, tap the Solid mark on the keyboard and choose Request, Send or Split.

In a password field the payment buttons are switched off, and the keyboard learns nothing you type there.

Connect your wallet

The first time you pay or request, Solid asks your wallet to connect. Approve it in the wallet, and Solid remembers the account you chose.

Connecting shares your wallet's public address with Solid, so it can show your balances and build payments. It never shares your recovery phrase or keys, and it can't move money without your approval each time.

To disconnect, open Settings → Wallet. Disconnecting also tells your wallet to forget Solid.

What does it cost?

For people, Solid is free. Each payment has a Solana network fee, usually a fraction of a cent, paid in SOL to the network rather than to us.

For businesses, the till is a fixed monthly subscription, not a percentage of your sales, with a free 30-day trial and no card needed to start. A shop can also stake SKR instead of paying. See Pricing and billing.

Ask to be paid

1. In any chat, tap the Solid mark on the keyboard and choose Request.
2. Pick the token and type the amount. Add a note, like "for dinner", so they know what it's for.
3. Tap Add. A message with the amount, the note and a link goes into the chat.

The person taps the link, which opens a payment page that hands the payment to their Solana wallet. They see your address and the amount before anything moves.

The link is a short one, sendsolid.app/q/…, that nobody can edit. The first time, your wallet asks you to sign a short statement so the page can say the request came from your wallet. That's once, and it costs nothing. See Short links.

You can also ask from the app: Pay me on the home screen shows a QR code and a link to share.

Pay somebody

1. Tap the Solid mark and choose Send, or use Send in the app.
2. Choose who: a saved person, a pasted address or .sns name, or scan their code.
3. Check the amount and the address, then approve in your wallet.

If the address looks like one you've used before but differs in the middle, Solid stops and shows you both. That catches the most common scam on Solana, where someone plants a lookalike address in your history.

Paying a .sns name

Copy their name, like thandi.sns, then in Send tap Paste an address or .sns name. Solid looks the name up on the blockchain before it shows you anything, and the confirmation shows the name, the full address it points to and a picture of that address.

Names are read by the rules of the Solana Name Service: if the name is held as an NFT, whoever holds it is paid; if the owner has pointed it at another wallet, that wallet is. The address is always on screen before you approve, because a name is a pointer somebody else controls.

Solid only accepts names in plain lower-case letters, numbers and hyphens. A name spelled with a lookalike letter from another alphabet is refused, even though it's a real name, because it can't be told apart from the one you meant.

Split a bill

Tap the Solid mark, choose Split, and enter the total and how many people are sharing it. Solid posts one link for each person's share, with the total and the number of ways, so everyone can check the sum.

Everybody pays the same link, so Solid doesn't need to know who is in the group.

Pay somebody with no wallet

Send a claim link. The money leaves your wallet and waits in the link; whoever opens it can claim it into a wallet they set up, even if they have never used Solana.

• Claim links are for small amounts, up to 25 USDC, because anyone holding the link can claim it.
• If nobody claims it within 72 hours, you can take the money back from the app.
• Send the link privately. Treat it like cash in an envelope.

Which money can I use?

• USDC and USDT: US dollar stablecoins.
• ZARP: a South African rand stablecoin, one ZARP to one rand.
• SOL: Solana's own token, also used for network fees.
• SKR: the Seeker ecosystem token.

Solid only lists a token once its address on the blockchain has been checked, because a copycat token with the same name is a common trick.

Swap between tokens

Tap Swap on the home screen to change one token for another, for example rand for dollars. Solid finds a price through Jupiter, shows you what you'll receive, and your wallet approves the swap.

Prices move, so the amount you receive can differ slightly from the quote. Solid shows the least you'll get before you approve.

How do I know I was paid?

Every request you send is tracked on the home screen under Waiting on payments until the money arrives. Solid checks the blockchain itself, so "paid" means it really arrived, not that somebody said so.

To be told the moment money lands, switch on Settings → Privacy → Being told you were paid. It's off by default.

Everything you've sent and received is under Activity.

Are payment links safe?

A payment link says who to pay and how much. It can't take money from anybody: the person paying approves the payment in their own wallet, with the address and the amount on screen.

Anybody who has the link can see what it asks for, so share it with the person who owes you. Payment pages are never shown in search results.

A receipt link points at the payment on the blockchain. Anyone can check it, and nobody, Solid included, can change it.

Short links

Requests and bills go out as sendsolid.app/q/ followed by ten characters. The request itself is kept by Solid, so changing the link can't change the amount or where the money goes: change a character and it's simply nobody's request.

The page shows three things a long link can't:

• Who asked. "Asked for in Solid by the wallet it pays", or "A bill from" a shop on Solid. With a .sns name that points back to the wallet, the page shows that too.
• Whether it's been paid. The page checks the blockchain and says Paid, or "2 of 3 paid" for a split.
• When not to pay it. A request that was cancelled, has expired or was taken down says so, and offers no way to pay. Dismissing a request in the app, or cancelling a sale on the till, cancels its link.

A link lasts 30 days. Solid keeps your address, the amount, the token, the note and how many payments have arrived, and never who paid. Turn short links off under Settings → Privacy → Send requests as short links, and your requests go out as long links that Solid keeps nothing about. Somebody sent you a link that's a scam? Email security@sendsolid.app with the link and we'll take it down.

Network fees

Every Solana payment pays a small fee to the network, usually a fraction of a cent, in SOL. It doesn't go to Solid.

Solid adds no fee of its own to personal payments. Businesses pay a fixed subscription instead of a cut of each sale.

I sent money to the wrong address

A Solana payment can't be reversed by anybody, including us. Solid never holds your money, so it has no way to pull a payment back.

If you know who owns the address, ask them to send it back. This is why Solid shows the full address, and a picture of it, before you approve anything.

Can Solid see what I type?

The keyboard can't send anything anywhere. The part of Solid that draws the keys has no network code at all, and the app's build fails if any is added.

It never reads what's already in the text field of the app you're using. It knows only what you type on it.

To suggest words, it keeps a list of words you've typed three times or more, and your recent emoji, on your phone only. You can erase both under Settings → Privacy. In password fields it keeps nothing.

Where is my money kept?

In your own wallet, which Solid never has the keys to. Solid puts a payment together and hands it to your wallet to approve.

If you uninstalled Solid tomorrow, nothing about your money would change. It was always in your wallet.

The one exception is ORE savings, if you use them. Saving moves your money into ORE's own staking program on Solana, not into your wallet and never to Solid. You take it back with ORE's withdraw, in Solid or in ORE's own app, at any time.

The keyboard lock and limits

The keyboard lock is on by default. Request and Send stay closed until your phone confirms it's you with your fingerprint or screen lock, then stay open until the screen goes off.

Under Settings → Security you can change how long the lock stays open, and set how much Solid may spend, so a borrowed phone can't send more than you'd want.

What Solid stores

For people, almost nothing. There are no accounts, no analytics and no tracking anywhere in the app. What's kept on your phone stays on your phone.

A few things keep a small record. Short links keep the requests you send as links, but never who paid. Things you choose to turn on do too: payment notifications, points, and loyalty rewards you claim with your pass. Merchant accounts keep what a business needs, like its name, email and invoices.

To delete what Solid keeps about your wallet, use Settings → Privacy → Delete my Solid data.

The privacy policy lists every one of these and exactly what each keeps.

If I lose my phone

Your money is in your wallet, not in Solid. Restore your wallet on a new phone with its recovery phrase, install Solid, and connect again.

If you run a shop and lose a staff phone, remove it under Staff & tills on Solid Business. It stops working within the hour.

Loyalty stamps

Shops that run a Solid loyalty card give you a stamp each time you pay. Stamps land in your wallet as small tokens that can't be sold or moved, drawn as a lightning bolt.

See yours under Stamps on the home screen. Each shop decides how many stamps fill a card and what a full card earns.

Your pass

Your pass shows a shop's till your stamps and how much SKR you stake, so it can give you the rewards and perks you've earned.

1. Open Stamps → Show my pass at the counter, or Settings → Your pass.
2. Your wallet signs a short statement. Signing moves no money and costs no fee.
3. Hold the code up to the till. It works for fifteen minutes.

The shop sees your wallet address, your stamps from that shop and your stake. If it gives you a loyalty reward, the till records it with your pass so the card can't be used twice. Otherwise nothing is sent to Solid.

Claiming a reward

When your card is full, show your pass when you pay. The till sees the full card and takes the reward off the bill in one tap, whether that's a free item or a percentage off.

If the reward covers everything, there's nothing to pay and no payment on the blockchain. The shop's record of your signed pass is what shows the card was used.

Points and competitions

Points are an opt-in rewards programme. Join by proving your wallet with a signature, then earn points for using Solid and enter competitions for prizes.

Nothing about you is kept until you join. The privacy policy explains what joining keeps.

Staked SKR in Solid

If you stake SKR, Solid gives that stake something to do:

• Perks at shops. Show your pass and a shop's till checks your stake for its perks, like a discount or time to pay.
• A say in what's built. Stakers vote on which tokens and features come next.
• For shop owners, a linked staking wallet can open the till without a subscription, and can show on your invoices.

Your SKR stays staked where it is. Solid never holds it, and none of this promises a return.

Have a say

Under Settings → Have a say, people who stake SKR vote yes or no on what Solid supports next. One address, one vote. Results publish themselves at sendsolid.app/vote.

You can also suggest a question, signed by your staking wallet, once a week.

A vote for a token doesn't list it by itself. It puts the token on the list to be checked by hand first.

Open a merchant account

1. Sign up at sendsolid.app/join with your business name, email and country. The first 30 days are free, with no card needed.
2. Confirm your email, then say which wallet payments should land in.
3. In the app, open the Till tab and sign in with the same email.

Customer payments go straight to your wallet. Solid never holds your takings.

Take payment at the counter

1. On the Till, tap items or type an amount, then tap Charge.
2. Turn the phone around. The customer scans the code with any Solana wallet, or taps their phone against yours.
3. The phone buzzes and turns green when the payment lands, usually in seconds.

If they'd rather pay later, tap Send as an invoice or send a quick link instead.

Items, sizes and the photo scan

Add what you sell under Items on the till or on Solid Business. An item can have one price, come in sizes, or be priced at the till each time, like a call-out.

To add a whole menu at once, photograph a price list and Solid reads the items and prices for you to check. The photo is used once and not kept.

Changes reach every till in the shop the next time it opens.

Staff and paired phones

Staff names go on sales, so you can see who rang up what. They're labels, not accounts.

Paired phones are extra tills. Pair one with a code from the owner's phone or Solid Business. A paired phone takes payments into your wallet but has no key to it, so staff can't move your takings.

Remove a phone when somebody leaves; it stops working within the hour.

Refunds

A refund is a new payment back to the customer, sent from the owner's phone, because that's the phone with the wallet that holds the money.

Staff on a paired phone can ask for a refund instead. The owner sees the request, checks the sale, and approves or declines it.

Card-style chargebacks don't exist on Solana. A payment is final, and refunds are yours to give.

Invoices and receipts

Send a numbered invoice from the app or Solid Business, with your registered name, address and VAT details. Send it from your own WhatsApp or email, so it comes from you.

The invoice closes itself when the payment arrives, and the customer can save it as a PDF.

After a sale at the till, tap Send a receipt for the same page marked paid.

Clients you invoice are kept on your phone, not on our servers.

Run a loyalty card

1. Open Merchant account → Loyalty.
2. Choose what a full card earns: a free item, a percentage off the bill or one item, or your own words.
3. Tap Set up loyalty. It costs about 0.17 SOL once, mostly a deposit you get back if you close the programme, and makes room for 16,384 stamps.

At the end of the day, open Loyalty and tap Stamp to give each paying customer their stamp. When a customer shows a full card on their pass, the till applies the reward for you.

Perks and pay-later terms

Under Merchant account → SKR, offer perks to customers who stake SKR: a free extra, a percentage off, or a set number of days to pay.

When a customer shows their pass, the till checks their stake and lists the perks they qualify for. A discount comes off with one tap; pay-later terms send the sale as an invoice with a due date.

Solid Business on the web

Sign in at sendsolid.app/account for the same shop on a bigger screen: sales, invoices, items, staff and tills, perks, settings and billing.

Anything you change there reaches your tills, and changes made on a till show there.

Pricing and billing

The till is a fixed monthly subscription, not a percentage of your sales. The first 30 days are free. It's R199 a month in South Africa or $18 a month elsewhere, plus R15 or $2 for each extra phone; paying for a year gets you twelve months for the price of ten. See everything at sendsolid.app/merchants, where you can show prices in rand or dollars.

How you pay: each invoice from Solid comes with a Solana Pay link. Pay it from any Solana wallet, in ZARP (the rand stablecoin) if your business is registered in South Africa, or in USDC (the dollar stablecoin) anywhere else. There's no card payment and no debit order. Find your invoices under Billing on Solid Business.

Or stake instead. Link your shop's own wallet, the one your payments land in, under Merchant account → SKR. While it stakes the amount shown there, the plan is covered, and each add-on too once it stakes a little more. Your personal stake stays yours, for your pass and your vote.

Getting money to your bank

Payments land in your own wallet, already yours. There's nothing to withdraw from Solid.

To move money into a bank account, send it from your wallet to an exchange or off-ramp that supports the token, and withdraw from there. Choose one that's licensed where you are.

Solid isn't in my keyboards

Open Android settings, then General management → Keyboard list and default, and switch Solid on there before choosing it.

If Solid isn't in the list at all, the app didn't finish installing. Reinstall it and open it once before looking again.

My wallet doesn't open or sign

• Check a Solana wallet app is installed, such as Solflare, Phantom or Seed Vault.
• Open the wallet once and unlock it, then try again from Solid.
• If the wallet opens but the payment fails, check you have a little SOL for the network fee.

We've had the most reliable results with Solflare.

A payment still says Waiting after it was paid

Waiting means Solid hasn't seen it on the blockchain yet. It checks the chain rather than anybody's word, so a payment that really arrived shows up within a minute or two.

If it stays waiting, check the payer used the same network and the same token the request asked for. Dismissing a request (the × beside it) cancels its short link, so the page tells anyone who opens it not to pay. A payment that was already on its way still arrives.

"Token does not exist" in the wallet

That message comes from the wallet, not the link. It means the wallet is on a different network from the request.

A short link, sendsolid.app/q/, says Mainnet or Devnet on its page. Of the long links, sendsolid.app/p/ is for Solana mainnet, where real money lives, and sendsolid.app/t/ is for devnet, the test network. Switch networks in the wallet's settings and open the link again; it doesn't need to be sent again.

Contact us

Email hello@sendsolid.app and a person will answer. In the app, Settings → Help can copy a short, readable summary of your setup, like the app version and whether the keyboard is on, for you to paste if you want to. It never includes your address or balance.

Found a security problem? Email security@sendsolid.app before sharing it anywhere else.

Questions about your data: privacy@sendsolid.app.