Avvio vs Kast: Which Global Money App Is Right for You? (2026)
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Avvio Team - 06 Jun, 2026
Quick answer: Kast is a live, custodial card built for spending stablecoins today. Avvio is a self-custody account built to do your whole financial life in one place: get paid, save, spend, and invest. If you mainly want to spend crypto on a card right now, Kast is more mature. If you want one account that pays you, grows your cash, and keeps you holding the keys, that’s Avvio.
If you earn or live across borders, you’ve probably hit the same wall. Your home bank wasn’t built for a life spread across countries. A new category of global money apps has stepped into that gap, and two names that keep coming up are Avvio and Kast.
They look alike at first. Both give you USD account details, a Visa card, and a way to move money worldwide without a traditional bank. But they’re built on two different ideas about what your money should do, and who holds it. Here’s the honest breakdown.
One disclaimer both companies make, and so do we: neither Avvio nor Kast is a bank. Both are financial technology companies that provide accounts, cards, and custody through licensed partners. Balances are not FDIC-insured. That’s normal for this category. It’s just the baseline to understand before you pick either one.
The short version
Kast is built around spending. It’s a live, custodial stablecoin card with premium tiers, cashback, and broad acceptance. Strong if you’re crypto-native and want to spend digital dollars now.
Avvio is built around your whole financial life in one account: get paid, earn, spend, and invest, all self-custody, so you hold the keys. Avvio is live now, with apps on iOS and Android.
So if the one thing you care about is spending crypto on a card today, Kast is the more proven pick. If you want a single account that gets paid in USD or EUR, grows your cash, spends without the FX games, and keeps you in control, that’s the gap Avvio is built for.
Avvio vs Kast at a glance
| Avvio | Kast | |
|---|---|---|
| Core idea | One account to get paid, save, spend, and invest | Stablecoin-powered spending card |
| Custody | Self-custody. You hold the keys (Turnkey, export anytime) | Custodial. Funds held via partners |
| Get paid | USD and EUR account details, 120+ countries | USD and EUR account details, 170+ countries |
| Card | Visa, 150M+ merchants, Apple Pay | Visa (Platinum/Infinite), 150M+ merchants, Apple/Google Pay |
| FX on spending | 0% FX fees | 0% on USD; ~0.5% to 1.75% on non-USD (per Kast’s schedule) |
| Earn / yield | Automatic yield on USD/EUR cash, from government bonds and managed DeFi, up to 7% APY | Crypto staking (e.g. SOL); not automatic cash yield |
| Invest | US stocks, Bitcoin, Gold | Not a core feature |
| Rewards | Yield-focused, not cashback | 1.5% to 3% cashback by tier + points/token |
| Status | Live (iOS and Android) | Live, including physical cards |
| Bank? | No. Fintech, partner-provided, not FDIC-insured | No. Fintech, partner-provided, not FDIC-insured |
The real difference: who holds your money?
This is the most important line in the whole comparison, and it’s easy to skim past.
Kast is custodial. When you load funds, they’re held through Kast’s custody and payment partners, and your balance shows up as a dollar-denominated obligation. It works smoothly. It also means a third party controls the funds. If an account gets flagged during a compliance review, access can be paused while it’s sorted out. That’s true of most apps in this space.
Avvio is self-custody. Transactions are signed on your device through Turnkey, there are no seed phrases, and you can export your keys anytime. If Avvio shut down tomorrow, your funds would still be yours. Avvio has no ability to freeze, move, or touch them. The trade is simple and honest: a little less hand-holding, a lot more control.
Neither model is automatically better. Custodial is familiar and hands-off. Self-custody trades a bit of convenience for real ownership. If “I never want my own money frozen by someone else” lands for you, that points to Avvio.
What each one is built to do
Kast centers on the card. It’s designed so you can hold stablecoins and spend them anywhere Visa works, with premium metal tiers, cashback, and a points program that rewards how much you spend. For someone already living in crypto who wants smooth real-world spending, that focus is a genuine strength.
Avvio centers on the account. It’s one place to run your money across systems: receive USD or EUR like a local, earn on idle cash automatically, spend on a card, and invest, without juggling four apps. Saving is a first-class feature here, not an afterthought.
Getting paid
Both give you dedicated USD and EUR account details so clients or employers can pay you like a local, across 100-plus countries each. Close to a tie on paper. The real question is what happens after you’re paid, which is where they split.
Spending and fees
Both run a Visa card accepted at 150M+ merchants with Apple Pay. On fees, Kast’s published schedule lists 0% on USD spending and roughly 0.5% to 1.75% on non-USD, plus ATM withdrawals around $3 + 2%. Avvio’s card has 0% FX fees and works at 150M+ merchants with Apple Pay. Worth knowing: even a “0% FX fee” can sit next to an exchange-rate spread, so read the fine print on either app before you decide.
Earning yield
This is where the two genuinely separate. Avvio puts savings front and center: yield on your USD or EUR cash, drawn from regulated government bonds and managed DeFi lending, with the allocation traceable on-chain. Kast’s earning is oriented around crypto staking (like SOL) rather than automatic interest on your spendable balance. So if you want idle dollars to grow without thinking about it, Avvio is built for that. If you want staking rewards and spending perks, Kast leans that way. Avvio advertises up to 7% APY on cash; the exact qualifying terms are shown in the app.
Investing
Avvio includes access to global markets from the same account, with US stocks, Bitcoin, and Gold. Kast doesn’t position itself as an investing product. If “save and invest in the same place I get paid” matters to you, that’s an Avvio-only feature here.
Availability
Be clear-eyed about timing. Kast is live today, with physical cards and an established tier system. Avvio is live too, on iOS and Android. Kast has a longer track record and physical cards; Avvio is newer but already ships the full account. Weigh that honestly against how well the features fit.
Who should choose which
Choose Kast if you’re crypto-native and your main goal is spending stablecoins on a card right now, you like premium card tiers and cashback, and you’re comfortable with a custodial model that’s already live.
Choose Avvio if you want one account to get paid, earn, spend, and invest instead of four apps, if growing your USD or EUR cash matters as much as spending it, if you want self-custody and to hold your own keys, and you want it available on both iOS and Android today.
The bottom line
Kast and Avvio are solving overlapping problems from opposite ends. Kast optimizes for spending crypto today inside a custodial model. Avvio optimizes for running your whole cross-border financial life, paid and saved and spent and invested, in one self-custody account. Same neighborhood, different blueprint.
If your life is genuinely global and you’d rather not split it across a card app, a savings app, a transfer app, and a brokerage, Avvio is built to be the single account underneath all of it, with you holding the keys.
Frequently asked questions
Is Avvio a bank? No. Avvio is a financial technology company, not a bank. Accounts, cards, custody, and yield are provided through licensed partners and protocols, and balances are not FDIC-insured.
Is Avvio safe? Avvio is self-custody, so you hold the keys. Your wallet is built on Turnkey, unlocked by Face ID or fingerprint, with no seed phrases and 2FA recovery if you lose your device. The honest caveat: self-custody means more control and more personal responsibility for your access.
How is Avvio different from Kast? Two things. Custody (Avvio is self-custody, Kast is custodial) and breadth (Avvio adds automatic cash yield and investing, where Kast focuses on spending).
Is Avvio available in my country? Avvio supports local payouts across 120+ countries, but availability and features vary by jurisdiction. Check avvio.xyz or the app for the current list.
Avvio is a financial technology company, not a bank. Accounts, cards, custody, and yield are provided by licensed partners and protocols. Balances are not FDIC-insured and availability varies by jurisdiction. This article is for information only, not financial advice.