A Monarch alternative built around your investments

Monarch is a money app: it brings your bank accounts, credit cards, loans, property and investments together so you can budget, follow spending and plan goals, alone or with a partner. Sonar is narrower. It tracks your investments, crypto, stocks, ETFs and cash, and puts market context next to each holding. If you're choosing between them, the question is whether you need a budget or a closer look at your portfolio.

What Monarch does well

• Budgeting and cash flow. Customizable budgets, every transaction in one searchable list, recurring subscriptions found for you and a flow chart of where money goes.
• The whole household. Bank accounts, credit cards, loans, real estate (with Zillow estimates) and investments in one net worth. Monarch lists individual stocks, mutual funds, 401(k)s, ETFs and crypto among the investments it covers.
• Couples. Invite a partner or a financial professional at no extra cost.
• Wide connections. Monarch says it syncs with more than 13,000 financial institutions through multiple data providers.
• Every device. Web, iPhone and Android, kept in sync.

Monarch suits people who want one app for budgeting, spending and net worth, for whom $14.99 a month or $99.99 a year is worth it.

Where Sonar is different

• A free plan. Monarch offers a 7-day trial. Sonar's Free plan has no end date: up to 10 holdings, live prices, performance, CSV import and one connected wallet. Paid plans are $7, $11 and $20 a month.
• Built for investments. Time-weighted performance compared with the S&P 500 and Bitcoin, allocation by class and account, and profit or loss on every holding.
• Self-custody crypto. Wallets on more than 50 networks are read by public address, including Ethereum and its Layer 2s, Solana and Bitcoin.
• Market context. On Starter, every stock and coin you hold shows mentions, engagement, sentiment, social dominance, top creators and news. On Standard, coins also show onchain activity, and AI alerts flag unusual moves.
• AI access. An MCP connector for Claude and ChatGPT, a REST API and a command-line tool.

Monarch and Sonar compared

When Monarch is the better choice

• You want a budget, spending categories and subscription tracking.
• You want bank accounts, credit cards, loans and your home in the same net worth.
• You manage money with a partner and want to share one view.
• You want a native phone app today.

When Sonar fits better

• Your money is mostly in crypto, stocks and ETFs, and you want those tracked closely.
• You hold crypto in self-custody wallets.
• You want to see what the market is saying about each holding.
• You want to start free, or ask Claude or ChatGPT about your portfolio. See pricing.

Some people use both: a money app for the household budget, Sonar for the investment side.

How to switch from Monarch

1. Export your holdings. Download a positions or transactions file from your broker, or copy your holdings into a spreadsheet with symbol, quantity and cost basis.
2. Import into Sonar. Sonar detects the columns and lets you check each one before saving. See importing a CSV.
3. Connect accounts. Add wallet addresses on any plan, and on Starter, Standard and Premium connect US brokerages and crypto exchanges through Plaid.

Look around the sample portfolio first if you'd like.

Questions

Is there a free alternative to Monarch?

For investments, yes. Sonar's Free plan tracks up to 10 stocks, ETFs and coins with live prices and performance. It doesn't do budgeting.

Does Sonar track spending or bank accounts?

No. Sonar tracks investments only. It doesn't connect bank accounts or credit cards.

Can Sonar track my crypto wallets?

Yes. Paste a public address on Ethereum, Solana, Bitcoin or more than 50 other networks. See the crypto wallet tracker.

Can Sonar move money?

No. Every connection is read-only.

Monarch is a trademark of its owner. Sonar is not affiliated with Monarch. Facts about Monarch were checked on its website on October 27, 2026, and may have changed since.