
Rebalancy: ETF Rebalancing
How many shares to buy
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Free
In-App Purchases
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About
Set VOO 60% and BND 40%. Rebalancy fetches quotes, compares them with what you hold, and tells you how many shares to buy or sell. It is a calculator you use before you place an order, not a portfolio dashboard.
[TWO MODES]
• Standard rebalance: buys and sells to bring positions back to target
• Contribution rebalance: buys only, from the amount you are investing this time
[MARKETS]
• US stocks and ETFs, priced in dollars (VOO, BND, VTI), quoted from Yahoo Finance
• Taiwan listings and ETFs, priced in New Taiwan dollars (0050, 00878), quoted from the Taiwan Stock Exchange with a fallback source
• One strategy covers one market, with no currency conversion between them
[SETUP AND CALCULATION]
• Target weights are yours to set, totalling 100%
• Whole-lot mode for markets that trade in fixed lots
• Drift threshold from ±1% to ±10%; nothing is suggested while you are inside it
• Cash can be counted as part of the allocation
[RECORDS]
• Buys, sells and transfers are kept as entries; holdings are derived from them
• Record dividends you received
• Every rebalance you carry out is kept
• Deleted strategies and history go to the trash first
[REMINDERS]
• Contribution reminder: opens with the amount you plan to invest, using the latest prices
• Drift reminder: notifies you when your primary strategy drifts past the threshold, checked ahead of that market's open
[STRATEGIES AND ACCOUNTS]
• A strategy is one set of target weights. Switching strategies is a different view of the same holdings
• Positions with a recorded purchase price show the change against your last buy
• Accounts keep each brokerage separate, with transfers between them
[WHAT COSTS MONEY]
• Free: rebalancing, quotes, transactions, dividends, history, both markets
• Rebalancy Pro is a one-time purchase, not a subscription: it lifts the limit of one strategy and one account, and turns on iCloud sync
• No ads, no tracking, no account. Data stays on your device, and in your own iCloud private database once sync is on
This app is a calculator for your own planning and is not investment advice. Quotes may be delayed; check with your broker before placing an order.
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What's New in Rebalancy
1.3.1
August 31, 2026
Improved • VoiceOver now reads amounts with the full currency name (1,234 US dollars), instead of spelling out the symbol. Fixed • Share counts use the right singular and plural forms (1 share, 2 shares), along with the other sentences that carry a count. • The confirm button on the tracking start sheet read "Settings"; it now reads "Set".
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Subscriptions & In-App Purchases
$2.99
Rebalancy Pro
Unlock multiple strategies and accounts.




