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Cobook

One shared ledger for two
Yong Ping Chen · Finance
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App info

Developer
Yong Ping Chen
Category
Finance, Productivity
Released
Sep 24, 2026
Version
1.4.0 (Oct 18, 2026)
Price
Free
Size
45.3 MB
Requires
iOS 16.4
Age rating
4+
Languages
English and Simplified Chinese

In-app purchases

none
Current prices, App Store US.

About Cobook

Cobook — one ledger, two people. Why Cobook Couples, families and flatmates split the bill but never quite settle the account. Cobook gives you one shared ledger: who paid, who owes whom, clear at a glance — no more scrolling back through chat history to work it out. Three seconds to log a spend It opens straight onto the keypad. Amount and category live on the same screen — no jumping, no steps. Logging a spend should be over in three seconds. Snap the receipt, let it do the typing Photograph a receipt and the merchant, amount, date and category are filled in for you. Confirm and it's logged. The original image can be kept, so you can look at it again whenever you need to. Works with no signal Record anywhere; it syncs to your other devices once you're back online. You can use the whole app without an account — signing in is only for cloud backup and shared ledgers. Where the money…
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