kappi vs TradeZella: Which One Can You Actually Show Someone?

	kappi	TradeZella
Price	$15/month ($12.75 via a referral link)	$35/mo
How trades arrive	Committed before the fact	Imported after the fact
Fixed once committed	Yes — append-only	No — editable by design
Usable as evidence	Yes	Not really — you assembled it
Analytics depth	Core metrics	Extensive — that is its job
Works with any brokerage	Yes — nothing to connect	No — import from a supported broker

Is TradeZella a bad product?

No, and this page is not going to pretend otherwise. At $35/mo^[1] it is a mature, well-built journal with deep analytics, and if your problem is "I do not understand my own trading", it is a better answer than kappi. kappi's reporting is deliberately thin by comparison.

The two are not competing for the same job. The confusion is worth clearing up because both get called "trading journals".

Why can't a normal journal be used as proof?

Because it is a document you control. A journal is built to be corrected — you want to fix a typo in a fill price, reclassify a setup, delete a duplicate import. Those are features. They are also exactly what makes the finished article worthless as evidence, because a reader cannot distinguish a corrected journal from a curated one.

Broker-import journals prove what you did after the fact, from data you control. kappi timestamps what you said you would do, before you knew how it would turn out, on a record you cannot edit.

Import-based journals also inherit whatever the broker exports. That is fine for analysis and useless for establishing intent: a fill tells you a position opened, not what you expected it to do, and not whether you told anyone beforehand.

What does kappi do differently?

A commit is sealed before the fact and released on a time-capsuled delay. Every sealed commit is hashed into a Merkle tree and anchored to Hedera, so the log is append-only and independently checkable.

Your notes and your trades stay yours until a time of your choosing. A commit is timestamped and sealed the moment it is made, so precedence is fixed immediately, but nothing is readable until you let it open. You decide when it becomes public; you cannot change what it says.

And because commits come from the extension rather than an import, there is no supported-broker list to check. kappi is broker-agnostic. Commits are made from the Chrome extension, so any brokerage works — or your own journal, kept wherever you already keep it. No import, no account linking, no requirement to trade inside someone else's platform.

What does the price difference actually buy?

TradeZella is $35/mo; kappi is $15 a month, or $12.75 through a referral link. But the two are cheap and expensive at different things. TradeZella's price buys analysis. kappi's buys a record someone else will believe. If you need both, running both costs less than most single subscriptions in this category and is a perfectly sensible setup.

When should you pick TradeZella?

When the audience is you. If nobody else is going to read the record and the goal is to find your own leaks, buy the better analytics. Pick it also if your broker is on their import list and you want the work done for you rather than committing trades by hand as you take them.

When should you pick kappi?

When someone else has to believe it: a prop firm, a partner, an audience, or your future self arguing about what you actually intended six months ago. $15 a month, $12.75 through a referral link, and no free tier.