kappi vs Edgewonk: Who Can Check a Record You Keep Yourself?

	kappi	Edgewonk
Price	$15/month ($180/year)	$197/16mo (~$12.31/month)
EU/UK cost	$15/month	up to $250.19 with VAT (~$15.64/month)
Who can read it	You, until you unseal it	You
Who can verify it	Anyone, without kappi	Nobody but you
Fixed once committed	Yes — sealed at commit	No
Psychology tooling	Commitment you cannot revise	A core part of their product

What does Edgewonk get right?

The economics, for one: $197/16mo^[1] works out to about $12.31 a month against kappi's $15, and it is a licence rather than a subscription. a licence rather than a subscription, and the term is 16 months on the current '16 months for the price of 12' offer — $12.31 a month. VAT-inclusive prices run $197.73 to $250.19 depending on country — so a buyer in the highest VAT band is paying nearer $15.64 a month, which is worth knowing before comparing headline numbers. Read the term as well as the price: the same $197 was a twelve-month licence when this page was first written, which is $16.42 a month rather than $12.31.

More importantly, Edgewonk takes the psychological half of trading seriously, which most journals treat as a notes field. That is the right instinct. Most blown accounts are not analytical failures; they are a rule the trader knew and overrode.

So why would a record need to leave your own machine?

Because a record only you can read is a record only you can grade, and the trader is the one person in the world who cannot audit it. This is not a security argument — it is an epistemic one. You already know what you meant to do. What you cannot establish, from inside your own file, is whether the version you remember is the version you wrote.

Two different failures follow from that, and they are worth separating:

• Nobody else can check it. A prop firm, a partner or a subscriber has no route to your file, and no reason to trust a screenshot of it.
• You cannot check it either. A file you can rewrite is a file that quietly tracks your current opinion of the trade rather than the opinion you held before it resolved.

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.

Does kappi mean giving up privacy?

No, and this is the part most comparisons get wrong. A commit is sealed at the moment it is made, so precedence is fixed immediately, but nothing is readable until you choose to open it. Privacy and proof are usually traded off against each other; a seal is what lets you keep both, because the timestamp does not require anyone to see the contents.

Every sealed commit is hashed into a Merkle tree and anchored to Hedera, so the log is append-only and independently checkable.

When should you pick Edgewonk?

When the journal is for you alone and you want it to stay that way — no account, no publication, no third party, one payment a year. If your goal is to fix your own discipline and nobody is ever going to ask you to prove anything, the extra machinery on kappi's side is cost without benefit, and their psychology tooling is more developed than a recorder's.

When should you pick kappi?

When the point is that someone else, later, can confirm what you said at the time — or when you want a record your own hindsight cannot edit. At $15 a month against roughly $12.31, price is within a few dollars either way. 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.