Pricing
Planned pricing. Aftermark is pre-launch, so these figures are not a checkout and there is nothing to buy today.
$29 USD per month, planned
$290 USD per year, planned
Aftermark, when it launches. Every feature described below, on as many of your own computers as you personally use.
A 30-day free trial is planned. No card is needed to start it. When the 30 days end, the trial ends and nobody is charged unless they subscribe.
How renewal works. The monthly plan renews automatically each month until you cancel. The yearly plan renews automatically each year. You can switch that off at checkout or at any time afterwards, and we'll email you about 30 days before each yearly renewal with the date, the amount and how to cancel. You can cancel either plan online in a minute, using the link in your Paddle receipt or at paddle.net. Cancelling stops future charges, and you keep access until the end of the period you've paid for.
Not yet for sale. Payment processing is not open. If you would like to be told when it opens, or you have a question first, email us.
What you will get at launch
A single download that will run on your own Windows computer. No installer to fight, no account to create, no runtime to configure — it will use only what Python already ships with, and start by double-clicking one file. None of this is available to download today.
| Included | Detail |
|---|---|
| The journal | Positions, deposits, true profit and loss against contributions, and account value over time. |
| Realized gain and loss | Lot-level FIFO matching, long-term and short-term separated, partial closes allocated proportionally. |
| Post-mortems and mistake ledger | Per-trade write-ups and a running record of repeated errors. |
| Expiry list and concentration | Your open positions by expiration date, and the share of your account in each underlying. |
| Calculator | Options math on numbers you enter: cost and maximum loss for a size you choose, a profit table, greeks. Computed locally in your browser. No trade or size suggestions. |
| Lot-detail CSV export | Shaped like your broker's own realized gain/loss lot detail, for your tax preparer. |
| Adding trades | Aftermark is in pre-launch and isn't available to download yet. You'll add trades to your journal yourself or import them from files. We're still deciding which brokers the first release will read files from, and we'll list them here before launch. Aftermark never connects to your brokerage to place, change or cancel orders. |
Aftermark does not identify or adjust for wash sales or other tax-lot rules, so its profit and loss figures may differ from your broker's Form 1099-B and from what you report to the IRS. Use your broker's tax documents and a tax professional for tax reporting. Aftermark is not tax software and does not give tax advice.
What will not be included
- Market data. Aftermark will ship with no data and no API keys. Current prices for valuing your own positions need your own key from a provider you sign up with directly.
- Aftermark does not identify or adjust for wash sales or other tax-lot rules, so its profit and loss figures may differ from your broker's Form 1099-B and from what you report to the IRS. Use your broker's tax documents and a tax professional for tax reporting. Aftermark is not tax software and does not give tax advice.
- A hosted version or a mobile app. It will run on your computer, and only on your computer.
- An obligation to support. We answer email and we intend to keep improving it, but the licence does not promise support, updates or maintenance. We would rather say that here than imply otherwise.
Sloth Trading LLC is not affiliated with, endorsed by or sponsored by any broker. Aftermark does not give investment, tax or legal advice. Full disclaimer.
Refunds
The 30-day trial is free, and no card is needed. If you subscribe, you get a 14-day money-back guarantee on your first paid charge, and on each yearly renewal charge. Monthly renewals aren't refunded, but you can cancel any time to stop future charges. Details are in the refund policy. Sales aren't open yet, so there's nothing to refund today.