Field guidesCover letters and Network
Write the letter. Know who you know.
A cover letter builder that asks you questions instead of writing for you, and a private list of the people behind your search. Put the two together and Seisin tells you when you already know someone at the company you are writing to.
The letter
Your words, in a sensible order
Most people stall on a cover letter because the page is blank, not because they have nothing to say. Seisin breaks the letter into paragraphs and asks one plain question for each, so you are answering rather than composing. Nothing is generated for you: the words are yours.
The letter has a proper header with your contact details, who you are writing to and a sign-off. Each section gets a completeness check that runs on your own computer, and you can export to PDF or Word. If the content would run onto a second page, Seisin tightens the spacing and text size to fit one page and tells you it did.
A finished letter can be attached to the application it was written for, the same way a resume is, so you can see later which letter went out with which application.

Network
The people behind a search
Recruiters, referrals, former coworkers, people from school and everyone in between. Network keeps them apart from any single application, because a person outlives the role you met them about.
After a conversation, log a dated note about what was said and what you promised to follow up on. Tag a contact to an application when they become relevant to it. On the free plan a contact links to one application at a time; unlink it to link a different one.

Ines Cardoso Backend engineer, referral
- Hollowmere Systems
- Recently moved there
- 1 Sep
- Said to reach out if I ever applied there too
- Tagged to
- Cindermoor Labs, Senior Backend Engineer
Connected
Who do you already know here?
The letter and the contact list stop being two separate files.
There are two moments where the connection shows up. When you add an application, Seisin flags anyone in your Network who already works at that company. And when you write a letter for an application where you know someone, that person appears right under the opening paragraph, with their latest note beside them.
Mentioning someone in a letter is a favour you should ask for first, so Seisin does not hand you wording straight away. Choose Thinking of mentioning them and it asks whether you have checked with the contact. Only once you say yes does it show two example ways to refer to them. You adapt those to your own voice. Nothing is ever written into the letter for you.

Free plan
Private, with a few limits
Everything here stays on your own device. Network is the one place Seisin holds information about someone other than you, and it is stored locally in exactly the same way as the rest of the app. Nothing is uploaded, and there is no account.
Both features are free, with a few limits. Exporting a cover letter is 3/week and exporting a resume is 10/month, whether as PDF, Word or print. Adding new contacts to Network is 20 in your first 30 days, then 5/month. Those three reset on a schedule, so they never lock you out for good. Each contact can also be linked to one application at a time. Saving, editing and viewing are never limited, and nothing you already have is ever removed. Settings has a Your Free Plan section that shows what is left and when each limit resets.
There is more on the plan, and on what is coming later, in the FAQ.