App Locksmith
Month to month
Shipping new features with AI every week?

Keep shipping fast. I'll watch the security.

Every feature the AI writes can open a new hole. For a flat monthly fee I check what you ship, watch for leaked keys and bill spikes, and answer when customers ask if you're secure.

Start at $350 a month

Month to month. Cancel any time, no notice and no fee.

Free 15-minute call first. Month one is a full audit, then I watch every release.

I'm Nate Parker, a senior software engineer. I already do exactly this, every week, for a B2B software startup.

Sound familiar?

  • You had the app checked once. You've shipped dozens of changes since.
  • If a key leaked, you'd find out from the bill.
  • When a customer asks if it's secure, you'd like to say yes and mean it.

What you get

  • Every release checked
    I review what changed within one business day and fix or flag anything risky.
  • Someone watching
    Alerts for leaked keys, odd logins and spending spikes, so you hear it from me first.
  • Customer questions handled
    Security questionnaires and "is it safe?" emails go to me.
  • Emergencies included
    If something does go wrong, the lockdown work is covered, and I have taken clients through live incidents before. Same-day response.
  • A monthly one-pager
    What shipped, what I checked, what I fixed.

Security on call, $350 a month

Start at $350 a month

How it goes

  1. We talk for 15 minutes
    You tell me what you're building and how often you ship.
  2. Month one is a full audit
    I review and fix the whole app so we start from a clean baseline.
  3. Then I watch every release
    You keep building. I check each change and tell you when something needs attention.
Security on call
$350
a month

Introductory price for my first ten clients. Goes up after that.

The same arrangement I already run for a B2B software startup. I take a limited number of clients so that the response time stays true.


  • Full audit in month one
  • Review of every release
  • Key, login and spending alerts
  • Customer security questions answered
  • Emergency response included
Start at $350 a month

Month to month. Cancel any time, no notice and no fee.

Free 15-minute call first. Month one is a full audit, then I watch every release.

Why it's $350 a month

Freelance security consultant, hourly$144 average
This, every release watched$350 / month

A single afternoon of a consultant costs more than two months of this, and at the end of the afternoon they go away again. This works because I'm watching one small app I already know.

Figures from freelance security consultant rates. Not my former prices: I have never charged them.

Who you're hiring

Nate Parker
Nate Parker
Senior software engineer

For five years I've built and defended the platform at a healthcare software company, where security is a large part of my job. I'm also the security engineer for a B2B software startup, and I've found real vulnerabilities in widely used open-source code. I've built, shipped and sold my own software too, so I know what it's like when the app is your income. You work with me directly.

15+
apps reviewed
< 8 hrs
typical first reply

Across my professional security work, not App Locksmith alone. The clients are under NDA, so no names, ever — including yours.

Fair questions

What if I barely ship some months?
Then it's a quiet month of monitoring with an engineer on call. Pause or cancel whenever you like.
Do you replace my developer?
No. I don't build features. I check what gets built, whether a person or an AI built it.
Why not just get an audit once?
An audit is a photo of one day. If you ship every week, the app I checked is gone within a month.

Tell me what you're building

And how often you ship changes.

One or two sentences is plenty. We can talk properly on the call.

Optional, and only if you'd rather talk than type.

Month to month. Cancel any time, no notice and no fee.

I reply within 24 hours, and the call is free.