Tech

Houston, Texas · Shipping software since 2010

L337Tech

Engineer-built software

We build tools for people who do real work. Our flagship is QuickDecline, production decline analysis and economics for oil and gas, written by petroleum engineers. We're also a partner of Covenant Labs, the Texas studio behind Flock, MannaCode and GUS.

See our products 16 years of shipping
Online since
2009
Apps shipped
14+
Platforms
webOS · Android · Windows · Java
Home base
Houston, Texas

01 Flagship product

Decline analysis without the five-figure license.

QuickDecline turns production history into forecasts, reserves and full cash-flow economics in minutes. It started as our answer to industry packages that cost thousands per seat, and it has served engineers, landmen and royalty owners for over a decade.

Quick evaluations for everyone.

Fit a curve by dragging it with your mouse. Check it against diagnostic plots. Run economics with a few inputs, or build out detailed capital, pricing and tax schedules. No engineering degree required, though the people who wrote it have them.

Visit quickdeclineapp.com Request a free trial
QuickDecline fitting gas, oil and water decline curves on a log-scale rate plot
Fit Decline: drag the handles, watch EUR and reserves update live.
  • Drag-to-fit curves Hyperbolic, harmonic and exponential forecasts for oil, gas and water.
  • Diagnostic plots Pick the right b-factor and spot operational issues before you forecast.
  • Full economics BFIT and AFIT cash flow, NPV tables, IRR, payout and reserves.
  • Built-in GIS map Select wells on the map to build aggregates and type curves. Shapefile and WMS support.
  • Open database Projects are plain SQLite, ready for sharing and BI tools.
  • Network licensing Shared seats and network-deployable projects for teams.

02 Portfolio

Covenant Labs

L337Tech is a partner of Covenant Labs LLC, a bootstrapped Texas portfolio company building products that serve people, from church communities to codebases.

Covenant Labs LLC · Texas · Est. 2025

Covenant Labs

Technology, built on promise.

covenantlabs.dev

Flock

Shepherd your people.

A mobile-first app for church community groups: a real-time prayer wall, attendance intelligence and group chat.

On the App Store · flock.church

MANNA·CODE

More from every token.

An AI coding harness built for radical context efficiency, so context stops being the limit.

mannacode.ai

GUS

Answers from your graph.

A graph RAG bot that retrieves across the relationships in your data and answers with those connections intact.

Proprietary

03 Track record

Sixteen years of shipping.

Before QuickDecline there was a long run of apps: overclocking tools and GPS utilities for the Palm Pre, an internet radio player, a paperless filing tool and a Texas well-data browser. Most are retired now. Every one shipped.

  1. 2009

    L337Tech.com goes online.

    A Houston tech site for custom PC builds, overclocking, how-to videos and a community forum.

  2. 2010

    The webOS years.

    The Palm Pre arrives and the tinkering turns into apps, distributed through Palm's catalog and the homebrew community.

    • CPUScalerwebOSOne-tap CPU scaling for the Palm Pre, in Lite, Uber and Ultimate editions.
    • Super PreKernelwebOSOne-step kernel and patch installer, built with the PreCentral community.
    • GPS AltitudewebOSAltitude and accuracy readout with a live dashboard.
    • GPS Trip PanelwebOSSpeed, heading, altitude and trip stats. A Palm Hot Apps contest entry.
    • Internet RadiowebOSSearch and stream thousands of SHOUTcast and Icecast stations.
    • Stay Lit FlashlightwebOSA flashlight that doesn't dim, with strobe and SOS modes.
    • Chess Visualization TrainerwebOSBoard-visualization drills based on a classic Russian training method.
    • App TriggerwebOSLaunches your music app when headphones or Bluetooth audio connect.

  3. 2011

    Small tools, done well.

    • Tap To The Beat!webOSTap along to a pulse or a song and get the BPM.

  4. 2012

    Into the oil patch.

    A reservoir engineer's day job meets a habit of building tools. L337Tech starts shipping software for oil and gas.

    • Quick Decline UltimateDesktopDecline analysis and economics for $99, against packages that cost thousands. The ancestor of QuickDecline.
    • Texas Production Query ToolDesktopLook up production and well data for any active well in Texas by API number.
    • Quick JobsJavaFree go-paperless utility that renames, stamps and files your scans.
    • Internet RadioAndroidThe webOS favorite, ported to Android.

  5. 2014

    QuickDecline.

    QuickDecline launches: drag-to-fit curves, flow-regime diagnostics, detailed economics, a built-in GIS map and an open SQLite project database. Still our flagship today.

  6. 2025

    Covenant Labs.

    L337Tech partners with Covenant Labs, a new Texas portfolio company now shipping Flock, MannaCode and GUS.

04 Story

Why “L337”?

In old internet slang, 1337 (“leet”) means elite: the tinkerers who take things apart to see how they work. L337Tech started that way in 2009, as a Houston engineer posting PC builds and how-to videos.

When the Palm Pre came out, the tinkering turned into apps. When the day job in reservoir engineering kept asking for faster, cheaper ways to forecast a well, it turned into QuickDecline.

The rule hasn't changed since: build the tool you wish you had, and make it good enough that other people want it too.