Independent Software Studio · Est. Chicago
All Day Software logo

Software built the long way, so it works the short way. I make well-made software for ambitious small teams. A studio that ships like a team of ten, run by one.

All Day Software is a one-person studio pairing fifteen years of engineering practice with a fluency in modern AI tooling. Custom software, shipped products, and senior help for teams that don't need a ten-person retainer.

Taking new projects · Q2 / Q3 2026 Chicago · Remote-friendly

If software can solve it, I can build it.

Web platforms, mobile apps, backend systems, internal tools, data & reporting, AI-assisted systems. Fifteen years across the stack — one person accountable for all of it.

  • Custom web platforms

    The system your business runs on — built around how you actually work, not how off-the-shelf software assumes you do.

  • iOS & mobile apps

    A polished app in your customers' pockets — designed, built, and shipped to the app stores.

  • Backend systems & APIs

    The machinery behind the scenes — it makes your systems talk to each other, and it doesn't fall over when business picks up.

  • Internal tools & dashboards

    Replace the spreadsheet everyone's afraid to touch with a tool your team actually likes using.

  • Data pipelines & reporting

    Your numbers, current and in one place — not copy-pasted between systems the night before the board meeting.

  • AI-assisted systems

    AI put to work on the repetitive parts of your business — practically, and only where it earns its keep.

Software built for other people's missions.

Case study / 001 ReVive Center, Chicago Newly live · 2026

ReVive runs a homeless shelter and outreach program on Chicago's west side. I built them the platform their mission deserves — and it's live.

ReVive IMPACT is a comprehensive client-management platform — every interaction, outreach run, intake and goal — with HIPAA-grade audit logging, role-based access, and reports stakeholders actually read.

ClientReVive Center
SectorNonprofit / Social services
EngagementCustom platform build
ScopeEnd-to-end platform build
ComplianceHIPAA audit trail

Contact log

Every interaction captured once, searchable forever.

Outreach ops

Locations, runs, inventory — field work made visible.

Client profiles

Multi-section intake and goal tracking with role-gated access.

Impact reports

Stakeholder reports generated from live data, not assembled the night before.

Case study / 002 MathWiz League · Education

A teacher needed live math competition. It was in classrooms a month later.

A real-time competition platform — head-to-head matches, leaderboards, and dashboards for teachers, parents, and admins. Built for a teacher, now six seasons in with 150+ students competing.

Read the case study

When I'm not shipping for clients, I'm shipping for myself.

In development · iOS

LifeSigns

— a personal health coach, powered by MOSAIC

LifeSigns maps your life and tracks your health patterns — heatmaps, timelines, Apple Health — entirely on-device. Powered by MOSAIC, a hybrid ML engine fusing 115+ health, location and environmental signals into personal baselines. Zero cloud.

PlatformiOS — waitlist open
EngineMOSAIC · CoreML + PyTorch · hybrid ML
PrivacyPrivate, on-device · zero cloud
lifesignsapp.com
Live · iOS · macOS · Android

SplitterUp

— split expenses the smart way

Split expenses the smart way. AI receipt scan, bank import, and a settle-up algorithm that minimizes payments between friends.

PlatformiOS · macOS · Android
HighlightsAI receipt scan · bank import · smart re-split
Traction1,600+ users · iOS · macOS · Android
Idea → production

Three production launches. One person. Here's how fast.

<100days
Concept → App Store
SplitterUp — iOS, macOS & Android
Launched January 2026
1month
Zero → live
MathWiz League — live in classrooms
Rebuilt in 2025
4months
Prototype → live
ReVive IMPACT — HIPAA-grade nonprofit platform
Live in production · 2026

Two decades building software, and I'm still hooked.

David Fritz, founder of All Day Software
David Fritz
Founder · Principal Engineer · Chicago
Connect on LinkedIn →

All Day Software is me — fifteen years of large-scale systems practice meeting modern AI tooling.

I've been coding since I was fourteen, when my dad taught me the basics of Visual Basic 6.0. By fifteen I was building websites thousands of people used every day — motrclan.net, long gone now, but the habit of shipping stuck. For the past fifteen years I've built software professionally that couldn't afford to break. I spent a decade at JPMorgan Chase on systems processing more than $2 trillion a year in payment data — the financial reporting Apple, Amazon, Amex, PayPal, and other Fortune 100 companies relied on to read their vital numbers. At Clearcover I built the claims automation that gave their team back 1,200 hours a month. And at point.me — named one of Fast Company's Most Innovative Companies as it scaled from Series A to B — I led the design, implementation, and rollout of "Flight Search 2.0": the company's core engine, rewritten from the ground up on modern architecture to handle 5.3 million fares a day with near-zero downtime. Then I launched a price-alerts product that 10,000 people adopted in its first five months.

Now I work for myself. I obsess over details. I don't take shortcuts I can't explain. The quiet thing nobody tells you about production-grade habits: they cost the same whether the system is massive or modest. Your project gets the same rigor either way.

How I work
P/01
Ships like a team, priced like one person.
Fifteen years of patterns plus modern tooling delivers scope a traditional shop quotes six figures for — without their overhead stack in the invoice.
P/02
Fixed-scope proposals. No hourly surprises.
You get a scope, a number, and a date before work starts. Changes get priced openly. The clock doesn't run while I think.
P/03
Demos as often as you want them.
Real software running on real data, on whatever cadence suits you. If it's going sideways, you find out in week one — not month three.
P/04
Built to scale. Built to hand off.
The stack I'd use at a funded startup, documented the way I'd want to inherit it. Your repo, your cloud account, your code — day one.
Start a project

Let's build something great, together.

Tell me the problem, the timeline, the budget. I'll tell you whether I'm the right fit.

or connect on LinkedIn