Bug triage & prioritization
Incoming defects are assessed by severity and user impact, so the crash blocking checkout jumps the queue over a cosmetic glitch.
App Maintenance & Support · Bug Fixes & Hotfixes · AI-First · Results-Driven
Bug Fixes & Hotfixes,Diagnosed Once and Fixed Cleanly
Short answer: Bug fixes and hotfixes are the work of diagnosing and resolving defects, crashes and regressions in a live app — a bug fix on the normal release cycle, a hotfix as an urgent out-of-cycle patch for something breaking in production right now. Good fixes find the root cause rather than masking a symptom, and ship with a test so the same bug can't come back. Left unfixed, defects erode trust, drive one-star reviews, and pile up into regressions that make every future change riskier. Zen in Tech fixes bugs in apps we built and ones we inherit, with the same engineers who know the code doing the work.
Root-cause fixes, not symptom patches
Every live app has bugs — the question is how they get handled. A bug fix is the normal path: a defect is triaged, prioritized against everything else, fixed, tested, and released on the regular cycle. A hotfix is the emergency path: something is broken in production right now — a crash on launch, a broken checkout, a data issue — and it can't wait for the next release, so it's patched and shipped out-of-band, fast. Both need to be handled cleanly, or the fix becomes tomorrow's regression.
The difference between a real fix and a band-aid is root cause. It's easy to make a symptom disappear — swallow the exception, add a null check where it crashed — and much harder to understand why it happened and fix it at the source. We reproduce the bug first, trace it to its actual cause, fix that, and add a regression test so the same defect can't quietly return. Skipping that reproduce-and-verify step is how teams 'fix' the same bug three times.
Because the same in-house engineers who know your codebase do the diagnosis and the fix, we move fast without breaking things elsewhere. Every fix goes through code review and testing before it ships — and for true emergencies, we can push a verified hotfix to production or over-the-air the same day.
What we cover
What bug fixes & hotfixes cover
Root-cause diagnosis
We reproduce the bug and trace it to its actual source instead of masking the symptom, using logs, crash reports and debuggers.
Crash & regression fixes
We resolve crashes, freezes and regressions — including bugs a previous change reintroduced — cleanly and at the source.
Emergency hotfixes
For production-down issues, we patch and ship out-of-cycle, including over-the-air updates where the platform allows, often the same day.
Fix verification & regression tests
Every fix is verified against the original report and covered by a test so the same defect can't silently come back.
Defect tracking & backlog
Bugs are logged, prioritized and tracked transparently, so you can see what's fixed, what's queued, and what's next.
Services
How we handle a bug from report to fix
From the moment a defect comes in to the monitoring after it's fixed, here's the lifecycle of a bug at Zen in Tech.
1. Intake & triage
We capture the report, assess severity and user impact, and decide whether it's a scheduled fix or an emergency hotfix.
2. Reproduce & diagnose
We reproduce the bug reliably and trace it to its root cause using logs, crash reports, and step-through debugging.
3. Fix & code review
We implement the fix at the source, then a second engineer reviews it to make sure it's clean and doesn't introduce new risk.
4. Test & verify
We verify the fix against the original report and run regression tests so nothing else breaks in the process.
5. Release
We ship on the normal cycle for standard bugs, or push an out-of-band hotfix — including OTA updates — for production emergencies.
6. Post-fix monitoring
We watch error and crash rates after release to confirm the fix held and no related issues surfaced.
Tools & platforms
The debugging & fix stack we run
The exact toolset depends on your goals — these are the platforms we use most, and we work with whatever your team already relies on.
Error & crash reporting
Debugging & profiling
Issue tracking
Testing & QA
Releases & hotfixes
Chosen per project — not a fixed menu. Have a preferred tool or platform? We’ll work with it.
Built to last
Secure, Accessible & Built to Last
We build on modern, well-supported frameworks with security and accessibility baked in — dependency hygiene, input validation, HTTPS and WCAG-minded UI — so your product is safe and usable from day one.
You own all the code and assets. Everything ships with documentation and a clean handover, so your team (or ours) can maintain and extend it without lock-in.
Who we work with
Industries We Build For
20+ years across sectors — in Houston and internationally.
Transparent pricing
Estimate your project in seconds
Pick what you’re building for an indicative range, then request an exact quote. No email wall.
Simple prices for typical tasks
- Basic carefrom $800/mo
- Growth carefrom $1.5k/mo
- SLA supportfrom $2.5k/mo
- One-off fixesfrom $150/hr
Proof
700+ projects, 20+ years
See the products and growth work we’ve shipped across industries — and request a case study relevant to yours.
How we work
Fixed scope. Sprints. Working software.
- 01
Scope & fixed estimate
A short discovery call turns your idea into a clear spec and a firm range — free.
- 02
Design & architecture
UX, data model and stack chosen for your scale, not ours.
- 03
Build in sprints
Working software every 1–2 weeks — you see progress, not promises.
- 04
Launch & scale
We ship, measure and keep improving with care plans.
FAQ
Bug fixes & hotfixes: frequently asked questions
How much do bug fixes and hotfixes cost?
Ongoing bug fixing is usually part of a monthly care plan starting around $800/mo, which covers a steady flow of defect work plus emergency hotfixes. One-off fixes are billed by scope or from about $150/hr, and business-critical apps that need guaranteed emergency response run on an SLA-backed plan. We confirm pricing after seeing the app and the kind of issues you're hitting.
What's the difference between a bug fix and a hotfix?
A bug fix follows the normal release cycle: the defect is triaged, prioritized, fixed and shipped with the next planned release. A hotfix is urgent — something is broken in production right now, so it's patched and released out-of-band, immediately, rather than waiting. Same careful diagnosis behind both; the difference is the timeline and how fast it ships.
How fast can you fix a critical production bug?
For a genuine production-down emergency on a supported app, we aim to have a verified hotfix out the same day, and often within hours, depending on complexity and your plan. On SLA-backed care plans that response time is guaranteed. Where the platform allows over-the-air updates, we can push a fix without waiting for an app-store review.
Can you fix bugs in an app your team didn't build?
Yes — this is one of our most common requests. We take over apps other teams built or abandoned, starting with a quick review of the codebase so we can reproduce and diagnose reliably. The same engineers then stay on the app, so each fix builds real knowledge of the code instead of starting from zero every time.
How do you make sure a fixed bug doesn't come back?
We fix at the root cause rather than masking the symptom, and we add a regression test that covers the exact defect. That test runs on every future build, so if a later change ever reintroduces the bug, it's caught automatically before it reaches users. We also monitor error rates after release to confirm the fix actually held.
Do you fix bugs for apps outside Houston?
Yes. We're based in Houston but diagnose and fix bugs for apps across Texas, throughout the USA, and internationally. The work happens on your codebase and CI/CD pipeline, so your location doesn't matter — we can triage a report, reproduce the issue, and ship a fix from here wherever your users are.
Do you fix bugs for Houston businesses?
Absolutely, it's our home market. Our office is at 9800 Richmond Ave in the Westchase / Energy Corridor area, and we fix bugs and ship hotfixes for local businesses' apps. For urgent or complex issues we can meet in person to work through what's happening.
Do I need a full care plan, or can you fix just one bug?
Either works. We handle one-off fixes for a specific bug or crash, scoped and quoted on their own. But if bugs are a recurring reality — as they are for any live app — a monthly care plan is usually better value, because the same engineers stay familiar with your code and fixes get faster and cheaper over time.
Got a bug — or a fire — you need handled cleanly?
Book a free call and we'll look at what's breaking, tell you whether it's a scheduled fix or a same-day hotfix, and get the same engineers who'll learn your code on it. One-off fixes are scoped after a review; ongoing bug work starts around $800/mo.
Knowledge hub
From our knowledge hub
All articles →AI Automation
How to Reduce AI Voice Agent Latency
How to cut AI voice agent latency to sub-second, human-like turn-taking: where lag comes from (STT, LLM, TTS, network) and the fixes that actually work.
Read · 7 min →Web DevelopmentThe Auto Repair & Dealership Website That Books More Jobs
Auto repair and dealership websites that convert: online booking, fast mobile pages, reviews, and service pages that turn visitors into booked jobs.
Read · 4 min →SEOLocal SEO for Oilfield Services: Getting Found in Texas Energy Markets
Local SEO for oilfield services: optimize your Google Business Profile, build service and basin pages, and earn reviews to get found in Texas energy markets.
Read · 4 min →