App Maintenance & Support Services in Nigeria
SLA-backed monthly retainers for live mobile apps, web applications and custom software — plus full code takeover when the developer who built it has gone quiet.
Your App Is Live. Who Is Keeping It Alive?
Shipping an app is the easy half. The hard half starts the day after launch, when real users hit it, Android and iOS keep shipping new versions, the stores keep changing their rules, and the server quietly runs out of disk at 2am on a Saturday.
App maintenance and support is the ongoing engineering that keeps a live product healthy: bug fixes, security patches, OS and store updates, monitoring, tested backups and small monthly changes. Musskart Technology Limited provides it in Nigeria as an SLA-backed monthly retainer from ₦75,000 per month — for apps we built and, just as often, for apps somebody else built and then abandoned.
If your developer has stopped answering messages, skip to the code takeover section.
250+
Projects Delivered Since 2020
Asaba + Abuja
HQ In Asaba, Second Office In Abuja
Registered
A Registered Nigerian Company
From ₦75k
Per Month, SLA-Backed Retainers
We reply on WhatsApp within minutes. Send a link or a screenshot of the error and we will tell you what is likely wrong before you pay anything.
What App Maintenance and Support Actually Covers
"Maintenance" is a vague word used to sell very different things. Here is exactly what sits inside a Musskart retainer, so you can measure any other quote against it.
Bug fixes and defect triage
A crash, a screen that will not load, an order that never reaches the dashboard. We reproduce it, fix the root cause rather than the symptom, and ship it — triaged by severity, so what costs you money is handled first.
OS and app-store updates
Both stores enforce minimum SDK targets, permission rules and privacy declarations. We rebuild against current SDKs, refresh signing keys and certificates before they expire, and push releases so your app is never blocked from updating.
Security and dependency patches
Your app sits on dozens of third-party packages and vulnerabilities are announced constantly. We track advisories for your stack, upgrade affected packages, patch the framework and rotate exposed keys.
Server and uptime monitoring
Uptime checks, error-rate alerts, disk and memory headroom, SSL expiry, database health and queue backlogs — so we know something has tripped before your customers call you.
Backups and recovery testing
Automated database and file backups stored off the production server, and periodically restored to prove they work. An untested backup is a rumour, not a safety net.
Small features and changes
A new bank to add, a field to capture, a report your accountant now wants, a new admin role. Retainers include monthly engineering hours for exactly this, so you are not raising a project every time the business shifts.
Why a Live App Decays If Nobody Touches It
The ground underneath your app moves constantly, so an untouched app gets worse every month even if not one line of its code changes.
Operating systems move on
New Android and iOS releases change permissions, background execution and storage access. Features that worked last year start failing silently on the newest phones — the ones your best customers are buying.
Stores enforce new policy
Play and the App Store raise minimum SDK targets and demand new data-safety disclosures. Miss a deadline and your listing can stop accepting updates, or be pulled entirely.
Certificates expire, APIs change, data grows
SSL and push certificates, API keys and signing credentials all expire, and one of them can take an app offline on an ordinary Tuesday. Gateways deprecate old endpoints. Tables that were fast at ten thousand rows crawl at two million.
"My App Developer Disappeared" — Code Takeover
One of the most common situations we are called into. A freelancer or small team builds the app, gets paid, then stops responding. An agency folds. Meanwhile you have a live product, paying users, and nobody who can change a line.
It is solvable in almost every case. The first step is an honest assessment of what you actually own.
You have the source code
Best case. We audit the repository, get it building on our machines, document it, take over deployment and move you onto a retainer.
You have the server, not the code
Common. For most web and backend systems the running code lives on your server and can be recovered, then placed under version control with a real deployment pipeline.
The accounts are in their name
Play Console, App Store, hosting or domain registered to the developer. We work the ownership-transfer routes with you, and plan a clean re-publish if transfer proves impossible.
Before spending anything, gather what you can find: source code, hosting logins, domain access, database credentials, store logins and any handover notes. If you have none of it, say so — we start from what exists.
How a Takeover Works, Step by Step
Every inherited codebase runs through the same five stages, with a decision point after stage one.
Step 1 — Code and infrastructure audit
We read the codebase, run it locally and map the system: architecture, database, integrations, hosting, dependency health and security exposure. You get a written report grading the code, listing urgent risks and estimating stabilisation cost — yours to keep whether or not you hire us.
Step 2 — Access recovery and clean handover
We inventory every account and credential, help you recover what is held in someone else's name, move the code into a repository you own and rotate every exposed secret. This alone prevents the same crisis twice.
Step 3 — Stabilisation
We fix what is actively hurting you: crashes, broken payments, security holes, failing builds. The goal is a system that is safe to touch, not a rewrite.
Step 4 — Documentation and targeted refactor
We write what the original developer never did: setup, environment variables, deployment steps, API notes and a plain-English map of the system. Where code is dangerous to work in we refactor it — only where it earns its cost.
Step 5 — Move onto an ongoing retainer
Once stable and documented, the app moves to a monthly plan below with a named engineer and an agreed SLA. Most takeovers get there in two to six weeks.
What the first two weeks typically look like
Days 1–2: audit kickoff and access collection. Days 3–5: audit report with a prioritised risk list and a fixed stabilisation quote. Week 2: credentials rotated, repository transferred into your ownership, urgent crashes fixed, monitoring and backups on. Want this run on your app? Send us the details.
Monthly Retainer Tiers and SLAs
Pricing is in Naira, per month, with no long lock-in. These are published starting points — the exact figure depends on how many apps you run, how complex the backend is, and how fast you need us to respond.
Essential Care
₦75,000 / month
For: one live app with steady traffic.
Uptime and error monitoring, automated backups with restore tests, security and dependency patches, bug fixes, minor content changes, monthly health report. SLA: next-business-day response, Monday to Friday.
Growth Support
₦150,000 / month
For: apps with real growth and a business depending on them.
Everything in Essential, plus OS compatibility and store release management, monthly hours for small features, performance tuning and a named engineer. SLA: four-hour response on critical issues in business hours.
Business-Critical
₦300,000 – ₦500,000 / month
For: revenue platforms where downtime costs money hourly.
Everything in Growth, plus a larger engineering allocation, priority triage, agreed out-of-hours and weekend cover, deeper security review and a scheduled review call. SLA: fastest tier, agreed in contract.
Ours is a response-time commitment: how quickly a human engineer who knows your system acknowledges the problem and starts work. No honest firm promises that software never breaks. What we promise is that when it does, you are not left messaging into silence — which, if your last developer vanished, is the part that matters.
For the full picture of what Musskart charges, see our pricing page. If your product is a conventional business site rather than an app, our website care plans start considerably lower and are the right fit instead.
Takeover and Refactor Project Pricing
One-off takeover and stabilisation is priced separately from the retainer, because effort depends on the state of the code. The range runs ₦200,000 to ₦2,000,000, with a fixed figure after the audit — never an open-ended hourly meter.
₦200,000 – ₦500,000
Clean handover. Code available and reasonably written, accounts recoverable. Audit, documentation, credential rotation, deployment pipeline and a handful of fixes.
₦500,000 – ₦1,200,000
Messy inheritance. Partial or undocumented code, outdated framework, no tests, security issues. Real stabilisation and targeted refactoring before the app is safe to extend.
₦1,200,000 – ₦2,000,000
Deep rescue. Severely outdated stack, unstable in production, data-integrity problems, or major modules to rebuild against the existing database while the app stays live.
Occasionally the honest answer is that a rebuild costs less than the rescue. When the audit says so, we quote both options side by side.
What Is Included, and What Is Quoted Separately
Inside your retainer
Bug fixes and crash resolution, security and dependency patching, OS and store compatibility, release builds and submissions, monitoring and incident response, backups and restore tests, performance tuning, minor UI changes and a monthly written report.
Quoted as a separate project
Whole new modules or user types, a new payment or logistics integration, a full redesign, migrating framework or hosting provider, an admin portal that does not yet exist, or a second app. Fixed price agreed in advance.
Third-party costs — hosting, domains, store fees, SMS credits and gateway charges — are billed by those providers directly to you, in your own accounts. We never mark them up.
You own the source code. Everything we write belongs to you, sits in a repository under your account and comes with documentation. If you ever leave Musskart, you leave with a working, documented system.
Technologies We Maintain
Our senior engineers work across the stacks most common in Nigerian apps and custom platforms, so we can pick up an inherited codebase quickly.
If your app runs on something not listed, ask anyway — we will give you a straight answer.
Who These Retainers Are Built For
Startups with a live product
You launched, users arrived, and you need reliable cover without carrying a full-time salary — a senior team on call for a fraction of one developer's monthly cost.
Businesses running internal software
An operations, inventory, HR or logistics system staff depend on daily. When it stops, work stops — so response time is the whole point.
Owners abandoned by a developer
You paid, the app exists, and the builder has gone silent. We audit, take over and stabilise — and put every account back in your own name.
Teams whose developer has left
Your in-house engineer resigned and the knowledge went with them. We absorb the codebase, document it and keep things running.
Weighing a retainer against building a team? Our guide to hiring app and software developers in Nigeria covers what senior engineers cost here.
How to Get Started This Week
1. Message us on WhatsApp
Send the app name or link, the platform, what is broken, and whether you still hold the code and accounts. We reply on WhatsApp within minutes during working hours.
2. Free 20-minute assessment call
We talk through what you own, what is failing and how urgent it is. If a paid audit is not necessary, we say so.
3. Written proposal
The recommended tier, any takeover cost as a fixed figure, the SLA, and what falls inside versus outside scope — in writing, in Naira.
4. Onboarding and first month
Access handover, monitoring and backups switched on, urgent issues cleared, documentation started, named engineer assigned.
We work with businesses across Nigeria — Lagos, Abuja, Port Harcourt, Asaba and beyond. Maintenance is naturally remote, handled over WhatsApp, email and video calls, with our teams working from our Asaba headquarters and our Abuja office. Where a client needs on-site handover sessions, we travel, priced up front.
Frequently Asked Questions
Related Musskart Guides
- Website Care & Maintenance Plans in Nigeria — the lighter monthly plan for business sites
- Hire App & Software Developers in Nigeria — senior Flutter, React Native and web engineers
- Musskart Pricing — what development and support cost in Naira
- Cost of App Development in Nigeria — the full 2026 guide
- Project Portfolio — what we have built and support
- Contact Musskart
- Hire React Native Developers in Nigeria
- Paystack and Flutterwave integration and go-live fixes
Get Your App Under Proper Support
Whether your app needs steady monthly cover or your developer has vanished and you need someone to take over the code, start with a message. We reply on WhatsApp within minutes — and we will tell you honestly what your app needs before quoting anything.
