Blog | Onsharp

5 Common Custom Software Challenges

Written by Haley Hermanson | April 10, 2025

(5 Minute Read)

Custom software should solve problems, not create new ones. 

Whether you're building a new customer portal or trying to streamline an internal process, custom development gives you the power to create exactly what your business needs. But getting there isn’t always easy. 

Scope creep, miscommunication, and integration challenges can derail more than your timeline. They can throw off hiring plans, frustrate frontline teams, and quickly add unplanned costs. 

Here’s a look at five roadblocks to watch for and how to keep your next software project running smoothly from start to finish. 

Miscommunication Between Developers and Clients 

When communication breaks down, so does progress. 

One of the most common reasons custom software projects stall (or go sideways) is misalignment between stakeholders and developers. Maybe the scope wasn’t fully clear. Maybe timelines shifted, and no one updated the team. Either way, the result is the same: wasted time and a product that doesn’t deliver. 

Here’s how to keep everyone on the same page: 

  • Set a regular check-in rhythm. Weekly or bi-weekly meetings help catch misalignment early.
  • Keep language simple. Not everyone speaks in user stories and sprint cycles.  Clarity matters. 
  • Write it down. Decisions and deliverables should always be documented. No guesswork. 
  • Encourage open feedback. The best software gets built when clients speak up, and developers listen. 

When teams understand the goals and stay in sync, the end result reflects what you actually need. Not what someone thought you said six weeks ago. 

 

Scope Creep

Small changes can turn into big detours.  

It usually starts with a “quick tweak.” Then another, and then a new feature request. Before long, your clean, scoped project has turned into something completely different, with blown timelines and budgets to match. 

That’s scope creep. And it can quietly derail your project if you’re not careful. 

Here’s how to keep it in check: 

  • Start with clear goals. Everyone should agree on what success looks like before any work begins. 
  • Document the scope. Write down what’s included and what’s not. Define the key features and functions that need to be in your minimum viable product (MVP), and put the rest on a backlog for future additions and improvements.  
  • Have a change process. Requests are inevitable. What matters is how you handle them. Assess the impact, adjust timelines if needed, and get alignment before moving forward. 
  • Keep stakeholders in the loop. Surprises are rarely good news. Consistent communication helps everyone see how a small change affects the big picture. 

When you stay intentional about scope, your team can move faster and finish stronger. We’ve seen clients delay product launches by weeks due to scope creep that started with a “quick fix” and ballooned into a full redesign. It doesn’t have to be that way. 

 

Integration with Existing Systems

New software should work with your current systems, not against them. 

One of the biggest challenges in custom development is making sure the new solution plays nicely with what you already have. Whether it’s your ERP, CRM, or homegrown tools, integration isn’t just a “technical” step. It’s a business-critical one. 

When integration is treated like an afterthought, workflows break, data gets messy, and users lose confidence. 

To avoid the chaos, here’s what helps: 

  • Start with a system audit. Know what you’re working with, how systems connect, where the data lives, and what your team actually uses day to day. 
  • Build an integration roadmap. Think through how the old and new systems will work together, step by step. 
  • Take a phased approach. Rolling things out gradually allows time for testing, feedback, and adjustments without shutting down operations. 
  • Loop in end users early. Your team knows the workarounds and bottlenecks better than anyone. Their input can surface potential issues before they become real problems. 

Smart integration keeps your business running smoothly while setting you up for long-term success. 

 

Quality Assurance and Bug Testing

If you skip testing, you’re just guessing. 

Even the best-planned software projects can run into issues if testing gets rushed or overlooked. Bugs happen. It’s how you catch and fix them that makes the difference. 

Without thorough quality assurance, small problems can slip through the cracks and cause big headaches later on. That’s why testing needs to be part of the process from the very beginning and not just a final checkbox before launch. 

Here’s how to keep things tight: 

  • Automate where you can. Automated tests are a great way to catch glaring issues early and often. 
  • Bring in real users. Internal testing is important, but actual users offer a whole different perspective. Let them click around and give feedback. 
  • Test after every change. Regression testing helps ensure new updates don’t accidentally break something that was already working. 

Every bug that makes it to launch becomes someone’s job to fix, and usually while they are juggling everything else. QA isn’t just about good code; it’s about protecting your team's time post-launch. 

 

Security Issues

Security isn’t optional, it’s expected. 

When you’re building custom software, security can’t be something you bolt on at the end. With rising cyber threats and growing data privacy concerns, your customers and internal teams are counting on you to get it right. 

A single vulnerability can lead to data loss, compliance issues, or a hit to your brand’s reputation and those are hard to bounce back from. 

Here’s how to build with security in mind: 

  • Audit early, audit often. Regular security reviews help catch weak spots before they become liabilities. 
  • Use encryption everywhere. Whether it’s data in transit or at rest, protect it by default. 
  • Lock it down. Implement strong authentication and role-based access so the right people see the right things and nothing more. 

When security is baked into every stage of development, you don’t just reduce risk;  you build trust. 

Wrapping it Up

Custom software can be one of the best investments you make in your business, but only if the process behind it works just as well as the product. The most common issues, miscommunication, scope creep, tricky integrations, QA gaps, and weak security, aren’t just technical problems. They’re business risks. 

The good news? They’re also preventable. 

With the right planning, clear communication, and a development partner who understands your goals, you can deliver software that fits your business, scales with your team, and actually gets used. 

No surprises. No missed expectations. Just the right solution built the right way.  

Want to go deeper? 
Check out our post on The Fundamentals of Custom Software Development to get a clearer picture of what it takes to build software that works for your business and your bottom line.