

Written by Ashok Chintagunta, MS Computer Science, Louisiana Tech University
CTO & Software Engineer, AI and Automation
Published August 10, 2026
Building a messaging app means solving real-time delivery, contact sync and store approval — the three problems that sink most first-time app projects.
Xter Texter went through the full cycle with us: user experience design, application development, and the backend that keeps messages moving reliably.
Project at a glance
- Project
- Xter Texter messaging application
- Category
- Software / mobile
- What we delivered
- UX design, app development, backend infrastructure
What the client said
★★★★★
“I discovered LA NPDT when I was looking for a firm to develop a mobile app. I was really impressed with the way they listened and the way they made sure they understood what I was trying to communicate.
There are many steps if you continue to pursue any project, but along the way LA NPDT has helped and guided me when they were not expected or required to. If you have been holding back on your dream project, get off the couch and go get your dreams! I highly recommend a consultation with LA NPDT to get a great perspective on your project.”
The client

The challenge

Our solution
The result



Custom software development at a glance
| Scope | Requirements, UX, application build, testing, deployment |
|---|---|
| Product | Messaging and outreach software with contact management |
| Deliverables | Specification, working application, source code, admin documentation |
| Typical timeline | 3-8 months |
Off-the-shelf stops working at the edges
Companies commission custom software when their process no longer fits a subscription tool — a compliance rule, an odd data model, a workflow that three departments share. The risk is building an expensive replica of the tool they already rejected. We spend the first phase writing down the specific behaviors that off-the-shelf cannot do, and design around those.
How we delivered Xter Texter
We turned the client's process into a written specification, designed screens around the tasks people repeat dozens of times a day, and built in increments the client could use early. Testing covered messaging edge cases — failures, retries, opt-outs — before launch, and the handoff included documentation so an internal admin could run it.
Frequently asked questions
How do you scope custom software?
A short discovery phase produces a specification and estimate. You can take that document elsewhere if you choose — it is yours.
Will we be dependent on you for maintenance?
No. Code, infrastructure and documentation are delivered to you; we offer support but you are not locked in.
Can you integrate with our existing systems?
Yes — CRMs, ERPs, payment processors and internal databases through their APIs or direct connections.
What messaging app development actually involves
1. Design the conversation flow first
A messaging app lives or dies on how fast a user goes from opening the app to sending a message. That flow gets designed and tested before any other screen.
2. Build delivery to be reliable, not just fast
Messages must arrive on bad connections, after app restarts and across devices. The backend architecture for queuing and retry is where messaging apps are won or lost.
3. Handle contacts and privacy deliberately
Contact sync triggers permission prompts and store privacy review. How the app asks, and what it does with the data, has to be designed and disclosed correctly.
4. Plan for store review from day one
Messaging features get extra scrutiny in app review. Metadata, permission justifications and demo accounts are prepared before submission, not after a rejection.
| Area | Simple approach | Full approach |
|---|---|---|
| Delivery | Polling server | Real-time push infrastructure |
| Platforms | One platform first | iOS and Android together |
| Contacts | Manual entry | Address book sync with permissions |
Questions about this project
Straight answers from the engineers who ran the build. Have a different question? Ask us directly.
Talk to an engineerHow much does it cost to build a messaging app?
A focused messaging app typically runs $50,000 to $150,000 for the first release, with real-time backend infrastructure being the main cost driver.
How long does messaging app development take?
Four to eight months for a first release including backend, plus store review time.
Should I launch on iOS or Android first?
Wherever your audience is — for consumer apps in the US that usually means iOS first or both together via a cross-platform build.
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