We build AI & software that moves your business forward
Purple Hardstone is a high-tech engineering partner that designs, builds, and scales AI and custom software solutions — turning ambitious ideas into products your customers and teams actually rely on.
Technologies our engineers work with daily
What we build
AI & IT solutions for every stage of your business
From first strategy conversation to a production system your team depends on — we cover the full spectrum of modern software and AI engineering.
Our products
Subscription apps we build and run ourselves
We apply the same engineering to our own products: AI-powered apps for web, iPhone and Android, sold as simple monthly or yearly subscriptions.
StudyWithKeldra
An AI-assisted study and exam-preparation app for web, iPhone and Android: flashcards built from your own notes, spaced-repetition review, quizzes, mock exams and exam-readiness tracking for students and certification candidates.
- Study — $14.99/month or $89.99/year
- Exam Prep — $24.99/month or $119.99/year
Every new account gets a 7-day free trial with everything unlocked. Subscriptions renew automatically each month or year until cancelled.
SkyLingoSift
An AI-powered language-learning app for iPhone and Android: real spoken conversation practice with honest pronunciation scoring, grammar corrections explained in plain language, and vocabulary flashcards built automatically from your own conversations — in English, Spanish, French, German, Japanese and Portuguese.
- Premium — $6.99/month or $34.99/year
Every new account gets a 7-day free trial with everything unlocked. Monthly and Annual renew automatically until cancelled.
NexaVella
A business-management platform for beauty professionals — hairstyling, barbering, nail care, skin care, massage & spa and cosmetology: online booking and appointments, customers, staff, services and products, invoicing, SMS and email notifications, and an AI Business Assistant that answers customer questions from your own FAQs. Works on web, iPhone and Android.
- Starter — $29/month
- Professional — $79/month
- Enterprise — $149/month
Every new account gets a 7-day free trial. Plans renew automatically each month until cancelled.
Why Purple Hardstone
An engineering partner built for high-stakes results
We combine deep technical expertise with a genuine commitment to your business outcomes — not just shipped code.
15+ years of engineering experience
Our engineers have spent over a decade and a half building and scaling software across industries — you get senior expertise, not a learning curve.
Security & compliance by default
Every system we design treats data protection and compliance as a requirement, not an afterthought — protecting you and your customers.
Built to scale, not just to demo
We architect for real-world growth from day one, so the system that works for 100 users still works cleanly at 100,000.
Transparent, milestone-based delivery
You always know what's being built, when it will ship, and why — with regular demos and clear, honest communication throughout.
Partners after launch, not just at delivery
We stay engaged after go-live with monitoring, optimization, and support — because a launch is the start of the relationship, not the end.
Solutions matched to your budget
We right-size every recommendation to your stage and goals, so you get the highest-impact solution rather than the most expensive one.
How we work
A proven process, from first call to production
No black boxes. Every engagement follows a clear, collaborative process designed to de-risk delivery and keep you in control.
Discover & Align
We dig into your business goals, data, and constraints to define success criteria before a single line of code is written.
Design & Architect
Our engineers design a scalable, secure architecture and a delivery plan with clear milestones you can track.
Build & Validate
We build in short, testable increments — with continuous demos, QA, and feedback loops so there are no surprises.
Launch & Scale
We deploy with confidence, then monitor, optimize, and evolve the system as your business and usage grow.
FAQ
Questions we hear often
Absolutely — this is exactly where most engagements start. Our AI Strategy & Consulting service is designed to assess your data and workflows honestly, including telling you when a simpler, non-AI solution is the better call.
Yes. We act as your full technology partner — from strategy and architecture to development, deployment, and ongoing support — so you don't need an internal engineering team to get started.
Security and compliance are built into our process from day one: secure architecture reviews, least-privilege access, encryption in transit and at rest, and alignment with frameworks like GDPR, SOC 2, and HIPAA depending on your industry.
Most projects start with a short discovery phase to define scope and success metrics, followed by iterative development with regular demos, and a structured launch. Ongoing support and optimization are available after go-live.
Yes — integration is one of our core strengths. We regularly connect new systems with existing CRMs, ERPs, data warehouses, and third-party APIs without disrupting current operations.
Both. We scope fixed-price projects for well-defined deliverables, and offer dedicated team or retainer arrangements for ongoing product development and support.
Ready to build something worth talking about?
Tell us about your project — we'll reply within one business day with clear next steps, no obligation.