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Top-Notch Apps

We build custom web and mobile apps that help businesses scale.

📸 Recent Projects

Case study: Tākaro, the Te Reo Māori card game

Why build custom software?

Tailored for you

We’ll build you the tools, systems and capabilities required to meet to your exact needs and challenges.

Flexible & scalable

We create systems that stay efficient regardless of usage and we’ll continue to modify and improve these as you business needs change.

Productivity & new possibilities

Save time and money by automating tasks and eliminating manual processes - or enable entirely new products and services.

Gain an edge

Deliver a superior product or service by applying data-driven insights and streamlining customer experiences.

What makes us different?

Extremely clear pricing

No more disappearing freelancers or expensive agencies that charge you an arm and a leg upfront and for every little scope change or addition.

Fast and fully async

We’re extremely fast thanks to years of experience, ultra efficient processes and completely asynchronous communication - no more meetings!

World class skills

We’ve built apps used by hundreds of thousands of people and keep close ties to Silicon Valley. We use the same tools as the world’s top tech companies.

We do the whole process

We’ll guide you from the planning stage, all the way through to design, delivery, testing, and ongoing improvement. No need to hire a whole team.

What our clients say

"Top notch app development!"

Eliot Jessep
Founder at Game Kings

"E kaha ana taku whaikupu kia mahi ki tō Rikus taha me tō hinonga te whai ake nei."

Aroha Turner
Founder at Ōkupu

"Rikus is trustworthy, dependable, and innovative. Thanks for all your help Rikus"

Thomas Nabbs
Founder/Director at The Waterboy

"Zelta are a huge asset for us. Timely, well-crafted apps and dev with good comms."

Dan Webster
Founder & Director at Ingot

How we work

1. Free introduction call

Let’s discuss your project in detail and go over your requirements, budget, and timeline. We will explain our process, answer any questions you have, and see if we’re a good fit.

3. Scope planning & UX design

We’ll complete a “Product Plan”, covering the goals, requirements, user experience and technical specs and review this until everyone’s happy.

4. User interface design

We’ll design the visual aspects of all the screens and features and go through a review process until you are satisfied with the design.

5. Active software development

We’ll build out your software system to be “feature complete” and allow continuous testing as early as possible - this allows us to get feedback and adapt quickly.

6. Launch and steady improvement

We’ll go live and lower your subscription costs to our steady improvement plan. Any teething issues will be sorted out and we’ll iterate on any features that need improving based on user feedback.

7. Long-term stable support

Once everything is running smoothly, we’ll lower your subscription costs again to our stable support plan. We’ll continue to sort out the hosting, maintenance, performance monitoring, fix any bugs and provide technical support.

Who are we?

Zeltta was started in 2020 in Hamilton, New Zealand by Rikus Wiehahn. Our goal is to become the best agency in New Zealand at making custom web and mobile apps for digital products and services. We believe that software can have insane ROI when done properly and we are devoted to our mission of helping businesses harness this awesome potential. Rikus still does the majority of the work but he brings in external contractors when some extra hands are needed.

Our pricing plans

How it works

We will give you a fixed price quote for the initial build.
On launch you’ll shift to the steady improvement plan.
Once you don’t need additional changes, you’ll switch to stable support.
If you need changes in future, we'll shift back to steady improvement while we work on them.

Active Development

Full-speed active design and development to deliver your digital product or service as quickly as possible. Working with you to plan, design, develop and launch your product or service.

Price varies

Fixed price quote

40% deposit, 60% on delivery

Full design & development

Allowance for changes

Typically launch in 3 - 6 months

Steady Improvement

Once your product or service has launched, we'll work with you to continuously improve it. Using a prioritized roadmap and constant user feedback to make sure we're always chipping away at the most important things.

$4796 / month(excl. GST)

Flat monthly rate

Easy credit card payments

Unlimited additions and changes

Technical support included

Switch plans at any time

Stable Support

Once you product or service is running super smoothly, we'll keep it that way. Providing technical support, hosting and ongoing maintenance so that you can focus on your business.

$597 / month(excl. GST)

Flat monthly rate

Easy credit card payments

Hosting & tech support included

Bug fixes & maintenance included

Switch plans at any time

We've proudly served these amazing clients

Frequently asked questions

How much will my project cost?

It depends on the scope of your project. We'll give you an estimate of how many months it will take to build - this will give you a good idea of the cost.

How long will my project take?

It depends on the scope of your project, but we typically launch in 3 - 6 months from the start of active development.

What is your hourly rate?

We don't charge hourly rates. We charge a flat monthly rate for each stage of your product's life-cycle.

What is your minimum project size?

We don't have a minimum project size. We love working with startups and small businesses - if it's a small project we can give you a discount on hosting and support.

How do I request additions or changes?

You can propose a new feature on the project roadmap or create a post on the project forum describing the change you'd like to make.

How do I cancel my subscription?

You can cancel your subscription at any time, just let us know and we'll cancel it within 48 hours.

What if I don’t like the product plan, or designs etc?

You are allowed unlimited revisions, we'll work with you to make sure you're happy with everything before we start development.

Do I have to pay a deposit up front before work starts?

No, we don't charge any upfront deposits, we only charge via monthly subscriptions.

Why wouldn’t I just hire a full-time developer?

A good full-stack developer costs north of $120k per year (and good luck finding one!). With us, you'll get one of New Zealand's top developers for a fraction of that cost.

Do you do refunds?

Due to the high quality nature of the work we do not offer refunds. However, unlike most dev agencies, we don't trap our clients with large 30-50% upfront deposits (often $20k+ before any work is done). We only charge via monthly subscriptions, so you can cancel at any time.

Who does the work?

Believe it or not, Rikus does almost all the work himself, in rare cases he'll let you know that he's bringing in a specialist to help out.

What level of involvement does my company need to have?

It doesn't have to be time-intensive. In our experience, the more specific you are about the problem you're trying to solve, the better the solution will be. We'll put a lot of effort into understanding your business and your customers.

What technologies and programming languages will you use?

We mostly use Next.js, React, React Native, Node.js, TypeScript, GraphQL, Prisma and PostgreSQL.

What are the risks? How can we ensure it meets our needs?

The biggest risk with custom software is building something that nobody needs. We try to mitigate this risk by seeking early and constant user feedback and re-prioritising our roadmap to ensure we're always focused on the most important things.

How are subscriptions calculated?

Subscriptions are charged at the end of each month and calculated based on how many days you were on each plan during that month.

Return on investment calculator

How it works

This calculator is designed to give you a rough idea of the Return on Investment (ROI) of automating a particular task. Please note it may vary considerably from the actual ROI of your project. Based on the number of staff doing a task, their hourly rates, and daily hours saved.