OpenTaking new projects

Software built for your business.

I build websites, apps and systems for businesses of any kind and size that want to solve a problem with software. Selling online, taking orders and bookings or leaving spreadsheets behind. You tell me the problem and I solve it.

Get a quoteSee my work
Person packing an online order and scanning the label with a phoneDental clinic receptionist checking the day’s appointmentsTwo people reviewing a dashboard of numbers on a laptop
Warehouses, clinics, offices. Every business has its own problem
Services

Websites, apps and systems

Three ways to get your business in order. Start with one and add the others later, they all work together.

Web

A website so people can find you

Your opening hours, your menu or catalog and a button straight to WhatsApp.

  • Designed for your shop
  • Shows up on Google and Google Maps
  • WhatsApp button and map
  • You change prices and photos
Retail · services · professionalsI want a website
App

An app for your regulars

Orders, bookings or loyalty points on your customers’ phones.

  • Native iOS, Android if you need it
  • Live bookings and orders
  • Notifications when something changes
  • Published on the App Store and Google Play
E.g. 200+ bookings at Cuarto DetonaoI want an app
System

A system to retire the spreadsheets

Inventory, sales and stock in one place, connected to your online store.

  • Stock up to date, no spreadsheets
  • Sales, expenses and losses
  • Works offline
  • Connected to your website
E.g. 2M CLP in month one at SaronnaI want to get organized
Results

Numbers from real projects

2MCLP

in sales the first month using the app

Saronna
200+

bookings handled live

Cuarto Detonao
40%

fewer redundant clicks when taking orders

Etnia Barcelona
1,000+

downloads on iOS

Prend
Work

Projects already running

Every project started with a concrete problem. Here’s what was there, what I built and what changed.

2M CLPin sales, first month
SystemRetail · Santiago

Saronna

The problem
She ran the whole business on spreadsheets: inventory, sales, expenses and losses for more than 100 products. Keeping stock up to date across her online stores was slow, and there was always the risk of selling something that was already gone.
What I built
An app on her iPhone to record everything in one place, even offline, connected to a new online store. Whatever changes in the app shows up in the store right away.
The result
She left the spreadsheets behind and passed 2M CLP in sales the first month. The catalog is always up to date and the same unit can no longer be sold twice.
See the store
40%fewer redundant clicks
AppEyewear · Barcelona

Etnia Barcelona

The problem
Sales reps for an international eyewear brand take orders from their customers across Europe, the U.S. and Canada, often without good signal, and the process had too many steps.
What I built
As part of a team of six developers, I redesigned the customer and order screens of their iPad app and kept it working offline, so reps can sell wherever they are.
The result
40% fewer clicks to take an order, and an app that keeps working with no internet.
See Etnia Barcelona
200+bookings
SystemSchool fundraiser · Santiago

Cuarto Detonao

The problem
A school class wanted to raise money selling roses with personal dedications. Tracking orders, dedications and payments by hand was going to be chaos.
What I built
A site to reserve a rose and write the dedication, and an app for the class committee to see orders and payments in real time.
The result
More than 200 reservations handled live, all in one place and with no spreadsheets.
See the site
1,000+downloads on iOS
AppOwn product · iOS and Android

Prend

The problem
Lending money to friends or family is easy. Remembering who owes you, how much and by when, not so much.
What I built
An app that keeps track of every loan and reminds both people of the due date, the one who lent and the one who owes.
The result
More than 1,000 downloads on iOS. That demand took it to Android too, where it passed 200 downloads in its first month.
See it on the App Store
AppOwn product · App Store

Tatakae

The problem
Training at home with the phone on the floor: you have to stop and tap the screen to see what comes next, count reps in your head and never really know if you are improving.
What I built
An app you use without touching the screen. A coach guides you through programs and routines you create yourself, tells you which exercise comes next, counts your reps with the camera, and a gesture starts or stops each set.
The result
Published on the App Store, with a coach that analyzes your progress without your data leaving the phone, rankings with friends and a site in four languages.
See it on the App Store
AppPrototype

Happy Donuts

The problem
At a donut shop, putting together a custom order by phone or at the counter is slow and easy to get wrong.
What I built
An app to pick and customize donuts from your phone and see each store on a map. Orders are saved and updated in real time.
The result
A working prototype designed for local shops, ready to be adapted to a real business.
How I work

Simple, no fine print

You don’t need to know anything about tech. You know your business, I handle the rest and explain it in plain words.

yeikobuProject receipt · sampleN° 000231Website with catalog
  • Custom designincluded
  • Catalog with photos24 items
  • WhatsApp buttonincluded
  • Google Maps listingincluded
  • Price editing panelincluded
  • Tweaks after launch30 days
Delivery3 weeks

Sample scope. Every business gets its own quote.

  1. We talk

    You tell me how your business runs today, in person or on WhatsApp.

    One call

  2. I show you the plan

    A proposal with what’s included, the timeline and the price. No fine print.

    Week 1

  3. I build it

    You get progress updates so you can see it take shape and weigh in.

    Weeks 2 and 3

  4. We launch

    It goes live and I show you how to change prices, photos and hours.

    Launch

  5. I stick around

    Fixes, changes and improvements as the business grows.

    After
Portrait of Jacob Aguilar
About

Hi, I’m Jacob

I care more about the problem than the technology. Almost every app I’ve built came from someone with a messy process: a sales rep taking orders with no signal, a shop writing stock down on paper, me trying to remember who I’d lent money to.

I know how to work on a team and I know how to work alone, which isn’t the same thing. At Etnia there were six iOS devs, code reviews and sprints. On Prend and Tatakae there’s nobody else to blame.

Right now I’m deep in Java and backend, because I love learning new things.

Outside work: inline skating, gym and calisthenics, which is exactly where Tatakae came from.

5+
Years with Swift
2
Published apps
14
Projects built
ES·EN·PT·JP
Languages
Contact

Tell me about your business

Write to me however suits you. You don’t need to know about tech, just tell me what you want to fix.

  • Emailaguilar.campos.jacob@gmail.com

Or leave me a message

Optional.