fexler.com

Apps and websites, built and kept running.

An entire organizational management platform, a hunting journal, a carpentry website, and one more on the way. Built and maintained in the EU.

Built: EVK app · HunTracker · toloajto.hu
Next: Drop
Platforms: iOS · Android · Web
Stack: Flutter · Cloudflare · Supabase

Work

4 products · 3 live · 1 in progress

EVK app

Organizational management platform

Live

73 members. One app. Zero spreadsheets.

The EVK app on an iPad, showing the professional dashboard, and on an iPhone, showing the member's finances

The official app of the EVK Szakkollégium at Corvinus University of Budapest. Members track their professional points, check their finances, vote and see the week's programmes in one place. Events, news and admissions information are open to anyone.

App Store

Google Play

members on one platform

288

reminder runs a day, every day

spreadsheets left to keep

89%

less time on administration, across EVK.¹

Every week, all teams and members together.

BeforeSheets, Forms, Looker Studio ≈38 h a week
With the EVK app ≈4 h a week

Spreadsheets, retired.

Points, fees, sign-ups and votes moved out of shared sheets and forms and into one app.

Native, not a wrapper.

Rewritten from a WebView app into one Flutter codebase for iOS, Android and the web.

On the Lock Screen.

Live Activities, started from the server, count down to what's next.

Every five minutes.

Fees due, sign-ups closing, programmes starting: the reminders send themselves.

Your dashboard, your order.

Drag a card, drop it where it belongs.

100

Monday, October 20

9:41

Pénzügyi modellezés Excelben hamarosan kezdődik ⏰now

Fél óra múlva kezdődik a Pénzügyi modellezés Excelben.
Kezdés: 18:00, helyszín: Klub

Ma lejár: Őszi tábor – 2 éjszaka 💳2h ago

• Őszi tábor – 2 éjszaka – 25 500 Ft (határidő: okt. 20.)

Pénzügyi modellezés Excelben7h ago

Ma van a Pénzügyi modellezés Excelben.
Kezdés: 18:00, helyszín: Klub

Platforms: iOS · Android · Web
Version: 2.3.2
Backend: Workers · D1

Flutter · Cloudflare

HunTracker

Hunting log · app and website

Live

Every hunt on the map. Even out of signal.

The huntracker.app website on a MacBook, with the HunTracker app's map screen on an iPhone in front

A hunter dreamed it up; we helped make it real. A digital hunting log. Record hunts, harvests and observations with photos and the story of the day, see what is in season in 16 countries, and connect with hunting friends. With Pro, record GPS routes on a satellite map and hunt together on one live map.

App Store Website Web app

Google Play Soon

countries' hunting seasons built in

languages

bars of signal needed to log a hunt

Hunt together, live.

The whole party on one map, in real time.

Three-way merge.

Edit offline on any device. Changes merge field by field when you're back.

Tracks with the screen off.

The route keeps recording in your pocket.

Terrain in 3D.

Satellite imagery over real elevation, so every ridge reads at a glance.

No passwords.

Platforms: iOS · Android · Web
Plans: Free · Pro
Backend: Supabase

Flutter · Supabase · Cloudflare

toloajto.hu

Website for Hérics asztalos

Live

Made to the millimetre. Built for search.

The site for a carpentry workshop making sliding doors, wardrobes and custom furniture. It replaced WordPress with a static build: no database, no plugins, nothing to patch. Quote requests go straight to the workshop.

toloajto.hu

13×

more impressions in Google Search²

2×

more clicks from Google Search²

plugins, databases or third-party requests

Every screen, its own design.

Not a shrunken desktop. Tablets fold the menu away; phones put Call and Get a quote under the thumb.

On screen in 0.66 seconds.

On a slow 4G phone, with nothing jumping as it loads. Google counts under 2.5 s as good.³

Quotes with photos.

Up to six photos of the space, sent from the phone straight to the workshop.

Found more. Chosen more.

62 local pages, each with its own title, description and structured data. Search noticed.

ImpressionsClicks

Platform: Web
Build: Static
Plugins: 0

Python build · HTML · CSS · PHP

Drop

Next product

In progress

Something new is being built. Details will be posted here when it is ready to show.

Platforms: TBA
Status: Building
Launch: TBA

Weekly administration across EVK, approximate: the finance team's 4 members about 2 hours each before and 10 minutes now; the 3 professional leads about an hour each and 5 minutes now; about 30 people in the teams and the professional committee about 30 minutes each and 5 now; all 73 members about 10 minutes each and 30 seconds now. Before: Google Sheets, Forms and Looker Studio; after: the EVK app.
Google Search Console, 5–14 Oct 2026, the new site's first ten days, against the ten days before on WordPress (impressions 50 → 654, clicks 11 → 23).
Measured on 17 Oct 2026 in Chromium with Lighthouse's mobile throttling (slow 4G: 150 ms round trip, 1.6 Mbps; processor slowed 4×), cold cache, median of three loads: largest contentful paint 0.66 s, no layout shift, 437 KB in 13 requests, all from toloajto.hu.

Contact

Have an idea worth building?

An app or a website you have been thinking about for a while, but never knew where to start? Send a few lines about it. Planning, design, development and launch are all covered, from the first sketch to the App Store and Google Play. Replies come in English.

Email [email protected]

Write an email

Work

EVK app

less time on administration, across EVK.1

Spreadsheets, retired.

Native, not a wrapper.

On the Lock Screen.

Every five minutes.

Your dashboard, your order.

HunTracker

Hunt together, live.

Three-way merge.

Tracks with the screen off.

Terrain in 3D.

No passwords.

toloajto.hu

Every screen, its own design.

On screen in 0.66 seconds.

Quotes with photos.

Found more. Chosen more.

Drop

Have an idea worth building?

less time on administration, across EVK.¹