New App

HalNapló PRO

Name: HalNapló Pro
Author: ViaClean Kft.

The Hungarian angler's digital companion

The only app that does everything an angler needs. A professional, AI-powered fishing application developed for Hungarian anglers.

The app combines catch logging, automatic fish measurement, species recognition, fishing waters database, interactive map and catch assistant – in a single, beautifully designed iOS application.

4.8

Rating

10K+

Downloads

50+

Fish Species

Coming Soon – from 2026.02.25

Main Features

Discover the full feature set of HalNapló PRO

AI Fish Recognition

Take a photo of the fish and the app instantly identifies the species using artificial intelligence.

AI Size & Weight Estimation

Accurate size and weight estimation from a photo – no measuring tape or scale required.

Catch Statistics

Detailed statistics of your catches: species, sizes, times, locations.

Fishing Map

Interactive map for marking and sharing the best fishing spots.

Waters Database

Comprehensive database of local waters with regulations and useful information.

Cloud Sync

Your data is safe in the cloud – accessible from any device, anytime.

AI-Powered Automatic Measurement

Forget the traditional measuring tape!

HalNapló PRO's camera automatically recognizes the bank card placed next to the fish as a reference point, and uses Vision technology to identify the fish contour.

How does it work?

Open the camera – a ghost frame appears on screen showing where to place the bank card and the fish

Take a photo – the app automatically jumps to the analysis step

Automatic card detection – the app recognizes the 4 corners of the bank card in the image

Automatic fish contour recognition – finds the nose point and tail point of the fish

Instant size calculation – calculates the fish length in cm relative to the card reference size

Weight estimation – estimates the fish weight in grams based on the species-specific W=a×L^b formula

Quality score – indicates measurement reliability (perspective correction, blur, card size)

If automatic recognition isn't perfect, simply tap the image to manually adjust the nose and tail points.

AI Fish Recognition

Don't know what fish you caught? Take a photo and the AI will identify the species!

Species name in Hungarian and Latin

Confidence level in percentage

Detailed description of the species

Habitat information

Best bait tips

Size limit and protection status with warnings

Recognition features – what the AI focused on

Identification happens in 3 phases: upload → analysis → matching, with detailed results at the end.

Digital Catch Diary

All your catches in one place, organized and synchronized.

Each entry contains:

Photo – locally saved, synchronized

Fish species – Hungarian and Latin name

Length (cm) and weight (g) – measured or estimated

Location – GPS coordinates and water body name

Equipment – bait, method, hook

Moon phase – automatically calculated

Weather – temperature, pressure, wind

Notes – free text comments

Personal record marking

Sync status (Firebase cloud sync)

Search catches by species name, water body name, or any data field.

Documents – Permits & Catch Log

Fishing Permit Management

Add permits – name, issuer, water area, permit number, validity dates, notes

Validity indicator – green (valid) / red (expired) badge

Delete – by swiping, with confirmation

Electronic Catch Log

Chronological list of all catches

Exportable format for official inspections

Fish Species Database

Complete Hungarian fish species encyclopedia, searchable and filterable.

Filters:

Category: Carp family, Predators, Salmonids, Other

Search by Hungarian or Latin name

For each species:

Hungarian and Latin name

Detailed description

Habitat information

Best season and bait

Size limit and protection status

Closed season (if any)

Record weight and length

Fun fact

Species-specific weight estimation parameters

Interactive Fishing Map

Your personalized map of fishing spots.

Point types:

Catch – where you caught a fish

Feeding – feeding spots

Promising spot – high potential locations

Parking – parking options

Entrance – access points

Other – anything else

Functions:

Add point – coordinates, name, type, fish species, bait, method, note

Favorites – star your best spots

Filters – point type, favorites only

List view – all points in table format

Details – edit, delete, toggle favorite

GPS location – automatic current position

Fishing Waters Database

Detailed catalog of Hungary's best fishing waters.

Filters:

Region: Transdanubia, Great Plain, Northern Hungary, Budapest area, etc.

Water type: Lake, river, canal, oxbow, gravel pit lake, reservoir

Search by name, location or fish species

For each water:

Name, location, region

Rating (1-5 stars)

Area (km² / ha)

Main fish species

Permits and prices

Detailed description

Fishing tips

Services and infrastructure

Link to horgaszjegy.hu for online ticket purchase

Catch Assistant

Species-specific fishing guides, from beginner to expert level.

Difficulty levels:

BeginnerIntermediateExperiencedExpert

Each guide includes:

Technique – detailed fishing method description

Best baits – by season and type

Best time – time of day and season

Habitat – where to find the fish

Feeding tips – how to attract them

Pro tip – experienced anglers' advice

Common mistakes – what to avoid

Recommended gear – rod, reel, line, hook

Partner integration: Csöri Csali Fishing Shop (Esztergom) – direct link for equipment purchase.

Modern, Elegant Design

Warm, natural color scheme (beige base, dark blue accents, gold highlights)

Glass card design elements for a modern, clean appearance

Animated transitions and visual feedback

Intuitive 5-tab navigation:

Catches – home, catch list, statistics

Fish Species – encyclopedia

Measure – record new catch

Documents – permits, catch log

Profile – settings

Security & Privacy

Firebase Authentication – secure login with email/password

Firebase Firestore – cloud sync for data

Local storage – offline operation possible

GDPR compliant – full EU data protection compliance

Account deletion – all data deletable with one tap

Multi-language Support

The app is available in 4 languages:

🇭🇺Hungarian (main language)

🇬🇧English

🇸🇰Slovak

🇷🇴Romanian

Technical Specifications

Platform

iOS 16+

Developer

NEXSTACK DEV Team (nexstack.hu)

Operator

ViaClean Kft. (2500 Esztergom, Lázár Vilmos utca 75.)

Partner

ViaClean Kft.

Technologies

SwiftUI, Vision Framework, Firebase, MapKit, CoreLocation

Why HalNapló PRO?

Feature	HalNapló PRO	Traditional diary
Automatic fish measurement	AI + card reference	Measuring tape
Species recognition	From photo, with AI	Manual search
Catch diary	Digital, synchronized	Paper-based
Fishing map	Own spots with GPS	None
Fish species database	Complete, searchable	Book
Catch assistant	Species-specific tips	None
Permit management	Digital, validity tracking	Paper
Cloud sync	Automatic	None
Multi-language	4 languages	One language

Download HalNapló PRO and take your fishing experience to the next level!

Developed by: NEXSTACK DEV Team | Operated by: ViaClean Kft.

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