HalNapló ProNew App

HalNapló PRO

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?

1

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

2

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

3

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

4

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

5

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

6

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

7

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?

FeatureHalNapló PROTraditional diary
Automatic fish measurementAI + card referenceMeasuring tape
Species recognitionFrom photo, with AIManual search
Catch diaryDigital, synchronizedPaper-based
Fishing mapOwn spots with GPSNone
Fish species databaseComplete, searchableBook
Catch assistantSpecies-specific tipsNone
Permit managementDigital, validity trackingPaper
Cloud syncAutomaticNone
Multi-language4 languagesOne language

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

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