Comparison

MasterDex vs HackUDC OS

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MasterDex

This app serves as a comprehensive guide for fans and trainers, offering detailed information on creatures, team building, and the trading card game. It features offline access, advanced search, and tracking for favorite creatures and shinies, updated for the latest generation.

Highlights
  • Updated creature information
  • Team builder tool
  • Trading Card Game details
  • Offline functionality
  • Shiny creature tracker
  • Advanced search filters
Features
Read full description

Embark on an epic journey with MasterDex, the ultimate companion for all the fans and trainers. Key Features: ▶ Updated to Scarlet and Violet: Stay up-to-date with the latest generation of creatures, including their unique forms, evolutions, and abilities. ▶ Team Builder: Strategize and assemble your dream team using MasterDex's intuitive team-building feature. Plan your battles and unleash the power of synergy. ▶ TCG Info Included: Dive into the Trading Card Game world with comprehensive TCG information, including card details, prices, and rarity. ▶ No Login Required: Get instant access to a wealth of creature knowledge without the hassle of creating an account or remembering credentials. ▶ Works Offline: MasterDex is designed to be your reliable companion, even when you're offline. Access crucial information on the go, no matter where your adventures take you. ▶ Special Evolutions and Alternative Forms: Uncover the secrets of special evolutions and explore the diverse range of alternative forms within this captivating universe. ▶ Create a List of Your Favorite Creatures: Keep track of your most cherished companions. ▶ Keep Track of Your Shinies: Stay organized and track your shiny creatures with ease. MasterDex helps you monitor and celebrate your rare and unique discoveries. ▶ Detailed Information: Access to comprehensive details on creatures, moves, abilities, natures, items locations, and types. ▶ Advanced Search Filters: Find the creatures you're looking for effortlessly using advanced search filters. Narrow down your search based on various criteria. Embark on an extraordinary journey with MasterDex, your go-to companion. Please note that MasterDex is an unofficial, fan-made, and free-to-use app. It is not affiliated with or endorsed by the creators of the captivating world. Start your adventure today and become a true master!"

About

HackUDC OS

Features
Read full description

hackOS is the official app for the HackUDC hackathon. It serves both participants and event staff through a single adaptive interface. For Participants: - View the event schedule with day-by-day timeline, and configure per-session reminders - Track your team's judging queue position, ETA, and room assignment in real time - Access your entrance ticket and badge QR codes, and add them to Apple Wallet - Receive push notifications for queue calls, schedule changes, and announcements - Manage your account and notification preferences For Staff/Operators: - Scan QR codes for event accreditation (check-in), badge assignment, and badge replacement - Track attendee presence with door in/out scanning - Scan meals and recordable activities with first-serving/repeat detection - Manage judging queues: call teams, and review and configure presentation teams - View a searchable roster of all attendees with real-time status

Screenshots

MasterDex4 screens
HackUDC OS4 screens

Verdict

The call

The clearest difference is in-app purchases: HackUDC OS at none against MasterDex's 2. HackUDC OS also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. MasterDex sells 2 one-off in-app purchases. HackUDC OS asks for nothing beyond the download.

UpkeepUpdate frequency

MasterDex ships an update every 3 weeks, HackUDC OS every 2 weeks. The most recent releases landed on October 11, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
MasterDex versus HackUDC OS: the parameters behind the verdict, then further details
ParameterMasterDexHackUDC OS
PriceFreeFree
Rating4.8 (1.7K ratings) — better—
Positive reviews86.8% of reviews—
Number of ratings1.7K — better—
Update frequencyEvery 3 weeksEvery 2 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.616.4 — better
Further details — not scored
Size196 MB48 MB
Age rating4+4+
DeveloperLorenzo GrecoGPUL

Bugs and requests

MasterDex

Reported bugs

5 issues
  • Shiny toggle not working in team builder
  • Pokémon 3D models and artwork not displaying
  • Johto region locations missing
  • Crashes when adding Pokémon to teams
  • Incorrect information for some Pokémon (e.g., Necrozma's ability, Pikachu's classification)

Requested features

9 requests
  • Add Pokémon location filters
  • Implement ability to mark Pokémon as caught/seen
  • Add damage calculator
  • Allow reorganizing of teams
  • Include Pokémon cries and Dynamax/Gigantamax forms
Show 4 more
  • Add Pokémon trainer and villain information
  • Provide option to change default sprite view
  • Implement Tera Type information
  • Add item location and TM/HM information

HackUDC OS

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

MasterDex

One-time2
  • Masteredex - Sale$1.99
  • Masterdex PRO$2.99
None

HackUDC OS

No in-app purchases

Questions

Is MasterDex free?
MasterDex is free to download, with in-app purchases available.
Is HackUDC OS free?
HackUDC OS is free to download, with no in-app purchases.
Do MasterDex or HackUDC OS have ads?
MasterDex shows ads; HackUDC OS does not.
Which is updated more often, MasterDex or HackUDC OS?
MasterDex ships an update every 3 weeks, and HackUDC OS every 2 weeks. Most recently, MasterDex was updated on October 11, 2026 and HackUDC OS on October 3, 2026.

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