Deck Builder for Union Arena vs Tertia
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Deck Builder for Union Arena
This fan-made companion app helps you build, manage, and share decks for the Union Arena TCG. It features a comprehensive card database, TCGPlayer value integration, and the ability to buy cards directly within the app.
- Extensive card database
- Deck building and management
- Card scanning for collection
- Community deck sharing
- TCGPlayer value integration
- Offline collection access
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Note: This app is not affiliated with or endorsed by the official Union Arena game publishers or Bandai Card Games. It is a fan-made companion app designed to enhance your gaming experience. Deck Builder for Union Arena: Your Ultimate Union Arena TCG Companion and official partner of TCGPlayer! See the TCGPlayer value of any card, deck, or collection. Buy any card or deck, including net decks, right from the app. Dive into the world of Union Arena with the most comprehensive deck-building and card management app available! Key Features: • Browse and search through an extensive card database • Build and manage your decks with ease • Scan your physical cards to quickly add them to your collection • Share your decks and discover new strategies from the community • High-quality card images for an immersive experience • Offline access to your entire collection Whether you're a seasoned pro or just starting out, Union Arena Decks is your go-to tool for mastering the game. With our intuitive interface, you can effortlessly create, edit, and analyze your decks to gain the competitive edge. Exclusive Pro Features: • Ad-free experience • Advanced deck analysis tools • Priority support Stay ahead of the competition with real-time updates on new card releases and meta shifts. Our app syncs across devices, ensuring your collection is always up-to-date and accessible. Join thousands of Union Arena enthusiasts and take your game to the next level. Download Union Arena Decks now and unleash your strategic potential! Terms of Service: https://unionarenadecks.com/markdown-page?page=terms-of-service Privacy Policy: https://unionarenadecks.com/markdown-page?page=privacy-policy EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Tertia
A fast-paced card game where players identify sets of three cards based on matching or differing attributes. It offers various modes to train your eye, from instant feedback to timed challenges and daily puzzles.
- Pattern-matching card game
- Four distinct game modes
- Instant feedback in Practice mode
- Timed challenges with combo multipliers
- Daily puzzles for consistent play
- Streak building for daily engagement
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Find the trio. Train your eye. Build a streak. Tertia is a fast, focused pattern-matching card game for iPhone and iPad. Twelve cards on the table. Three cards form a valid trio when, for every attribute — shape, count, color, and fill — they're either all the same or all different. Easy to learn. Fiendish to play under a clock. — FOUR DISTINCT MODES — • Practice — Get instant feedback on every pick. Tertia tells you exactly why a trio works or doesn't, attribute by attribute. The fastest way to internalize the rules. • Normal — The pure experience. Take your time. Use a hint when you're stuck. • Time Attack — Five minutes. No hints. Every match buys you extra seconds and feeds your combo multiplier. Chain trios in five-second windows to climb to ×2, then ×3. • Daily Puzzle — The same deck for every player, every day. Solve at your own pace, share your result, build a streak. Miss a day and the streak resets. Show up tomorrow and it builds again.
Screenshots
Verdict
The clearest difference is rating: Tertia at 5.0 against Deck Builder for Union Arena's 4.3. Tertia also leads on review sentiment (100% vs 64%) and in-app purchases (none vs 2). Deck Builder for Union Arena's advantage is ratings volume (72 vs 3) and iOS requirement (15.1 vs 26.2). On price, update cadence and device support 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
Both are free to download. Deck Builder for Union Arena sells 2 in-app purchases, starting at $4.99 per month. Tertia asks for nothing beyond the download.
Tertia holds the better App Store score, 5.0 against 4.3. That said, the two scores are not equally well evidenced: Deck Builder for Union Arena has 72 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 64% of Deck Builder for Union Arena's written reviews are positive against 100% of Tertia's.
Both ship on a similar rhythm, roughly weekly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | Deck Builder for Union Arena | Tertia |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (72 ratings) | 5.0 (3 ratings) — better |
| Positive reviews | 63.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 72 — better | 3 |
| Update frequency | Weekly | Weekly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 26.2 |
| Further details — not scored | ||
| Size | 80 MB | 10 MB |
| Age rating | 9+ | 4+ |
| Developer | Nicholas Martin Geil | Mark Martin |
Customer experience
Deck Builder for Union Arena
Tertia
In-app purchases
Deck Builder for Union Arena
- Union Arena Pro$4.991 Month
- Remove All Ads$4.99
Tertia
No in-app purchases
Questions
Is Deck Builder for Union Arena free?
Is Tertia free?
Which has better reviews, Deck Builder for Union Arena or Tertia?
Do Deck Builder for Union Arena or Tertia have ads?
Which is updated more often, Deck Builder for Union Arena or Tertia?
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