Dozen vs UFO Annihilator
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Dozen
A challenging memory card game where you compete against your iPhone to test and improve your memorization skills. Flip cards, match pairs, and score points before the device outmaneuvers you. Engage in fast-paced, addictive gameplay anytime, anywhere.
- Memory card game
- Compete against iPhone
- Memorize card locations
- Score pairing points
- Fast-paced gameplay
- Sharpen memory
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Dozen is a new kind of memory card game, one in which you play against the iPhone© to prove your memorizing abilities. Flip cards, memorize their locations, and score pairing points before the iPhone© beats you to it. Challenge your mind, sharpen your memory, and engage in fast-paced gameplay that is addictive, right from your pocket. Take Dozen with you wherever you go, pairing off cards as you race against your iPhone©. It’s a great way to travel, unwind after a long day, or simply take a break from the work or studying at hand.
UFO Annihilator
Blast through waves of alien spaceships in a timed challenge. Compete against your own high scores and climb the leaderboards to become the ultimate space invader. Experience intense galactic combat.
- Space-blasting frenzy
- Obliterate spaceships
- Timed challenges
- High score tracking
- Leaderboard competition
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Aliens are invading! Tap fast, think faster, and blast them out of the sky! UFO Annihilator is a fast-paced arcade shooter where every second counts. Take down waves of incoming UFOs, chain together explosive combos, and race the clock across four increasingly brutal levels before facing down a boss battle finale. HOW TO PLAY Tap UFOs to destroy them and rack up points Grab the blue clock for bonus time, but watch out for the red one! Drop a bomb to clear the skies around you Deploy an auto-firing turret to thin the swarm Freeze the action with an ice cube when things get too hectic ARMORED ENEMIES As your score climbs, tougher UFOs start showing up: tinted orange, red, and (rarely) purple. The brighter the color, the more hits it takes to bring it down. Keep tapping! FOUR LEVELS + A BOSS BATTLE Survive Level 1 through Level 4, each wave faster and more relentless than the last, then take on the Boss Battle. Chip its health bar down to zero to win. Chase your high score across every run Simple one-tap controls, endless replayability A quick in-game tutorial gets you playing in seconds UFO Annihilator is free to play and supported by ads between levels. Prefer an uninterrupted run? A one-time purchase removes ads completely. Ready to defend the skies? Download now and start annihilating.
Screenshots
Verdict
The clearest difference is monetization model: Dozen at free against UFO Annihilator's paid. Dozen also leads on ads (none vs shown) and ratings volume (21 vs 1). UFO Annihilator's advantage is update cadence (every 6 days vs every 5 months). On price, rating, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for Dozen against 5.0 for UFO Annihilator. That said, the two scores are not equally well evidenced: Dozen has 21 ratings behind it against 1, so its average is the more settled of the two.
Dozen ships an update every 5 months, UFO Annihilator every 6 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.
| Parameter | Dozen | UFO Annihilator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (21 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 96.6% of reviews | — |
| Number of ratings | 21 — better | 1 |
| Update frequency | Every 5 months | Every 6 days — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 29 MB | 34 MB |
| Age rating | 17+ | 9+ |
| Developer | Igor Fedorov | Linda Felgenhauer |
Customer experience
Dozen
UFO Annihilator
In-app purchases
Dozen
No in-app purchases
UFO Annihilator
No in-app purchases









