Hamster vs Taco vs MENTAL STAR
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hamster vs Taco
Engage in a fun, space-themed game to master double-digit addition and subtraction. Defeat incoming invaders by solving math problems to power up your defenses and advance through levels.
- Double-digit addition practice
- Double-digit subtraction practice
- Space-themed gameplay
- Level-based progression
- Enemy invaders
- Power-up mechanics
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Get ready to practice double-digit addition and subtraction and have some fun! Is that an enemy spaceship? No! It's a taco! Have Hamster throw fireballs and laser beams at tacos, pizza, cookies, pickles, and other space invaders to move up levels in the game. The enemy invaders will come faster as you reach higher levels. Correctly answer double-digit addition and subtraction problems to restore your firepower or your jetpack! Appropriate for anyone wanting to practice double-digit addition and subtraction while having a bit of fun! * No ads
MENTAL STAR
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MENTAL STAR may change your mind and your memory. Select any title which attracts you, and the relevant words move in various patterns. When you want to switch your mindset, just watch the words go round and round. Or that you like to memorize a series of words... Or even that you cannot decide what to eat... You can also create your original words set to drive in motions. Number of Japanese titles and a few Chinese titles are preset.
Screenshots
Verdict
The clearest difference is update cadence: MENTAL STAR at every 2 days against Hamster vs Taco's every 6 days. On price, ads, 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. Hamster vs Taco sells 1 one-off in-app purchase and MENTAL STAR sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Hamster vs Taco ships an update every 6 days, MENTAL STAR every 2 days. Both last shipped on October 30, 2026.
| Parameter | Hamster vs Taco | MENTAL STAR |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 6 days | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.4 |
| Further details — not scored | ||
| Size | 6 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | LearnEd Apps LLC | Sasagawa Yoshihiro |
In-app purchases
Hamster vs Taco
- Full Access$3.99
MENTAL STAR
- FASTER and SLOWER$5.99
- NO ADS$9.99
- MORE WORDS in NEW and EDIT$19.99
Questions
Is Hamster vs Taco free?
Is MENTAL STAR free?
Do Hamster vs Taco or MENTAL STAR have ads?
Which is updated more often, Hamster vs Taco or MENTAL STAR?
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