# COSMO PANIC vs Spanky's Zombie Slayer

The clearest difference is ads: COSMO PANIC at none against Spanky's Zombie Slayer's shown. COSMO PANIC also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (13.0 vs 15.0). Spanky's Zombie Slayer's advantage is rating (4.8 vs 4.4) and review sentiment (68% vs 47%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. COSMO PANIC sells 10 one-off in-app purchases and Spanky's Zombie Slayer sells 9 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Spanky's Zombie Slayer holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Spanky's Zombie Slayer has 873 ratings behind it against 74, so its average is the more settled of the two. Written reviews point the same way: 47% of COSMO PANIC's written reviews are positive against 68% of Spanky's Zombie Slayer's.

COSMO PANIC ships an update weekly, Spanky's Zombie Slayer every 3 weeks. The most recent releases landed on November 4, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | COSMO PANIC | Spanky's Zombie Slayer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (74 ratings)](https://appshunter.io/ios/app/cosmo-panic/id6742480050/reviews) | **[4.8 (873 ratings)](https://appshunter.io/ios/app/spankys-zombie-slayer/id6748673207/reviews)** |
| Number of ratings | 74 | **873** |
| Positive reviews | 47.2% of reviews | **68.2% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 261 MB | 322 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [FUNDOSHI PARADE K.K.](https://appshunter.io/developer/1031838317) | [Lightheart Entertainment](https://appshunter.io/developer/1483457499) |

## What reviewers say

### COSMO PANIC

[App page](https://appshunter.io/ios/app/cosmo-panic/id6742480050)

Pilot an ancient combat machine in this retro space shooter. Battle waves of over 1,000 aliens at once with roguelite elements and unlimited upgrades. Face epic boss battles and enjoy challenging, one-handed gameplay.

**Highlights:** Massive battles against 1,000+ aliens, Retro arcade-style graphics, One-handed controls, Unlimited upgrades and customization, Epic boss battles, Roguelite elements with changing weapon combinations, Challenging retro-style difficulty

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| デイリーパック | $0.99 | one-time |
| Normal 5 Bosses Defeated!! | $1.99 | one-time |
| Beginner Pack | $3.49 | one-time |
| Mega Daily Pack | $5.49 | one-time |
| ジェム500個 | $5.99 | one-time |
| Unit Weapon Upgrade Pack | $9.99 | one-time |
| 広告非表示パック | $11.49 | one-time |
| プレミアムパス(ノーマル) | $12.99 | one-time |
| Planet Upgrade Pack | $15.99 | one-time |
| 11x Mech Pack | $21.99 | one-time |


### Spanky's Zombie Slayer

[App page](https://appshunter.io/ios/app/spankys-zombie-slayer/id6748673207)

Engage in a zombie apocalypse where you don't just survive, you thrive. Unlock and combine unique abilities to become the ultimate slayer, facing hordes of undead with creative and destructive methods. Experience fast-paced, high-energy gameplay with endless ways to defeat enemies.

**Highlights:** Unlockable abilities, Fast-paced gameplay, Hordes of enemies, Creative combat mechanics, Zombie slaying action

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shop Offer | $1.99 | one-time |
| Shop offer | $2.99 | one-time |
| Shop offer | $4.99 | one-time |
| Season Pass | $9.99 | one-time |
| Trust Fund 01 | $9.99 | one-time |
| Shop offer | $9.99 | one-time |
| Shop offer | $19.99 | one-time |
| Shop offer | $29.99 | one-time |
| Supreme Pass | $39.99 | one-time |


## Frequently asked questions

### Is COSMO PANIC free?

COSMO PANIC is free to download, with in-app purchases available.

### Is Spanky's Zombie Slayer free?

Spanky's Zombie Slayer is free to download, with in-app purchases available.

### Which has better reviews, COSMO PANIC or Spanky's Zombie Slayer?

Spanky's Zombie Slayer is rated higher. COSMO PANIC averages 4.4 out of 5 from 74 ratings, while Spanky's Zombie Slayer averages 4.8 from 873 ratings.

### Do COSMO PANIC or Spanky's Zombie Slayer have ads?

Spanky's Zombie Slayer shows ads; COSMO PANIC does not.

### Which is updated more often, COSMO PANIC or Spanky's Zombie Slayer?

COSMO PANIC ships an update weekly, and Spanky's Zombie Slayer every 3 weeks. Most recently, COSMO PANIC was updated on November 4, 2026 and Spanky's Zombie Slayer on November 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*