# Slime Up！ vs Isseki

The clearest difference is review sentiment: Isseki at 100% against Slime Up！'s 36%. Isseki also leads on rating (5.0 vs 4.1) and ads (none vs shown). Slime Up！'s advantage is ratings volume (240 vs 1) and monetization model (ad-supported vs freemium). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Slime Up！ sells 10 one-off in-app purchases and Isseki sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Isseki holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: Slime Up！ has 240 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 36% of Slime Up！'s written reviews are positive against 100% of Isseki's.

Slime Up！ ships an update monthly, Isseki every 2 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Slime Up！ | Isseki |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (240 ratings)](https://appshunter.io/ios/app/slime-up/id6762334135/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/isseki/id6822463844/reviews)** |
| Number of ratings | **240** | 1 |
| Positive reviews | 35.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | **Ad-supported** | Freemium |
| Size | 219 MB | 7 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [ZPLAY (HK) TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1301067319) | [Pure Golf Tour Ltd](https://appshunter.io/developer/6775756541) |

## What reviewers say

### Slime Up！

[App page](https://appshunter.io/ios/app/slime-up/id6762334135)

Build intricate block structures that defy gravity to defend against enemy waves. Merge and upgrade your defenses to create a powerful fortress. Test your engineering and strategic skills in this unique puzzle-tower defense hybrid.

**Highlights:** Physics-based block building, Merge and upgrade hero blocks, Real-time enemy defense, Creative strategic building, Boss battles, Fortress repair and fortification

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1-Day Speed Boost | $0.99 | one-time |
| Starter Pack | $1.99 | one-time |
| Chapter Pack 5 | $1.99 | one-time |
| Ad Skip Ticket 1 | $2.99 | one-time |
| Remove Ads Pack | $4.99 | one-time |
| Ad Skip Ticket 2 | $7.99 | one-time |
| Premium Bundle | $9.99 | one-time |
| Golden Pass | $12.99 | one-time |
| Permanent Speed Boost | $14.99 | one-time |
| Ad Skip Ticket 3 | $19.99 | one-time |


### Isseki

[App page](https://appshunter.io/ios/app/isseki/id6822463844)

Test your reflexes and speed by hitting targets in a daily challenge. Achieve perfection to become a legend. Compete with others globally on the same daily sequence.

**Highlights:** Daily global challenge sequence, Test instinct, reaction, and speed, Unlimited training with one-off unlock, No ads or sign-up required, Game Center integration for leaderboards

**Features:** Family Sharing, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Rounds | $1.99 | one-time |


## Frequently asked questions

### Is Slime Up！ free?

Slime Up！ is free to download, with in-app purchases available.

### Is Isseki free?

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

### Which has better reviews, Slime Up！ or Isseki?

Isseki is rated higher. Slime Up！ averages 4.1 out of 5 from 240 ratings, while Isseki averages 5.0 from 1 ratings.

### Do Slime Up！ or Isseki have ads?

Slime Up！ shows ads; Isseki does not.

### Which is updated more often, Slime Up！ or Isseki?

Slime Up！ ships an update monthly, and Isseki every 2 days. Most recently, Slime Up！ was updated on November 5, 2026 and Isseki on November 6, 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.*