# Spermy vs Build Up!!

Spermy and Build Up!! both sit at 4.7 stars, but that hides the real split: 90% of Spermy's written reviews are positive against 34% of Build Up!!'s. Spermy also leads on ads (none vs shown) and iOS requirement (7.0 vs 14.0). Build Up!!'s advantage is ratings volume (16K vs 339). On price, rating, update cadence and in-app purchases there is nothing between them.

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

Spermy holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Build Up!! has 16K ratings behind it against 339, so its average is the more settled of the two. Written reviews point the same way: 90% of Spermy's written reviews are positive against 34% of Build Up!!'s.

Spermy ships an update every 2 weeks, Build Up!! fortnightly. The most recent releases landed on October 17, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Spermy | Build Up!! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (339 ratings)](https://appshunter.io/ios/app/spermy/id1124573991/reviews)** | [4.5 (16K ratings)](https://appshunter.io/ios/app/build-up/id1453032346/reviews) |
| Number of ratings | 339 | **16K** |
| Positive reviews | **90.2% of reviews** | 34.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 88 MB | 266 MB |
| Requires iOS | **7.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Rene Zuidhof](https://appshunter.io/developer/954165647) | [Voodoo](https://appshunter.io/developer/714804730) |

## What reviewers say

### Spermy

[App page](https://appshunter.io/ios/app/spermy/id1124573991)

Navigate a challenging obstacle course by tapping to steer your sperm cell forward. Avoid touching the walls to survive and aim for objectives to boost your score. Compete for a high score and unlock achievements.

**Highlights:** Tap to steer, Avoid wall collisions, Collect objectives for points, High scores and leaderboard, Unlock achievements, Previous attempts as company

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No ads | $0.99 | one-time |

**What reviewers like**

- 🚀 Nostalgic and educational
- 👍 Addictive and fun gameplay
- 💡 Unique and creative concept

**What reviewers complain about**

- 🐛 Occasional glitches and crashes
- 🔍 Difficult and challenging
- 🤔 Questionable content

**Reported bugs**

- Unresponsive controls
- Compatibility issues with older devices

**Requested features**

- Add difficulty levels
- Implement multiplayer mode
- Introduce new game modes


### Build Up!!

[App page](https://appshunter.io/ios/app/build-up/id1453032346)

Construct your tower as tall as possible by strategically placing building nodes. Collect more nodes as you ascend to reach crucial checkpoints and achieve new heights.

**Highlights:** Build structures high, Gather building nodes, Reach checkpoints, Ascend to new heights

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads. | $2.99 | one-time |

**What reviewers like**

- 👍 Simple and fun game
- 🚀 Runs well with no crashes
- 💰 Free to play

**What reviewers complain about**

- 💸 Excessive ads
- 🐛 Impossible or buggy levels
- 🔁 Repetitive gameplay

**Reported bugs**

- Rivet counter malfunction
- Levels regenerating incorrectly
- Tower physics issues

**Requested features**

- More level variety
- Ability to create custom maps
- Removal of perfect triangle requirement


## Frequently asked questions

### Is Spermy free?

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

### Is Build Up!! free?

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

### Which has better reviews, Spermy or Build Up!!?

Spermy is rated higher. Spermy averages 4.7 out of 5 from 339 ratings, while Build Up!! averages 4.5 from 16K ratings.

### Do Spermy or Build Up!! have ads?

Build Up!! shows ads; Spermy does not.

### Which is updated more often, Spermy or Build Up!!?

Spermy ships an update every 2 weeks, and Build Up!! fortnightly. Most recently, Spermy was updated on October 17, 2026 and Build Up!! on October 21, 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.*