# Sheep Duck vs Vivemory

The clearest difference is ads: Vivemory at none against Sheep Duck's shown. Sheep Duck's advantage is iOS requirement (15.0 vs 26.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Sheep Duck sells 9 one-off in-app purchases and Vivemory sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sheep Duck ships an update every 9 days, Vivemory every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sheep Duck | Vivemory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (152 ratings)](https://appshunter.io/ios/app/sheep-duck/id6766743027/reviews)** | — |
| Number of ratings | **152** | — |
| Positive reviews | 73.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 438 MB | 12 MB |
| Requires iOS | **15.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SuperMagic](https://appshunter.io/developer/1612781684) | [Lionel Ng](https://appshunter.io/developer/1819297057) |

## What reviewers say

### Sheep Duck

[App page](https://appshunter.io/ios/app/sheep-duck/id6766743027)

Defend a peaceful pond from swarming sheep and fierce wolves in this casual strategy game. Upgrade weapons, recruit friends with unique skills, and build a thriving farm with battle rewards. Enjoy thrilling defense battles with a charming, strategic twist.

**Highlights:** Day and night enemy cycles, Variety of unique upgradable weapons, Recruit friends with unique skills, Build and grow your own farm, Casual yet strategic gameplay

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gem Bundle 600 | $1.99 | one-time |
| Starter Bundle | $1.99 | one-time |
| Rank 2 Gun Bundle 1 | $4.99 | one-time |
| Rank 3 Gun Bundle 1 | $4.99 | one-time |
| Rank 2 Gun Bundle 2 | $9.99 | one-time |
| Rank 3 Gun Bundle 2 | $9.99 | one-time |
| Vip Package | $9.99 | one-time |
| Gem Bundle 3300 | $9.99 | one-time |
| Gem Bundle 8500 | $24.99 | one-time |


### Vivemory

[App page](https://appshunter.io/ios/app/vivemory-tile-match/id6793399971)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Sheep Duck free?

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

### Is Vivemory free?

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

### Do Sheep Duck or Vivemory have ads?

Sheep Duck shows ads; Vivemory does not.

### Which is updated more often, Sheep Duck or Vivemory?

Sheep Duck ships an update every 9 days, and Vivemory every 2 weeks. Most recently, Sheep Duck was updated on November 5, 2026 and Vivemory on October 31, 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.*