# Sinbad vs Boulder Base

The clearest difference is iOS requirement: Sinbad at 4.3 against Boulder Base's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Sinbad sells 10 one-off in-app purchases and Boulder Base sells 20 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 8, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Sinbad | Boulder Base |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (161 ratings)](https://appshunter.io/ios/app/sinbad/id538401093/reviews)** | — |
| Number of ratings | **161** | — |
| Positive reviews | 55.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 88 MB | 642 MB |
| Requires iOS | **4.3** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 9+ |
| Developer | [Rebellion Games](https://appshunter.io/developer/538401096) | [Lukas Havel](https://appshunter.io/developer/1449361003) |

## What reviewers say

### Sinbad

[App page](https://appshunter.io/ios/app/sinbad/id538401093)

Embark on a swashbuckling adventure across the seven seas as a ship captain. Explore exotic destinations, battle enemies with intuitive combat, and upgrade your ship to recover lost relics and protect the world from evil.

**Highlights:** Naval exploration, Island conquest, Enemy battles, Treasure hunting, Ship upgrades, Intuitive combat system

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purse of Gems | $0.99 | one-time |
| Purse of Coins | $0.99 | one-time |
| Coin Doubler | $1.99 | one-time |
| Pouch of Gems | $2.99 | one-time |
| Pouch of Coins | $2.99 | one-time |
| Bag of Coins | $3.99 | one-time |
| Bag of Gems | $6.99 | one-time |
| Box of Coins | $6.99 | one-time |
| Box of Gems | $13.99 | one-time |
| Chest of Coins | $13.99 | one-time |


### Boulder Base

[App page](https://appshunter.io/ios/app/boulder-base-sci-fi-story-td/id1449361004)

**Features:** macOS Compatibility

**In-app purchases (20)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Truck of Boulder Coins | $1.99 | one-time |
| Cup Of Hero Parts | $1.99 | one-time |
| Unlock Northfort base | $2.99 | one-time |
| Unlock Redwick base | $2.99 | one-time |
| Unlock Waypond base | $2.99 | one-time |
| Unlock Millstone base | $2.99 | one-time |
| Unlock Burned Town base | $2.99 | one-time |
| Unlock Desert Cliff base | $2.99 | one-time |
| Small Halloween pack | $2.99 | one-time |
| Small Builder pack | $2.99 | one-time |
| Small Christmas pack | $2.99 | one-time |
| Small army pack | $2.99 | one-time |
| Complex pack | $2.99 | one-time |
| Supply of Boulder Coins | $4.99 | one-time |
| Barrel Of Hero Parts | $4.99 | one-time |
| Big Christmas pack | $4.99 | one-time |
| Big Halloween pack | $4.99 | one-time |
| Big Builder pack | $4.99 | one-time |
| Big complex pack | $4.99 | one-time |
| Big army pack | $4.99 | one-time |


## Frequently asked questions

### Is Sinbad free?

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

### Is Boulder Base free?

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

### Do Sinbad or Boulder Base have ads?

Neither Sinbad nor Boulder Base shows ads.

### Which is updated more often, Sinbad or Boulder Base?

Sinbad ships an update every 2 months, and Boulder Base every 2 months. Most recently, Sinbad was updated on October 8, 2026 and Boulder Base on September 19, 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.*