# Smart Battery Connection vs SprayMaster

The clearest difference is in-app purchases: Smart Battery Connection at none against SprayMaster's 3. Smart Battery Connection also leads on ads (none vs shown) and iOS requirement (11.0 vs 17.0). SprayMaster's advantage is update cadence (every 2 weeks vs every 4 months). On price and device support there is nothing between them.

Both are free to download. SprayMaster sells 3 in-app purchases, starting at $4.99 per 7 days. Smart Battery Connection asks for nothing beyond the download.

Smart Battery Connection ships an update every 4 months, SprayMaster every 2 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Smart Battery Connection | SprayMaster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 2 weeks** |
| Size | 28 MB | 3 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [应刚 郑](https://appshunter.io/developer/1446858821) | [Grima Hdez](https://appshunter.io/developer/1741481582) |

## What reviewers say

### Smart Battery Connection

[App page](https://appshunter.io/ios/app/smart-battery-connection/id1594552262)

**Features:** macOS Compatibility

**In-app purchases:** none


### SprayMaster

[App page](https://appshunter.io/ios/app/spraymaster-spray-calculator/id6789945138)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $4.99 | per 7 days |
| Pro Yearly | $29.99 | per year |
| SprayMaster Pro | $39.99 | one-time |


## Frequently asked questions

### Is Smart Battery Connection free?

Smart Battery Connection is free to download, with no in-app purchases.

### Is SprayMaster free?

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

### Do Smart Battery Connection or SprayMaster have ads?

SprayMaster shows ads; Smart Battery Connection does not.

### Which is updated more often, Smart Battery Connection or SprayMaster?

Smart Battery Connection ships an update every 4 months, and SprayMaster every 2 weeks. Most recently, Smart Battery Connection was updated on November 3, 2026 and SprayMaster on October 31, 2026.

---

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