# PB Smart vs DrainMaster Plus

The clearest difference is in-app purchases: PB Smart at none against DrainMaster Plus's 1. PB Smart also leads on update cadence (weekly vs every 2 weeks) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. DrainMaster Plus sells 1 in-app purchase, starting at $3.99 per month. PB Smart asks for nothing beyond the download.

PB Smart ships an update weekly, DrainMaster Plus every 2 weeks. The most recent releases landed on September 17, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | PB Smart | DrainMaster Plus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Size | 48 MB | 67 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Shenzhen Pinbanke Technology Co., Ltd.](https://appshunter.io/developer/1777009363) | [kobosil.me Development](https://appshunter.io/developer/951054288) |

## What reviewers say

### PB Smart

[App page](https://appshunter.io/ios/app/pb-smart/id6749815667)

**Features:** macOS Compatibility

**In-app purchases:** none


### DrainMaster Plus

[App page](https://appshunter.io/ios/app/drainmaster-plus/id6752567739)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DrainMaster Cloud Monthly | $3.99 | per month |


## Frequently asked questions

### Is PB Smart free?

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

### Is DrainMaster Plus free?

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

### Do PB Smart or DrainMaster Plus have ads?

Neither PB Smart nor DrainMaster Plus shows ads.

### Which is updated more often, PB Smart or DrainMaster Plus?

PB Smart ships an update weekly, and DrainMaster Plus every 2 weeks. Most recently, PB Smart was updated on September 17, 2026 and DrainMaster Plus on September 23, 2026.

---

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