# PB Smart vs DrainMaster Plus

The clearest difference is in-app purchases: PB Smart at none against DrainMaster Plus's 5. PB Smart also leads on iOS requirement (13.0 vs 16.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. DrainMaster Plus sells 5 in-app purchases, 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. Both last shipped on October 30, 2026.

## 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 | 82 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| 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-ec-and-ph/id6752567739)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DrainMaster Cloud Monthly | $3.99 | per month |
| 50 Credits | $1.99 | one-time |
| 150 Coins | $3.99 | one-time |
| 400 Coins | $8.99 | one-time |
| 1000 Coins | $17.99 | one-time |


## 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 October 30, 2026 and DrainMaster Plus on October 30, 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.*