# PSNERGY vs Smart PDF Printer For iPhone

The clearest difference is in-app purchases: PSNERGY at none against Smart PDF Printer For iPhone's 3. PSNERGY also leads on device support (3 vs 1) and iOS requirement (13.0 vs 18.2). On price, update cadence and ads there is nothing between them.

Both are free to download. Smart PDF Printer For iPhone sells 3 in-app purchases, starting at $3.99 per 7 days. PSNERGY asks for nothing beyond the download.

PSNERGY ships an update monthly, Smart PDF Printer For iPhone every 2 months. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | PSNERGY | Smart PDF Printer For iPhone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/psnergy/id1636048059/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free | — |
| Size | 40 MB | 13 MB |
| Requires iOS | **13.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [PSNERGY, LLC](https://appshunter.io/developer/1625716185) | [Patrick van der Ploeg](https://appshunter.io/developer/1789764470) |

## What reviewers say

### PSNERGY

[App page](https://appshunter.io/ios/app/psnergy/id1636048059)

Monitor your furnace performance with real-time data and interactive graphs. This tool provides instant updates every second, allowing for informed tuning decisions. Track your combustion system's performance over the last minute, 5 minutes, or 30 minutes.

**Highlights:** Real-time furnace performance data, Interactive performance graphs, Second-by-second updates, Adjustable data view (1, 5, 30 minutes), User-friendly interface, Combustion system monitoring

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

**In-app purchases:** none


### Smart PDF Printer For iPhone

[App page](https://appshunter.io/ios/app/smart-pdf-printer-for-iphone/id6748898240)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Printer App & Scanner Weekly | $3.99 | per 7 days |
| Printer App & Scanner Annual | $29.99 | per year |
| Printer App & Scanner Discount | $49.99 | per year |


## Frequently asked questions

### Is PSNERGY free?

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

### Is Smart PDF Printer For iPhone free?

Smart PDF Printer For iPhone is free to download, with in-app purchases available.

### Do PSNERGY or Smart PDF Printer For iPhone have ads?

Neither PSNERGY nor Smart PDF Printer For iPhone shows ads.

### Which is updated more often, PSNERGY or Smart PDF Printer For iPhone?

PSNERGY ships an update monthly, and Smart PDF Printer For iPhone every 2 months. Most recently, PSNERGY was updated on October 15, 2026 and Smart PDF Printer For iPhone on October 13, 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.*