# EnvLogger Viewer vs PID Controller Simulation

The clearest difference is price: EnvLogger Viewer at Free against PID Controller Simulation's $3.99. EnvLogger Viewer also leads on update cadence (every 2 months vs every 3 months). PID Controller Simulation's advantage is review sentiment (33% vs 0%). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

EnvLogger Viewer is free to download; PID Controller Simulation costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EnvLogger Viewer ships an update every 2 months, PID Controller Simulation every 3 months. The most recent releases landed on October 5, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | EnvLogger Viewer | PID Controller Simulation |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/pid-controller-simulation/id6612009107/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | 0.0% of reviews | **33.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | **Free** | Paid |
| Size | 2 MB | 6 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Electricblue, CRL](https://appshunter.io/developer/1490568569) | [立娜 王](https://appshunter.io/developer/1761096632) |

## What reviewers say

### EnvLogger Viewer

[App page](https://appshunter.io/ios/app/envlogger-viewer/id1490568570)

Communicate with contactless temperature loggers using NFC. Configure missions, plot data, and save it as CSV files for easy import into analysis software. Share your data instantaneously.

**Highlights:** NFC communication with EnvLoggers, Configure missions, Plot mission data, Save data as CSV, Instantaneous data sharing, Human-readable CSV format

**Features:** macOS Compatibility

**In-app purchases:** none


### PID Controller Simulation

[App page](https://appshunter.io/ios/app/pid-controller-simulation/id6612009107)

Master PID control theory and practice with this comprehensive simulation platform. Learn fundamental concepts, tune parameters, and simulate real-world applications like temperature and motor speed control. Export PID parameters as production-ready code in multiple languages.

**Highlights:** Comprehensive tutorial system, Interactive scenario simulations, Performance analysis tools, Code generator for multiple languages, Real-time curve visualization, Advanced PID algorithm explanations

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

**In-app purchases:** none


## Frequently asked questions

### Is EnvLogger Viewer free?

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

### Is PID Controller Simulation free?

PID Controller Simulation costs $3.99, with no in-app purchases.

### Do EnvLogger Viewer or PID Controller Simulation have ads?

Neither EnvLogger Viewer nor PID Controller Simulation shows ads.

### Which is updated more often, EnvLogger Viewer or PID Controller Simulation?

EnvLogger Viewer ships an update every 2 months, and PID Controller Simulation every 3 months. Most recently, EnvLogger Viewer was updated on October 5, 2026 and PID Controller Simulation on October 9, 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.*