# ZVPLAN vs Flue Gas Analysis

The clearest difference is update cadence: ZVPLAN at fortnightly against Flue Gas Analysis's every 2 months. Flue Gas Analysis's advantage is iOS requirement (12.2 vs 15). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ZVPLAN ships an update fortnightly, Flue Gas Analysis every 2 months. The most recent releases landed on September 20, 2026 and June 9, 2026 respectively.

## The numbers

| Metric | ZVPLAN | Flue Gas Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | — | Free |
| Size | 44 MB | 147 MB |
| Requires iOS | 15 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ConSoft](https://appshunter.io/developer/397747217) | [Woehler Technik GmbH](https://appshunter.io/developer/959456679) |

## What reviewers say

### ZVPLAN

[App page](https://appshunter.io/ios/app/zvplan/id1060104073)

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

**In-app purchases:** none


### Flue Gas Analysis

[App page](https://appshunter.io/ios/app/flue-gas-analysis/id1666473195)

View and export flue gas analysis data from Wöhler Analyzers on your mobile device. Configure graphical displays and save measurements in various formats like PDF, CSV, and XML.

**Highlights:** Graphical and numerical display of measured values, Configuration of graphical display, Save measured values as PDF, CSV, XML, JPG, Configuration of PDF file, Export data from Wöhler Analyzers

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ZVPLAN free?

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

### Is Flue Gas Analysis free?

Flue Gas Analysis is free to download, with no in-app purchases.

### Do ZVPLAN or Flue Gas Analysis have ads?

Neither ZVPLAN nor Flue Gas Analysis shows ads.

### Which is updated more often, ZVPLAN or Flue Gas Analysis?

ZVPLAN ships an update fortnightly, and Flue Gas Analysis every 2 months. Most recently, ZVPLAN was updated on September 20, 2026 and Flue Gas Analysis on June 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.*