# Sampling Calculator vs SIMATIC S7

The clearest difference is price: SIMATIC S7 at Free against Sampling Calculator's $5.99. SIMATIC S7 also leads on update cadence (every 4 months vs every 16 months) and ratings volume (5 vs 1). On rating, ads, in-app purchases and device support there is nothing between them.

SIMATIC S7 is free to download; Sampling Calculator costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Sampling Calculator against 5.0 for SIMATIC S7. That said, the two scores are not equally well evidenced: SIMATIC S7 has 5 ratings behind it against 1, so its average is the more settled of the two.

Sampling Calculator ships an update every 16 months, SIMATIC S7 every 4 months. The most recent releases landed on October 14, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Sampling Calculator | SIMATIC S7 |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/sampling-calculator/id1304811062/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/simatic-s7-1200-g2-nfc/id6739615964/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 4 months** |
| Monetization | Paid | **Free** |
| Size | 3 MB | 99 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Juan Manuel Alfredo Sanchez](https://appshunter.io/developer/1304811061) | [Siemens AG](https://appshunter.io/developer/394503271) |

## What reviewers say

### Sampling Calculator

[App page](https://appshunter.io/ios/app/sampling-calculator/id1304811062)

This tool helps calculate sampling plans based on ANSI/ASQ Z1.4 and MIL-STD-105E standards. It supports various sampling size code letters and AQLs for normal, tightened, and reduced inspections. It serves as an aid to understanding and applying these quality control standards.

**Highlights:** ANSI/ASQ Z1.4 2013 compliance, MIL-STD-105E compliance, Single sampling size code letters, Normal, Tightened, and Reduced inspection, AQLs from 0.065 to 15

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

**In-app purchases:** none


### SIMATIC S7

[App page](https://appshunter.io/ios/app/simatic-s7-1200-g2-nfc/id6739615964)

This app leverages NFC to provide quick access to your S7-1200 G2 system. It allows you to change operational modes, view device information, and read diagnostic data directly from your phone, acting as a portable HMI.

**Highlights:** NFC system access, Change CPU operational mode, View connected device details, Read diagnostic information, Monitor CPU scan times, Reset CPU memory, Write time to CPU

**In-app purchases:** none


## Frequently asked questions

### Is Sampling Calculator free?

Sampling Calculator costs $5.99, with no in-app purchases.

### Is SIMATIC S7 free?

SIMATIC S7 is free to download, with no in-app purchases.

### Which has better reviews, Sampling Calculator or SIMATIC S7?

Sampling Calculator and SIMATIC S7 are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do Sampling Calculator or SIMATIC S7 have ads?

Neither Sampling Calculator nor SIMATIC S7 shows ads.

### Which is updated more often, Sampling Calculator or SIMATIC S7?

Sampling Calculator ships an update every 16 months, and SIMATIC S7 every 4 months. Most recently, Sampling Calculator was updated on October 14, 2026 and SIMATIC S7 on October 21, 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.*