# Production Time Study vs Sampling Calculator

The clearest difference is review sentiment: Production Time Study at 100% against Sampling Calculator's 50%. Production Time Study also leads on update cadence (every 2 months vs every 16 months) and ratings volume (115 vs 1). Sampling Calculator's advantage is rating (5.0 vs 4.6). On ads, in-app purchases, monetization model and chart position there is nothing between them.

Production Time Study costs $1.99 and Sampling Calculator $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sampling Calculator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Production Time Study has 115 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 100% of Production Time Study's written reviews are positive against 50% of Sampling Calculator's, so the app with the better star average is not the one people write more warmly about.

Production Time Study ships an update every 2 months, Sampling Calculator every 16 months. The most recent releases landed on September 8, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Production Time Study | Sampling Calculator |
| --- | --- | --- |
| Price | **$1.99** | $5.99 |
| Rating | [4.6 (115 ratings)](https://appshunter.io/ios/app/production-time-study/id1079985359/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sampling-calculator/id1304811062/reviews)** |
| Number of ratings | **115** | 1 |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 16 months |
| Monetization | Paid | Paid |
| Best chart rank | #183 | **#173** |
| Size | 1 MB | 3 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gustavo Sousa](https://appshunter.io/developer/1079985358) | [Juan Manuel Alfredo Sanchez](https://appshunter.io/developer/1304811061) |

## What reviewers say

### Production Time Study

[App page](https://appshunter.io/ios/app/production-time-study/id1079985359)

**Currently charting:** #183 Top Paid · Productivity (US App Store)

This app facilitates time studies for industrial activities, including cyclic and non-cyclic events. It offers a stopwatch function for precise measurements and detailed analysis of tasks, aiding in manual task analysis and machine cycle time verification.

**Highlights:** Record unstoppable cycle times, Easy time study editing, Include non-cyclic occurrences, Add comments for task elements, Email time study in HTML format, Save up to 6 time study records, Rate of performance calculation

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

**In-app purchases:** none


### Sampling Calculator

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

**Currently charting:** #173 Top Paid · Productivity (US App Store)

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


## Frequently asked questions

### Is Production Time Study free?

Production Time Study costs $1.99, with no in-app purchases.

### Is Sampling Calculator free?

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

### Which has better reviews, Production Time Study or Sampling Calculator?

Sampling Calculator is rated higher. Production Time Study averages 4.6 out of 5 from 115 ratings, while Sampling Calculator averages 5.0 from 1 ratings.

### Do Production Time Study or Sampling Calculator have ads?

Neither Production Time Study nor Sampling Calculator shows ads.

### Which is updated more often, Production Time Study or Sampling Calculator?

Production Time Study ships an update every 2 months, and Sampling Calculator every 16 months. Most recently, Production Time Study was updated on September 8, 2026 and Sampling Calculator on September 10, 2026.

### Which is more popular, Production Time Study or Sampling Calculator?

Production Time Study currently peaks at #183 in the App Store charts, and Sampling Calculator at #173. Chart position reflects recent download velocity rather than total install base.

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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.*