# Production Time Study vs Sampling Calculator Lite

The clearest difference is review sentiment: Production Time Study at 100% against Sampling Calculator Lite's 33%. Production Time Study also leads on rating (4.6 vs 3.0) and update cadence (every 2 months vs every 14 months). Sampling Calculator Lite's advantage is price (Free vs $1.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Sampling Calculator Lite is free to download; Production Time Study costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Production Time Study holds the better App Store score, 4.6 against 3.0. That said, the two scores are not equally well evidenced: Production Time Study has 115 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Production Time Study's written reviews are positive against 33% of Sampling Calculator Lite's.

Production Time Study ships an update every 2 months, Sampling Calculator Lite every 14 months. The most recent releases landed on September 8, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | Production Time Study | Sampling Calculator Lite |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[4.6 (115 ratings)](https://appshunter.io/ios/app/production-time-study/id1079985359/reviews)** | [3.0 (3 ratings)](https://appshunter.io/ios/app/sampling-calculator-lite/id1312060456/reviews) |
| Number of ratings | **115** | 3 |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 14 months |
| Monetization | Paid | **Free** |
| Best chart rank | **#183** | — |
| Size | 1 MB | 1 MB |
| Requires iOS | **13.0** | 13.1 |
| 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 Lite

[App page](https://appshunter.io/ios/app/sampling-calculator-lite/id1312060456)

This tool helps calculate sampling plans based on ANSI/ASQ Z1.4 2013 and MIL-STD-105E standards. It assists in determining sampling size codes and inspection levels for quality control processes.

**Highlights:** ANSI/ASQ Z1.4 2013 compliance, MIL-STD-105E compliance, Single sampling size calculation, Normal and Reduced inspection, AQL range from 0.065 to 15, Supports size code letters I, II, and III

**Features:** macOS Compatibility

**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 Lite free?

Sampling Calculator Lite is free to download, with no in-app purchases.

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

Production Time Study is rated higher. Production Time Study averages 4.6 out of 5 from 115 ratings, while Sampling Calculator Lite averages 3.0 from 3 ratings.

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

Neither Production Time Study nor Sampling Calculator Lite shows ads.

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

Production Time Study ships an update every 2 months, and Sampling Calculator Lite every 14 months. Most recently, Production Time Study was updated on September 8, 2026 and Sampling Calculator Lite on August 19, 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.*