# PSFEI Smoke School Test vs Time Study Engineer

The clearest difference is update cadence: PSFEI Smoke School Test at every 8 months against Time Study Engineer's every 17 months. PSFEI Smoke School Test also leads on device support (3 vs 1) and iOS requirement (8.0 vs 15.0). On price, ads and in-app purchases there is nothing between them.

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

PSFEI Smoke School Test ships an update every 8 months, Time Study Engineer every 17 months. The most recent releases landed on September 15, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | PSFEI Smoke School Test | Time Study Engineer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/time-study-engineer/id6740770124/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 17 months |
| Monetization | — | Free |
| Size | 53 MB | 7 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [The Pennsylvania State University](https://appshunter.io/developer/391462114) | [Vijay Gurav](https://appshunter.io/developer/1791521119) |

## What reviewers say

### PSFEI Smoke School Test

[App page](https://appshunter.io/ios/app/psfei-smoke-school-test/id1569825325)

**In-app purchases:** none


### Time Study Engineer

[App page](https://appshunter.io/ios/app/time-study-engineer/id6740770124)

This application assists industrial engineers in production and manufacturing settings with straightforward time study analysis. It allows for the export of collected data via email.

**Highlights:** Time study analysis, Production floor assistance, Manufacturing environment support, Data export via email, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PSFEI Smoke School Test free?

PSFEI Smoke School Test is free to download, with no in-app purchases.

### Is Time Study Engineer free?

Time Study Engineer is free to download, with no in-app purchases.

### Do PSFEI Smoke School Test or Time Study Engineer have ads?

Neither PSFEI Smoke School Test nor Time Study Engineer shows ads.

### Which is updated more often, PSFEI Smoke School Test or Time Study Engineer?

PSFEI Smoke School Test ships an update every 8 months, and Time Study Engineer every 17 months. Most recently, PSFEI Smoke School Test was updated on September 15, 2026 and Time Study Engineer on September 17, 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.*