# Octal vs Time Study Engineer

The clearest difference is in-app purchases: Time Study Engineer at none against Octal's 1. Time Study Engineer also leads on ads (none vs shown). Octal's advantage is update cadence (every 5 months vs every 17 months) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Octal sells 1 one-off in-app purchase. Time Study Engineer asks for nothing beyond the download.

Octal ships an update every 5 months, Time Study Engineer every 17 months. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Octal | 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 | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 5 months** | Every 17 months |
| Monetization | — | Free |
| Size | 139 MB | 7 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Amrit Duwal](https://appshunter.io/developer/1507795021) | [Vijay Gurav](https://appshunter.io/developer/1791521119) |

## What reviewers say

### Octal

[App page](https://appshunter.io/ios/app/octal/id1597563932)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |


### 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 Octal free?

Octal is free to download, with in-app purchases available.

### Is Time Study Engineer free?

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

### Do Octal or Time Study Engineer have ads?

Octal shows ads; Time Study Engineer does not.

### Which is updated more often, Octal or Time Study Engineer?

Octal ships an update every 5 months, and Time Study Engineer every 17 months. Most recently, Octal was updated on October 16, 2026 and Time Study Engineer on October 4, 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.*