# Hi Pro vs Therblig

The clearest difference is review sentiment: Therblig at 100% against Hi Pro's 29%. Therblig also leads on rating (5.0 vs 2.5) and update cadence (weekly vs every 3 months). Hi Pro's advantage is in-app purchases (none vs 1) and ratings volume (22 vs 2). On price and ads there is nothing between them.

Both are free to download. Therblig sells 1 one-off in-app purchase. Hi Pro asks for nothing beyond the download.

Therblig holds the better App Store score, 5.0 against 2.5. That said, the two scores are not equally well evidenced: Hi Pro has 22 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 29% of Hi Pro's written reviews are positive against 100% of Therblig's.

Hi Pro ships an update every 3 months, Therblig weekly. The most recent releases landed on September 28, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Hi Pro | Therblig |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (22 ratings)](https://appshunter.io/ios/app/hi-pro/id1517556237/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/therblig-time-study/id6792123370/reviews)** |
| Number of ratings | **22** | 2 |
| Positive reviews | 29.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | **Free** | Freemium |
| Size | 110 MB | 2 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [秀玲 陈](https://appshunter.io/developer/1517556236) | [Marcelo Maldonado](https://appshunter.io/developer/6790241058) |

## What reviewers say

### Hi Pro

[App page](https://appshunter.io/ios/app/hi-pro/id1517556237)

Manage media and documents from your Apple USB Drive. View thumbnails for videos, photos, and music, and perform file operations like copy, cut, and delete. Supports various document formats and includes slideshow and music playback features.

**Highlights:** Media thumbnail display (video, photo, music), List/thumbnail view with sharing, File operations: copy, cut, delete, create, rename, Local/iStorage data transmission, Photo slideshow mode, Music artwork and playback controls, Document format support

**Features:** macOS Compatibility

**In-app purchases:** none


### Therblig

[App page](https://appshunter.io/ios/app/therblig-time-study/id6792123370)

This app is a time study instrument designed for industrial engineers to measure work elements, rate performance, and calculate standard times. It offers a unique cycle dial for real-time pace tracking and robust statistical analysis tools. Data can be exported for further analysis in spreadsheets.

**Highlights:** Continuous method timing, Cycle dial for pace tracking, Out-of-sequence work capture, Statistical analysis and outlier detection, Performance rating with leveling guide, PFD allowance application, CSV data export

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Therblig — Time Study | $39.99 | one-time |


## Frequently asked questions

### Is Hi Pro free?

Hi Pro is free to download, with no in-app purchases.

### Is Therblig free?

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

### Which has better reviews, Hi Pro or Therblig?

Therblig is rated higher. Hi Pro averages 2.5 out of 5 from 22 ratings, while Therblig averages 5.0 from 2 ratings.

### Do Hi Pro or Therblig have ads?

Neither Hi Pro nor Therblig shows ads.

### Which is updated more often, Hi Pro or Therblig?

Hi Pro ships an update every 3 months, and Therblig weekly. Most recently, Hi Pro was updated on September 28, 2026 and Therblig 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.*