# Trig Instruments Toolbox vs Gould Instruments

The clearest difference is update cadence: Gould Instruments at every 6 months against Trig Instruments Toolbox's every 27 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Trig Instruments Toolbox ships an update every 27 months, Gould Instruments every 6 months. The most recent releases landed on October 7, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Trig Instruments Toolbox | Gould Instruments |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.6 (5 ratings)](https://appshunter.io/ios/app/trig-instruments-toolbox/id1467103926/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 27 months | **Every 6 months** |
| Monetization | Free | — |
| Size | 54 MB | 66 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Stevens Marketing Limited](https://appshunter.io/developer/1467103925) | [Gould Instruments Pty Ltd](https://appshunter.io/developer/1613625674) |

## What reviewers say

### Trig Instruments Toolbox

[App page](https://appshunter.io/ios/app/trig-instruments-toolbox/id1467103926)

This utility app provides a collection of essential field tools, including a ratio to angle converter, inclinometer, tally counter, and protractor. It leverages your device's sensors for accurate estimations and calculations, reducing the need to carry multiple physical instruments.

**Highlights:** Ratio to Angle converter, Inclinometer, Tally counter, Protractor, Uses device sensors for accuracy, New free tools added regularly

**Features:** macOS Compatibility

**In-app purchases:** none


### Gould Instruments

[App page](https://appshunter.io/ios/app/gould-instruments/id1613625672)

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

**In-app purchases:** none


## Frequently asked questions

### Is Trig Instruments Toolbox free?

Trig Instruments Toolbox is free to download, with no in-app purchases.

### Is Gould Instruments free?

Gould Instruments is free to download, with no in-app purchases.

### Do Trig Instruments Toolbox or Gould Instruments have ads?

Neither Trig Instruments Toolbox nor Gould Instruments shows ads.

### Which is updated more often, Trig Instruments Toolbox or Gould Instruments?

Trig Instruments Toolbox ships an update every 27 months, and Gould Instruments every 6 months. Most recently, Trig Instruments Toolbox was updated on October 7, 2026 and Gould Instruments on September 23, 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.*