# I&C Tech Tools vs OT Toolbox

The clearest difference is iOS requirement: I&C Tech Tools at 15.1 against OT Toolbox's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. I&C Tech Tools sells 2 in-app purchases, starting at $4.99 per month and OT Toolbox sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

I&C Tech Tools ships an update every 4 days, OT Toolbox every 6 days. The most recent releases landed on October 3, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | I&C Tech Tools | OT Toolbox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/i-and-c-tech-tools/id6756155332/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 6 days |
| Monetization | Free with in-app purchases | — |
| Size | 43 MB | 9 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [LONNIE DALE RAWLS](https://appshunter.io/developer/1858762647) | [Dominik Gausmann](https://appshunter.io/developer/1870320985) |

## What reviewers say

### I&C Tech Tools

[App page](https://appshunter.io/ios/app/i-and-c-tech-tools/id6756155332)

This app offers essential calculation tools for instrumentation and control technicians and engineers. It provides free access to basic tools, with advanced calculators available through a one-time in-app purchase or subscription.

**Highlights:** Basic instrumentation calculations, Free access to selected tools, Advanced calculators via in-app purchase, Practical reference tools, Ongoing improvements and updates

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| I&C Tech Tools - Monthly Access | $4.99 | per month |
| I&C Tech Tools - Yearly | $49.99 | per year |


### OT Toolbox

[App page](https://appshunter.io/ios/app/ot-toolbox-plc-and-automation/id6815303257)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OT Toolbox Pro | $3.99 | one-time |


## Frequently asked questions

### Is I&C Tech Tools free?

I&C Tech Tools is free to download, with in-app purchases available.

### Is OT Toolbox free?

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

### Do I&C Tech Tools or OT Toolbox have ads?

Neither I&C Tech Tools nor OT Toolbox shows ads.

### Which is updated more often, I&C Tech Tools or OT Toolbox?

I&C Tech Tools ships an update every 4 days, and OT Toolbox every 6 days. Most recently, I&C Tech Tools was updated on October 3, 2026 and OT Toolbox on October 18, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*