# OPEN.ioting vs Protractor°

The clearest difference is update cadence: Protractor° at every 2 days against OPEN.ioting's every 5 months. OPEN.ioting's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. OPEN.ioting sells 5 one-off in-app purchases and Protractor° sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

OPEN.ioting ships an update every 5 months, Protractor° every 2 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OPEN.ioting | Protractor° |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protractor-angle-finder/id6822147049/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 99 MB | 13 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [T.E.L.L. Software Hungária Kft.](https://appshunter.io/developer/584757958) | [Just2us Pte Ltd](https://appshunter.io/developer/293971188) |

## What reviewers say

### OPEN.ioting

[App page](https://appshunter.io/ios/app/openioting/id1608360113)

Control your smart home gate opener remotely. This application connects to a specific smart device over the internet, allowing you to manage electric gates and barriers from your phone. Requires data traffic for operation.

**Highlights:** Remote gate and barrier control, Internet connectivity, Smart home device management, WiFi and ETH connections

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Warranty extension | $8.99 | one-time |
| Warranty extension | $12.99 | one-time |
| User limit extension | $22.99 | one-time |
| User limit extension | $44.99 | one-time |
| User limit extension | $69.99 | one-time |


### Protractor°

[App page](https://appshunter.io/ios/app/protractor-angle-finder/id6822147049)

This app transforms your iPhone Duo into a digital protractor. Measure angles on paper or between surfaces by simply folding the device to match the desired angle and reading the degrees. Save and organize your measurements for later use.

**Highlights:** Measure angles on paper, Measure angles between surfaces, Uses iPhone Duo's folding hinge, Record and save angle readings, Organize measurements by date

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protractor Lifetime Access | $3.99 | one-time |


## Frequently asked questions

### Is OPEN.ioting free?

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

### Is Protractor° free?

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

### Do OPEN.ioting or Protractor° have ads?

Neither OPEN.ioting nor Protractor° shows ads.

### Which is updated more often, OPEN.ioting or Protractor°?

OPEN.ioting ships an update every 5 months, and Protractor° every 2 days. Most recently, OPEN.ioting was updated on November 3, 2026 and Protractor° on October 31, 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.*