# Architects Ruler vs SD Inclinometer

The clearest difference is ads: Architects Ruler at none against SD Inclinometer's shown. SD Inclinometer's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 26.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. Architects Ruler sells 1 one-off in-app purchase and SD Inclinometer sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Architects Ruler ships an update every 3 months, SD Inclinometer every 2 months. The most recent releases landed on October 17, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Architects Ruler | SD Inclinometer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 4 MB | 28 MB |
| Requires iOS | 26.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gijs Raggers](https://appshunter.io/developer/1438841415) | [SD Enerji](https://appshunter.io/developer/1896709634) |

## What reviewers say

### Architects Ruler

[App page](https://appshunter.io/ios/app/architects-ruler/id6755367822)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime scales menu | $0.99 | one-time |


### SD Inclinometer

[App page](https://appshunter.io/ios/app/sd-inclinometer/id6777238743)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is Architects Ruler free?

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

### Is SD Inclinometer free?

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

### Do Architects Ruler or SD Inclinometer have ads?

SD Inclinometer shows ads; Architects Ruler does not.

### Which is updated more often, Architects Ruler or SD Inclinometer?

Architects Ruler ships an update every 3 months, and SD Inclinometer every 2 months. Most recently, Architects Ruler was updated on October 17, 2026 and SD Inclinometer on October 8, 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.*