# Evongo vs StairPlan

The clearest difference is in-app purchases: Evongo at none against StairPlan's 4. Evongo also leads on iOS requirement (12.3 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. StairPlan sells 4 in-app purchases, starting at $1.99 per 7 days. Evongo asks for nothing beyond the download.

## The numbers

| Metric | Evongo | StairPlan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stairplan-stair-calculator/id6767059580/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 42 MB | 3 MB |
| Requires iOS | **12.3** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Nantang Technology (Shenzhen) Co., Ltd.](https://appshunter.io/developer/1752103082) | [ZHENGQIAO JIANG](https://appshunter.io/developer/1892168889) |

## What reviewers say

### Evongo

[App page](https://appshunter.io/ios/app/evongo/id6504404721)

**Features:** macOS Compatibility

**In-app purchases:** none


### StairPlan

[App page](https://appshunter.io/ios/app/stairplan-stair-calculator/id6767059580)

Calculate staircase dimensions and check them against building codes. Supports various stair types and offers AR measurement, 3D previews, and exportable diagrams. Save unlimited projects offline.

**Highlights:** Calculate stringer length, riser height, tread depth, and pitch, Supports straight, L-shaped, U-shaped, winder, spiral, and deck stairs, Real-time code compliance checks (US, Canada, UK, Australia), AR camera measurement and 3D previews, Exportable cut diagrams, cut lists, and CAD files, Save unlimited projects offline

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Monthly | $4.99 | per month |
| Yearly | $29.99 | per year |
| Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is Evongo free?

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

### Is StairPlan free?

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

### Do Evongo or StairPlan have ads?

Neither Evongo nor StairPlan shows ads.

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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.*