# Belt Length Calculator vs Smartgen Cloud Plus

The clearest difference is price: Smartgen Cloud Plus at Free against Belt Length Calculator's $1.99. Smartgen Cloud Plus also leads on update cadence (every 6 weeks vs every 56 months) and iOS requirement (13.0 vs 16.1). On ads, in-app purchases and device support there is nothing between them.

Smartgen Cloud Plus is free to download; Belt Length Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Belt Length Calculator ships an update every 56 months, Smartgen Cloud Plus every 6 weeks. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | Belt Length Calculator | Smartgen Cloud Plus |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 56 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 1 MB | 139 MB |
| Requires iOS | 16.1 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Imran Pinjara](https://appshunter.io/developer/1484488781) | [郑州众智科技股份有限公司](https://appshunter.io/developer/1574149317) |

## What reviewers say

### Belt Length Calculator

[App page](https://appshunter.io/ios/app/belt-length-calculator/id1490691852)

Calculate the necessary length for drive system belts with this utility. Supports both open and cross belt arrangements, requiring only pulley diameters and center length for accurate results.

**Highlights:** Calculate belt length, Open belt arrangement, Cross belt arrangement, Input pulley diameters, Input center length

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

**In-app purchases:** none


### Smartgen Cloud Plus

[App page](https://appshunter.io/ios/app/smartgen-cloud-plus/id1574149315)

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

**In-app purchases:** none


## Frequently asked questions

### Is Belt Length Calculator free?

Belt Length Calculator costs $1.99, with no in-app purchases.

### Is Smartgen Cloud Plus free?

Smartgen Cloud Plus is free to download, with no in-app purchases.

### Do Belt Length Calculator or Smartgen Cloud Plus have ads?

Neither Belt Length Calculator nor Smartgen Cloud Plus shows ads.

### Which is updated more often, Belt Length Calculator or Smartgen Cloud Plus?

Belt Length Calculator ships an update every 56 months, and Smartgen Cloud Plus every 6 weeks. Most recently, Belt Length Calculator was updated on November 3, 2026 and Smartgen Cloud Plus on November 11, 2026.

---

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