# SmartGrade Secure vs i4LINX

The clearest difference is update cadence: i4LINX at every 3 weeks against SmartGrade Secure's every 2 months. SmartGrade Secure's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SmartGrade Secure ships an update every 2 months, i4LINX every 3 weeks. The most recent releases landed on September 10, 2026 and May 26, 2026 respectively.

## The numbers

| Metric | SmartGrade Secure | i4LINX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (3 ratings)](https://appshunter.io/ios/app/smartgrade-secure/id1462392632/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 17 MB | 37 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [IoTech Verticals](https://appshunter.io/developer/1462392631) | [ALBERSON JOHAN SANCHEZ GARAVITO](https://appshunter.io/developer/1784733078) |

## What reviewers say

### SmartGrade Secure

[App page](https://appshunter.io/ios/app/smartgrade-secure/id1462392632)

Control all your smart home devices remotely with this secure application. Monitor usage, set timers, and optimize energy consumption for your home or business. Manage lighting, appliances, and even your main electrical panel with ease.

**Highlights:** Remote device control, Usage monitoring, Customizable timers, Precise energy consumption feedback, Control over various electrical units, Centralized home management

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

**In-app purchases:** none


### i4LINX

[App page](https://appshunter.io/ios/app/i4linx/id6739303241)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SmartGrade Secure free?

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

### Is i4LINX free?

i4LINX is free to download, with no in-app purchases.

### Do SmartGrade Secure or i4LINX have ads?

Neither SmartGrade Secure nor i4LINX shows ads.

### Which is updated more often, SmartGrade Secure or i4LINX?

SmartGrade Secure ships an update every 2 months, and i4LINX every 3 weeks. Most recently, SmartGrade Secure was updated on September 10, 2026 and i4LINX on May 26, 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.*