# Additel Link vs Hydro Calcs

The clearest difference is update cadence: Hydro Calcs at every 5 days against Additel Link's every 6 weeks. Additel Link's advantage is iOS requirement (15.6 vs 17.0). 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.

Additel Link ships an update every 6 weeks, Hydro Calcs every 5 days. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Additel Link | Hydro Calcs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/additel-link/id1384771634/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 146 MB | 2 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Additel Corp.](https://appshunter.io/developer/1384771633) | [Milbar](https://appshunter.io/developer/1579581418) |

## What reviewers say

### Additel Link

[App page](https://appshunter.io/ios/app/additel-link/id1384771634)

This utility software connects to smart instruments via Bluetooth or network for remote monitoring, control, and data download. It simplifies traditional calibration tests, making them more efficient and digital.

**Highlights:** Remote monitoring and control, Data download and logging, Bluetooth and network connectivity, Simplified calibration tests, Real-time data display, Device status and information

**Features:** Vision Pro support

**In-app purchases:** none


### Hydro Calcs

[App page](https://appshunter.io/ios/app/hydro-calcs/id6817881146)

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

**In-app purchases:** none


## Frequently asked questions

### Is Additel Link free?

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

### Is Hydro Calcs free?

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

### Do Additel Link or Hydro Calcs have ads?

Neither Additel Link nor Hydro Calcs shows ads.

### Which is updated more often, Additel Link or Hydro Calcs?

Additel Link ships an update every 6 weeks, and Hydro Calcs every 5 days. Most recently, Additel Link was updated on October 5, 2026 and Hydro Calcs 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.*