# GARDCO Viscosity Calc vs HOBOconnect

The clearest difference is review sentiment: GARDCO Viscosity Calc at 100% against HOBOconnect's 8%. GARDCO Viscosity Calc also leads on rating (5.0 vs 2.2) and iOS requirement (13.4 vs 15.0). HOBOconnect's advantage is ratings volume (29 vs 6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

GARDCO Viscosity Calc holds the better App Store score, 5.0 against 2.2. Both are backed by a comparable volume of ratings — 6 and 29 respectively. Written reviews point the same way: 100% of GARDCO Viscosity Calc's written reviews are positive against 8% of HOBOconnect's.

GARDCO Viscosity Calc ships an update every 3 weeks, HOBOconnect every 6 weeks. The most recent releases landed on October 20, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | GARDCO Viscosity Calc | HOBOconnect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/gardco-viscosity-calc/id1488629531/reviews)** | [2.2 (29 ratings)](https://appshunter.io/ios/app/hoboconnect/id1517656696/reviews) |
| Number of ratings | 6 | **29** |
| Positive reviews | **100.0% of reviews** | 8.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | Free | Free |
| Size | 6 MB | 94 MB |
| Requires iOS | **13.4** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BYK Gardner](https://appshunter.io/developer/1488629530) | [Onset Computer Corporation](https://appshunter.io/developer/890594162) |

## What reviewers say

### GARDCO Viscosity Calc

[App page](https://appshunter.io/ios/app/gardco-viscosity-calc/id1488629531)

Calculate kinematic viscosity or drain time for various viscosity cups. Input a known value and cup type to find the unknown, with visual indicators for valid measurement ranges. Helps select the appropriate cup for accurate testing.

**Highlights:** Calculate kinematic viscosity, Calculate drain time, Support for Gardco and BYK cups, Input drain time or viscosity, Visual range indicators, Error messages for out-of-range values

**Features:** macOS Compatibility

**In-app purchases:** none


### HOBOconnect

[App page](https://appshunter.io/ios/app/hoboconnect/id1517656696)

Wirelessly configure, start, and download data from HOBO MX data loggers via Bluetooth. View, analyze, and export recorded data in various formats for further use in other applications.

**Highlights:** Wireless Bluetooth communication with HOBO MX loggers, Configure logger settings (name, password, rate, alarms), Monitor logger status (memory, battery), Download and view recorded data, Data analysis in graphical and list formats, Export data as CSV, TXT, XLSX, and HOBO files

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is GARDCO Viscosity Calc free?

GARDCO Viscosity Calc is free to download, with no in-app purchases.

### Is HOBOconnect free?

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

### Which has better reviews, GARDCO Viscosity Calc or HOBOconnect?

GARDCO Viscosity Calc is rated higher. GARDCO Viscosity Calc averages 5.0 out of 5 from 6 ratings, while HOBOconnect averages 2.2 from 29 ratings.

### Do GARDCO Viscosity Calc or HOBOconnect have ads?

Neither GARDCO Viscosity Calc nor HOBOconnect shows ads.

### Which is updated more often, GARDCO Viscosity Calc or HOBOconnect?

GARDCO Viscosity Calc ships an update every 3 weeks, and HOBOconnect every 6 weeks. Most recently, GARDCO Viscosity Calc was updated on October 20, 2026 and HOBOconnect on October 21, 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.*