# TESK泵选型 vs HydroCalc Basic

The clearest difference is in-app purchases: TESK泵选型 at none against HydroCalc Basic's 1. TESK泵选型 also leads on update cadence (every 2 days vs every 11 days) and iOS requirement (9.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. HydroCalc Basic sells 1 one-off in-app purchase. TESK泵选型 asks for nothing beyond the download.

TESK泵选型 ships an update every 2 days, HydroCalc Basic every 11 days. The most recent releases landed on October 12, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | TESK泵选型 | HydroCalc Basic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 11 days |
| Size | 50 MB | 35 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [旭 汤](https://appshunter.io/developer/1034622624) | [Transparent Blue Water LLC](https://appshunter.io/developer/1847968351) |

## What reviewers say

### TESK泵选型

[App page](https://appshunter.io/ios/app/tesk/id1644041677)

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

**In-app purchases:** none


### HydroCalc Basic

[App page](https://appshunter.io/ios/app/hydrocalc-basic/id6752577110)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium - Flow Units & Ad-Free | $1.99 | one-time |


## Frequently asked questions

### Is TESK泵选型 free?

TESK泵选型 is free to download, with no in-app purchases.

### Is HydroCalc Basic free?

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

### Do TESK泵选型 or HydroCalc Basic have ads?

Neither TESK泵选型 nor HydroCalc Basic shows ads.

### Which is updated more often, TESK泵选型 or HydroCalc Basic?

TESK泵选型 ships an update every 2 days, and HydroCalc Basic every 11 days. Most recently, TESK泵选型 was updated on October 12, 2026 and HydroCalc Basic 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.*