# SHIMGE PUMP Selection System vs Invotech Compressors Selection

SHIMGE PUMP Selection System and Invotech Compressors Selection are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

SHIMGE PUMP Selection System ships an update every 3 weeks, Invotech Compressors Selection monthly. The most recent releases landed on September 16, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | SHIMGE PUMP Selection System | Invotech Compressors Selection |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 33 MB | 25 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [旭 汤](https://appshunter.io/developer/1034622624) | [Suzhou Invotech Scroll Technologies Co., Ltd.](https://appshunter.io/developer/1798866572) |

## What reviewers say

### SHIMGE PUMP Selection System

[App page](https://appshunter.io/ios/app/shimge-pump-selection-system/id6736855209)

**Features:** macOS Compatibility

**In-app purchases:** none


### Invotech Compressors Selection

[App page](https://appshunter.io/ios/app/invotech-compressors-selection/id6742527478)

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

**In-app purchases:** none


## Frequently asked questions

### Is SHIMGE PUMP Selection System free?

SHIMGE PUMP Selection System is free to download, with no in-app purchases.

### Is Invotech Compressors Selection free?

Invotech Compressors Selection is free to download, with no in-app purchases.

### Do SHIMGE PUMP Selection System or Invotech Compressors Selection have ads?

Neither SHIMGE PUMP Selection System nor Invotech Compressors Selection shows ads.

### Which is updated more often, SHIMGE PUMP Selection System or Invotech Compressors Selection?

SHIMGE PUMP Selection System ships an update every 3 weeks, and Invotech Compressors Selection monthly. Most recently, SHIMGE PUMP Selection System was updated on September 16, 2026 and Invotech Compressors Selection on September 6, 2026.

---

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