# SHIMGE PUMP Selection System vs Spectrum Analyzer

The clearest difference is in-app purchases: SHIMGE PUMP Selection System at none against Spectrum Analyzer's 1. SHIMGE PUMP Selection System also leads on iOS requirement (12.0 vs 17.6). Spectrum Analyzer's advantage is update cadence (daily vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Spectrum Analyzer sells 1 one-off in-app purchase. SHIMGE PUMP Selection System asks for nothing beyond the download.

SHIMGE PUMP Selection System ships an update every 3 weeks, Spectrum Analyzer daily. The most recent releases landed on October 3, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | SHIMGE PUMP Selection System | Spectrum Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Daily** |
| Size | 33 MB | 1 MB |
| Requires iOS | **12.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [旭 汤](https://appshunter.io/developer/1034622624) | [Josef Dave Llorente](https://appshunter.io/developer/6803405669) |

## 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


### Spectrum Analyzer

[App page](https://appshunter.io/ios/app/spectrum-analyzer-audio-fft/id6803405667)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spectrum Analyzer - Audio FFT | $1.99 | one-time |


## Frequently asked questions

### Is SHIMGE PUMP Selection System free?

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

### Is Spectrum Analyzer free?

Spectrum Analyzer is free to download, with in-app purchases available.

### Do SHIMGE PUMP Selection System or Spectrum Analyzer have ads?

Neither SHIMGE PUMP Selection System nor Spectrum Analyzer shows ads.

### Which is updated more often, SHIMGE PUMP Selection System or Spectrum Analyzer?

SHIMGE PUMP Selection System ships an update every 3 weeks, and Spectrum Analyzer daily. Most recently, SHIMGE PUMP Selection System was updated on October 3, 2026 and Spectrum Analyzer on October 15, 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.*