# Days Counter vs Spectrum Analyzer

The clearest difference is in-app purchases: Days Counter at none against Spectrum Analyzer's 1. Spectrum Analyzer's advantage is ads (none vs shown) and update cadence (daily vs weekly). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Spectrum Analyzer sells 1 one-off in-app purchase. Days Counter asks for nothing beyond the download.

Days Counter ships an update weekly, Spectrum Analyzer daily. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Days Counter | Spectrum Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Daily** |
| Size | 6 MB | 1 MB |
| Requires iOS | 17.6 | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [YU-CHUN CHEN](https://appshunter.io/developer/1872582996) | [Josef Dave Llorente](https://appshunter.io/developer/6803405669) |

## What reviewers say

### Days Counter

[App page](https://appshunter.io/ios/app/days-counter-event-tracker/id6760195105)

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

**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 Days Counter free?

Days Counter 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 Days Counter or Spectrum Analyzer have ads?

Days Counter shows ads; Spectrum Analyzer does not.

### Which is updated more often, Days Counter or Spectrum Analyzer?

Days Counter ships an update weekly, and Spectrum Analyzer daily. Most recently, Days Counter was updated on October 24, 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.*