# polestarS vs SpectrumAnalyzer

The clearest difference is in-app purchases: polestarS at none against SpectrumAnalyzer's 2. polestarS also leads on ads (none vs shown) and update cadence (every 3 weeks vs every 2 months). On price and device support there is nothing between them.

Both are free to download. SpectrumAnalyzer sells 2 in-app purchases, starting at $0.49 per month. polestarS asks for nothing beyond the download.

polestarS ships an update every 3 weeks, SpectrumAnalyzer every 2 months. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | polestarS | SpectrumAnalyzer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 10.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free | — |
| Size | 43 MB | 7 MB |
| Requires iOS | **17.0** | 26.5 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Nagayoshi Tokai](https://appshunter.io/developer/492528399) | [Eiji Chiba](https://appshunter.io/developer/1818574673) |

## What reviewers say

### polestarS

[App page](https://appshunter.io/ios/app/polestars/id583219967)

This app analyzes your birth date to reveal your innate destiny and inherent traits based on Sanmeigaku principles. It calculates various astrological elements to help you understand yourself and guide your life choices.

**Highlights:** Calculates innate destiny and inherent traits, Uses solar calendar for calculations, Analyzes astrological elements like Six-ty Year Cycle, Heavenly Stems, Heavenly Void, etc., Explains the difference between destiny and fate, Based on the philosophy of humans as natural beings

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

**In-app purchases:** none


### SpectrumAnalyzer

[App page](https://appshunter.io/ios/app/spectrumanalyzer/id6790409622)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Proプラン (月額) | $0.49 | per month |
| Proプラン (買い切り永久版) | $9.99 | one-time |


## Frequently asked questions

### Is polestarS free?

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

### Is SpectrumAnalyzer free?

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

### Do polestarS or SpectrumAnalyzer have ads?

SpectrumAnalyzer shows ads; polestarS does not.

### Which is updated more often, polestarS or SpectrumAnalyzer?

polestarS ships an update every 3 weeks, and SpectrumAnalyzer every 2 months. Most recently, polestarS was updated on November 6, 2026 and SpectrumAnalyzer on October 31, 2026.

---

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