polestarS vs SpectrumAnalyzer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
polestarS
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.
- 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
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算命学アプリです。 高尾流に準拠しています。 ※立運は朱学流に準拠しています(高尾流の表示も有り)。 算命学は、「誕生日占い」の一種です。このアプリは、ふだん利用しているカレンダーでおなじみの「太陽暦」で命式を算出しますが、内部的には伝統的な旧暦を用いて計算しています。 シリーズ最高峰の本アプリでは、「あなたの宿命」を特定し、「あなたの持って生まれたもの」を明らかにします。 (計算について) 陰占/陽占(六十花甲子、蔵干、天中殺、十大主星、十二大従星、冲、刑、害、支合、半会、三合、方合、局、格、等)をプログラムで太陽暦に従い自動計算します。 プログラムされている命式が自動的に組み合わされて表示されます。 (算命学の結果の読み方について) 生まれながらの自分自身を「宿命」とし、そして自分の意志で決めた生き方を「運命」としています。さらに宿命に運命が重なって「運勢」を形成するのです。この宿命と運命の違いを研究することで、自分を自分らしいものにしていくことができるわけです。「算命学」とはこの研究をする学問のことなのです。 ここで計算しているのは、「宿命」です。これから未来に向かって選択する「運命」の参考にして下さい。また、選択した運命の結果である「運勢」類推にお役立て下さい。 (人間は自然物なり) 万象学の根底には「人間は自然物なり」と言う考えがあります。つまり、人間は大自然の産物であり、人間の人生は宇宙、自然の枠からは出られないものである。だから人間は自然の法則に影響されるのだと。 そして「自然の法則」が人間の意志ではどうにも出来ない部分「運勢」を決定しているのだと・・・。この自然の法則を人間の生年月日「宿命」を基に解明したのが算命学です。この有意義で誰もが納得できる学問をあなたも身に付けて見ようではありませんか。 鬼谷子曰く、「神とは自然の法則なり、自然に近づくことが神に近づくことなり」。
SpectrumAnalyzer
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[About the App] "SpectrumAnalyzer" is an advanced audio DSP visualizer that analyzes and visualizes live microphone input and audio files with high precision. Powered by Fast Fourier Transform (FFT) frequency analysis and a sleek, intuitive dark-themed user interface, anyone—from audio engineers and musicians to curious everyday users—can effortlessly observe and compare the "shape of sound." [Key Features] ■ Real-Time Visualization - Time Domain (Waveform): Displays sound amplitude fluctuations in real time as a waveform. - Frequency Domain (Spectrum): Analyzes and visualizes the frequency components contained in the sound. - Dual Display (Both): Shows the waveform and spectrum stacked vertically for a comprehensive view of sound behavior. ■ Pro-Grade DSP Parameters - Selectable FFT Size: Choose resolution from 512, 1024, 2048, or 4096 samples. - Window Functions: Supports None (Rectangular), Hann, Hamming, and Blackman windows. - Frequency Weighting: Switch between flat "Z-Weighting," human-hearing-matched "A-Weighting," and noise-evaluation "C-Weighting." ■ Snapshot Saving & Overlay Comparison - Instantly calculate the overall average spectrum from microphone measurements or recordings and save it as a named snapshot. - Overlay saved spectra onto the real-time analysis graph to easily compare frequency responses across different sound sources or before/after adjustments. - Freely customize graph line colors for each snapshot (supports preset colors and a custom color picker). - Preview and play back recorded audio right on the spot. ■ Audio File Import & Analysis - Import and analyze audio files (WAV / MP3 / AAC / M4A, etc.) from your device or iCloud Drive. - Save imported audio files as snapshots to overlay, compare, and audition alongside real-time microphone measurements. [Recommended Use Cases] - Audio Equipment & Speaker Tuning: Measure room acoustics and compare frequency balance before and after adjustments. - Musical Instrument Practice & Tuning: Visually check harmonic structures, verify pitch, and compare with reference tracks. - Vocal Training & Practice: Analyze the frequency characteristics of your own voice. - Environmental Sound & Noise Investigation: Identify which frequency bands ambient noise is coming from. [About Spectrum Analyzer Pro] Core real-time analysis, DSP parameter customization, audio file analysis, and comparison with up to 1 snapshot are all available for free. For users looking for even more advanced analysis, we offer the Pro Plan (Monthly Subscription / Lifetime Unlock). - Unlimited Overlay Comparisons: Remove the free plan limit (up to 1 snapshot) and overlay multiple measurement snapshots and audio files simultaneously without limits. - Ad-Free Experience: Remove all banner and interstitial ads for a clean, distraction-free acoustic analysis environment. * Subscriptions renew automatically unless canceled at least 24 hours before the end of the current billing period, and your Apple ID account will be charged. You can manage or cancel your subscription anytime in iOS "Settings" > "Apple ID" > "Subscriptions." [Links] Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: polestarS at none against SpectrumAnalyzer's 2. polestarS also leads on ads (none vs shown) and iOS requirement (17.0 vs 26.5). On price, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. SpectrumAnalyzer sells 2 in-app purchases, starting at $0.49 per month. polestarS asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 6, 2026 and November 10, 2026 respectively.
| Parameter | polestarS | SpectrumAnalyzer |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 10.5% of reviews | — |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 26.5 |
| Further details — not scored | ||
| Size | 43 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Nagayoshi Tokai | Eiji Chiba |
In-app purchases
polestarS
No in-app purchases
SpectrumAnalyzer
- Proプラン (月額)$0.491 Month
- Proプラン (買い切り永久版)$9.99









