AudioAnalyzerHT vs Silent Scan
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AudioAnalyzerHT
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iPhoneのマイクや音声入力機器より集音した音声をリアルタイムで波形・周波数スペクトラムグラフ・周波数スペクトラムタイムライン表示します 主な機能 • iPhoneマイクや他の音声入力された音声をリアルタイムで波形表示 • 周波数毎に音量をグラフ表示する周波数スペクトラム表示 • 周波数毎に音量を色で表現し、時間軸をスクロールさせる周波数スペクトラムタイムライン表示 14日間のトライアル期間は全機能を試すことが出来ます 14日以降は測定30秒毎にプレミアムプランの案内が表示されます プレミアムプランを購入頂くと案内は表示されなくなります
Silent Scan
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Silent Scanは、0〜50Hzの低周波域に特化した振動測定・記録アプリです。 スマートフォン内蔵の加速度センサーを使用し、床や構造物を通じた低周波振動をリアルタイムで検出・可視化します。 【主な機能】 ・0〜50Hzのリアルタイム低周波振動測定 ・低周波域の周波数スペクトル表示 ・測定履歴の保存と管理 ・GPS位置情報と連携した測定記録(Premium) 低周波振動は人が感じにくいにもかかわらず、体調不良や睡眠障害の原因となることがあります。Silent Scanは日常では気づきにくい低周波域の振動を可視化し、生活環境の状況把握にお役立てください。 静かな場所探しや、振動環境の確認にご活用ください。 【利用規約】 https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Silent Scan is a vibration measurement and recording app specialized for the low-frequency range of 0–50 Hz. Using your smartphone's built-in accelerometer, it detects and visualizes low-frequency vibrations transmitted through floors and structures in real time. [Key Features] • Real-time low-frequency vibration measurement (0–50 Hz) • Frequency spectrum display for the low-frequency range • Save and manage measurement history [Key Features] • Real-time low-frequency vibration measurement (0–50 Hz) • Frequency spectrum display for the low-frequency range • Save and manage measurement history • Measurement records linked with GPS location data (Premium) Although low-frequency vibrations are hard for people to perceive, they can sometimes cause physical discomfort or sleep problems. Silent Scan visualizes low-frequency vibrations that are difficult to notice in daily life, helping you understand the condition of your living environment. Use it to find quieter places or to check the vibration environment around you. [Terms of Use] https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: AudioAnalyzerHT at none against Silent Scan's shown. Silent Scan's advantage is update cadence (every 3 weeks vs every 11 months). On price, in-app purchases, device support and iOS requirement 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. AudioAnalyzerHT sells 1 one-off in-app purchase and Silent Scan sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
AudioAnalyzerHT ships an update every 11 months, Silent Scan every 3 weeks. The most recent releases landed on September 25, 2026 and September 14, 2026 respectively.
| Parameter | AudioAnalyzerHT | Silent Scan |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 11 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | HTLab | Yasuhiro Kodama |
In-app purchases
AudioAnalyzerHT
- PremiumPlan$0.99
Silent Scan
- Premium Plan$1.991 Month
Questions
Is AudioAnalyzerHT free?
Is Silent Scan free?
Do AudioAnalyzerHT or Silent Scan have ads?
Which is updated more often, AudioAnalyzerHT or Silent Scan?
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