Comparison

unitCalc vs Noise Meter

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

unitCalc

Features
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unitCalc 是一款適用於 iPhone 與 iPad 的計算機與台灣常用單位換算工具。 主要功能: • 四則運算、平方、立方、平方根、立方根及記憶功能 • 十萬至兆等大數快捷鍵 • 重量、長度、面積與貨幣換算 • 單位選項可橫向捲動,支援直向與橫向操作 • 匯率快取,可於離線時使用最後一次成功取得的資料 換算單位: • 重量:公克、公斤、台斤、台兩、英磅、盎司 • 長度:公尺、公分、台尺、台寸、英尺、英寸 • 面積:台坪、台畝、台分、台甲、平方公尺、公頃、平方英尺 • 貨幣:台幣、美元、日圓、歐元、英鎊、韓元、越南盾、港幣、人民幣 貨幣換算主要採用臺灣銀行對台幣現金賣出匯率;無現金匯率時使用即期賣出匯率。臺灣銀行服務無法使用時,App 會使用中央銀行官方資料計算參考匯率,並顯示來源與資料時間。 匯率資料僅供換算參考,不代表任何金融機構的實際交易報價;實際匯率應以交易時相關金融機構公告為準。unitCalc 為獨立開發工具,與臺灣銀行及中央銀行沒有隸屬、合作、代理或背書關係。

About

Noise Meter

Features
Read full description

Measure the noise around you in real time. Noise Meter uses your device microphone to detect sound levels and displays them as a clear dB reading with a color-coded arc gauge. [Real-Time Sound Level] - Live arc gauge updates instantly as noise changes - Color codes: green (quiet), yellow (moderate), orange (loud), red (very loud) - Peak MAX reading with one-tap reset [Noise Reference Guide Built In] - Quiet: under 40 dB — library, empty room at night - Moderate: 40–60 dB — office, normal conversation - Loud: 60–80 dB — city traffic, busy restaurant - Very Loud: over 80 dB — concert, heavy machinery [Simple & Clean] - No sign-in, no setup — just tap Start - Works instantly, no configuration needed - Supports 9 languages: English, Korean, Japanese, Chinese (Simplified & Traditional), Spanish, French, German, and Portuguese Note: This app provides approximate sound level readings using your device microphone. Results may vary by device model and environment. Not a calibrated professional instrument. Download Noise Meter and know how loud your world really is.

Screenshots

unitCalc2 screens
Noise Meter2 screens

Verdict

The call

unitCalc and Noise Meter are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
unitCalc versus Noise Meter: the parameters behind the verdict, then further details
ParameterunitCalcNoise Meter
PriceFreeFree
Update frequencyMonthly—
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size1 MB31 MB
Age rating4+4+
Developer培祐 黃pilyeong heo

In-app purchases

None

unitCalc

No in-app purchases

None

Noise Meter

No in-app purchases

Questions

Is unitCalc free?
unitCalc is free to download, with no in-app purchases.
Is Noise Meter free?
Noise Meter is free to download, with no in-app purchases.
Do unitCalc or Noise Meter have ads?
Neither unitCalc nor Noise Meter shows ads.

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