Comparison

Engineering 單位流量換算 vs Unit Converter

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

Head to head
About

Engineering 單位流量換算

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Engineering 單位流量換算是專為工程師設計的專業單位換算與流量計算工具。 【核心功能】 單位換算 • 長度單位換算(公制 ↔ 英制) • 重量單位換算 • 壓力單位換算(Pa, kPa, bar, psi, atm, kg/cm²) • 溫度單位換算(°C, °F, K) • 面積單位換算(m², ft², 坪, 甲) • 空氣流量單位換算(CFM, CMS, CMH, L/s) • 水量單位換算(GPM, LPM, CMH) 流量計算 • 設備水量估計:支援多種管路材質、管徑、流速模式與壓差模式,並考慮 Hazen-Williams 粗糙係數 • 氣體風量估算:支援風管尺寸、材質、空氣密度、流速與壓差雙模式 • CDA / 氮氣 / CO2 管路流量計算:支援工業氣體、可壓縮流體計算、壅塞流判斷、標準流量與實際流量顯示 多語言支援 • 繁體中文 • English • 日本語 【適用對象】 - HVAC 工程師 - 機械工程師 - MEP 工程師 - 管路設計人員 - 設備選型人員 - 工程專業學生 【特色】 • 專業級計算公式 • 直覺的使用介面 • 免費使用,底部提供 Google AdMob 廣告 • 離線使用 • 即時計算結果 • 支援深色模式 立即下載,讓工程計算更輕鬆!

About

Unit Converter

Features
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ConvertMaster is a completely free, ad-free unit converter. Launch and go. No sign-up. No data collection. All 40 categories are permanently free. No paywalls. ALL FEATURES FREE FOREVER: • 40 categories — currency, length, weight, area, volume, temperature, speed, time, pressure, energy, power, data storage, cooking, angle, fuel, force, torque and more • 200+ currencies with live exchange rates, updated hourly • Currency picker with search — find any currency instantly • Multilingual currency names (CLDR standard) • Home page ranks categories by your usage frequency • Restores your last-used category on launch • Batch convert — enter multiple values, see all results instantly • CSV export for batch results • Metric and imperial side by side • Scientific notation for extreme values • Dark mode • 100% offline (except live currency rates) No account. No sign-up. No data collection. No internet required (except live rates). Most converters limit their currency list or lock categories behind paywalls. ConvertMaster gives you everything — 200+ currencies with search, 40 categories — all for free, forever. Voluntary support available in app — optional, never nagged. No data collected. No tracking. No sharing. Your numbers, on your device only.

Screenshots

Engineering 單位流量換算4 screens
Unit Converter4 screens

Verdict

The call

The clearest difference is in-app purchases: Engineering 單位流量換算 at none against Unit Converter's 2. Unit Converter's advantage is update cadence (every 10 days vs every 2 months) and iOS requirement (13.0 vs 17.6). On price, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Unit Converter sells 2 one-off in-app purchases. Engineering 單位流量換算 asks for nothing beyond the download.

UpkeepUpdate frequency

Engineering 單位流量換算 ships an update every 2 months, Unit Converter every 10 days. The most recent releases landed on October 5, 2026 and October 7, 2026 respectively.

Scorecard3 real differences · 3 level
Engineering 單位流量換算 versus Unit Converter: the parameters behind the verdict, then further details
ParameterEngineering 單位流量換算Unit Converter
PriceFreeFree
Update frequencyEvery 2 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.613.0 — better
Further details — not scored
Size4 MB25 MB
Age rating4+9+
DeveloperCHUNG-HSIEN YU磊 刘

In-app purchases

None

Engineering 單位流量換算

No in-app purchases

2 purchases

Unit Converter

One-time2
  • Unit Conversion Standard Version$2.99
  • Unit Conversion Pro Edition$5.99

Questions

Is Engineering 單位流量換算 free?
Engineering 單位流量換算 is free to download, with no in-app purchases.
Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Do Engineering 單位流量換算 or Unit Converter have ads?
Neither Engineering 單位流量換算 nor Unit Converter shows ads.
Which is updated more often, Engineering 單位流量換算 or Unit Converter?
Engineering 單位流量換算 ships an update every 2 months, and Unit Converter every 10 days. Most recently, Engineering 單位流量換算 was updated on October 5, 2026 and Unit Converter on October 7, 2026.

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