Stair Calculator vs 优品卡
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stair Calculator
This app calculates essential parameters for stair construction, offering flexibility in input and providing multiple step set options. It supports various units and allows results to be easily copied.
- Calculate stair construction parameters
- Flexible input for Run or Total Run
- Determine largest and smallest step sets
- Support for various units
- Copy results to clipboard
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Stair Calculator helps you calculate and compare staircase dimensions. FEATURES • Calculate using Run, Total Run, or Stair Angle • Enter a specific number of Runs or explore all calculated options • Support Metric and Imperial units • View detailed measurements and stair diagrams • Export results as a PDF or image • Copy results to the clipboard IMPORTANT Results are generated based on user-provided values and general calculation models. The app is intended for reference and educational purposes only. Please verify all measurements, local building requirements, and safety standards before actual construction. SUBSCRIPTION This subscription package offers unlimited access to all app features throughout the subscription period. • Payment will be charged to your Apple Account at confirmation of purchase. • The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your Apple Account will be charged for renewal within 24 hours before the end of the current period, and the renewal cost will be identified. • Subscriptions may be managed and auto-renewal may be turned off in your Apple Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. PRIVACY POLICY https://13520178.github.io/StairCalc/policy.html TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ CONTACT If you have any questions or suggestions, please contact us. Email: phannhatd@gmail.com
优品卡
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優品卡是一款專為全球消費、海外訂閱付款打造的卡管理工具。 【線上開卡,即開即用】 完成身分驗證後即可線上申請優品卡,審核通過後虛擬卡立即可用,實體卡需等待寄送。 【多卡管理,分開管理】 可依消費用途開立多張卡片,每張卡獨立管理餘額,互不影響;不再使用的卡片可隨時凍結。 【額度可控,扣款透明】 可為卡片設定消費限額、凍結/解凍卡片;每一筆扣款都能在卡片流水中查看。 【賬戶充值與資金管理】 賬戶目前支援以數字資產方式充值,到賬後自動折算為美元餘額,用於卡片劃轉與消費。 充值記錄、劃轉到卡、資金流水集中呈現;金額可一鍵隱藏,保護隱私。 ・本 App 僅提供基礎的入賬功能,不提供數字資產的買賣、兌換或交易服務。 ・充值後未使用完的餘額,活躍用戶可申請開通「餘額轉出」功能,將未使用的餘額轉出至自己的數字資產地址。 ・App 內提供充值校驗等配套功能,用於確認款項是否到賬。 【安全保障】 卡片資訊加密儲存,重要操作需交易密碼確認;如遇異常,可隨時凍結卡片並聯繫客服。 【使用須知】 ・開卡須完成身分驗證及合規審核。 ・數字資產相關功能的可用性依所在地區法規而定,部分地區不提供。 ・部分平台設有自己的風控規則,建議首次使用先小額驗證。 ・如有疑問,可透過 App 內「幫助中心」或「聯繫客服」取得協助。
Screenshots
Verdict
The clearest difference is in-app purchases: 优品卡 at none against Stair Calculator's 2. 优品卡 also leads on update cadence (every 3 weeks vs every 3 months). On price, ads, 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. Stair Calculator sells 2 in-app purchases, starting at $9.99 per year. 优品卡 asks for nothing beyond the download.
Stair Calculator ships an update every 3 months, 优品卡 every 3 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Stair Calculator | 优品卡 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (740 ratings) — better | — |
| Positive reviews | 21.4% of reviews | — |
| Number of ratings | 740 — better | — |
| Update frequency | Every 3 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 1 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Phan Nhat Đang | YP GLOBAL TECHNOLOGY LIMITED |
Bugs and requests
Stair Calculator
Reported bugs
2 issues- Subscription numbers don't add up
- Doesn't provide promised features after purchase
Requested features
3 requests- Option to uninstall app
- Ability to calculate run based on rise and landing space
- Provide more detailed diagrams and visuals
优品卡
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Stair Calculator
- Annual Premium Package7 Days trial$9.991 Year
- Unlock all features$5.99
优品卡
No in-app purchases








