Steel Data vs ScreenPenguin
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Steel Data
This app offers a comprehensive reference for various steel types, sizes, and unit weights. It's designed to assist professionals in the construction industry with quick access to essential steel data.
- Extensive steel type catalog
- Detailed size information
- Unit weight calculations
- Construction industry focus
- General reference tool
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鐵書｜鋼材知識，一翻就懂。 鐵書將鋼材規格、重量計算與工程參考資料整理成易查、易讀、易分享的隨身工具。無論在工地、辦公室或課堂，都能快速找到所需資料。 鋼材規格，分類清楚 收錄逾 1,800 款規格，涵蓋工字鋼、角鋼、鋼通、鋼筋、鋼絲網及歐洲型鋼。支援香港常用名稱搜尋，方便按分類、代號或尺寸查閱。 重量計算，即時查看 選擇鋼材分類及規格，輸入長度或面積，即可估算重量。結果以公斤及公噸顯示，並加入千位分隔符，方便閱讀。 重點資料，一卡分享 將鋼材規格或重量估算製成精簡圖片卡，方便透過 WhatsApp 等應用程式分享。卡片保留資料來源及 App Store 下載 QR Code。 常用規格，隨手收藏 收藏經常使用的鋼材規格，減少重複搜尋。 以簡潔的日系卡通介面，讓工程資料更容易理解。
ScreenPenguin
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Organize photos, saved images, and screenshots with a swipe, then review your selections before deleting. Choose “All images” as the cleanup target to include photos and saved images the app can access. Photo access permission is required. Swipe left to mark an image for deletion, right to keep it, or up to decide later. Work through your collection at your own pace. SORT YOUR COLLECTION You can also choose to organize screenshots only. REVIEW BEFORE DELETING Check the deletion list and previews, and remove any image you want to keep before confirming. REVIEW SAVED IMAGES See images you swiped right on in the saved list. Removing an item from that list does not delete the original image from your device. TRACK YOUR PROGRESS See the number of images deleted, estimated storage savings, and cleanup history. Storage savings are estimates. CHOOSE YOUR LOOK Select light mode, dark mode, or follow your device settings. Start organizing your images with ScreenPenguin. Images are processed on your device. Advertising and analytics may use a network connection.
Screenshots
Verdict
The clearest difference is update cadence: ScreenPenguin at every 3 days against Steel Data's monthly. ScreenPenguin also leads on iOS requirement (15.0 vs 18.6). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Steel Data ships an update monthly, ScreenPenguin every 3 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | Steel Data | ScreenPenguin |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Monthly | Every 3 days — better |
| Ads | Yes | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 13 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | Huaping Ye | KAZUKI KUMAZAWA |
In-app purchases
Steel Data
No in-app purchases
ScreenPenguin
No in-app purchases
