鏡頭計算 Lens Calculator vs Stopwatch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
鏡頭計算 Lens Calculator
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「鏡頭計算」是一款可以進行鏡頭計算及焦距計算兩項功能的APP應用程式。鏡頭計算可以透過鏡頭大小的選取、距離及標的物長度設定，計算得焦距值、視野(Field of View, FOV)及標的區垂直高度。焦距計算則包含了水平焦距計算及垂直焦距計算，透過鏡頭大小的選取、距離及標的區長寬設定，可以計算焦距值。鏡頭大小可以選取七種，分別是：1/4、1/3、1/2.5、1/2、1/1.8、2/3及1英吋。測量單位包含四種，分別是：meter(公尺)、feet(英呎)、inch(英吋)及mm(公厘)。
Stopwatch
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A clean stopwatch with named laps — best split highlighted green, worst red — for runners, lifters and timers. - Giant readable digits across the gym - Tap to lap, name each split - Best lap green, worst red, auto - Lap export to CSV - Custom interval beeps and themes Who it's for For runners, swimmers and lifters timing sets, intervals and personal bests. Subscription Premium is available as a weekly, monthly or yearly auto-renewing subscription, or as a one-time Lifetime purchase. Subscriptions auto-renew unless you cancel at least 24 hours before the end of the period. You can cancel anytime in your Apple ID Subscription Settings. Payment is charged to your Apple ID. Privacy: everything stays on your device by default. No analytics SDKs, no cross-app tracking. Privacy policy at https://bestpaid.app/legal/privacy. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: 鏡頭計算 Lens Calculator at none against Stopwatch's 4. On price, update cadence, 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
Both are free to download. Stopwatch sells 4 in-app purchases, starting at $2.99 per 7 days. 鏡頭計算 Lens Calculator asks for nothing beyond the download.
鏡頭計算 Lens Calculator ships an update monthly, Stopwatch every 2 months. The most recent releases landed on October 16, 2026 and October 21, 2026 respectively.
| Parameter | 鏡頭計算 Lens Calculator | Stopwatch |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 5 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Lee Shi-Yeang | Vasilii Polovnikov |
In-app purchases
鏡頭計算 Lens Calculator
No in-app purchases
Stopwatch
- Premium · 1 week$2.997 Days
- Premium · 1 month$3.991 Month
- Premium · 1 year$5.991 Year
- Premium · Lifetime$7.99
Questions
Is 鏡頭計算 Lens Calculator free?
Is Stopwatch free?
Do 鏡頭計算 Lens Calculator or Stopwatch have ads?
Which is updated more often, 鏡頭計算 Lens Calculator or Stopwatch?
Other comparisons
