SCRCalc vs ZCRE
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SCRCalc
Easily calculate your Surface Consumption Rate (SCR) for scuba diving without memorizing complex formulas. Input your data and get your SCR instantly, helping you track your consumption and potentially impress dive guides.
- Calculate SCR for scuba diving
- No need to memorize formulas
- Easy data input
- Track air consumption
- Impress dive guides
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スクーバダイビングの水面換算空気消費率（SCR）を計算するアプリです。 面倒な公式を覚えなくても、必要なデータを入力するだけでSCRが計算できます。 今まで、計算していなかった人もこれを使えば自分のSCRが簡単に把握できるようになります。 ガイドやインストラクターがログブックをチェックする際に、SCRが記入されていると、「できるダイバー」と評価されて「とっておきのポイント」に案内してもらえるかも・・・
ZCRE
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App to control the exits of the Zwift time trial. Very useful for WTRL races where the starts are delayed and it is important not to pedal, warm up ...
Screenshots
Verdict
The clearest difference is price: ZCRE at Free against SCRCalc's $0.99. ZCRE also leads on update cadence (daily vs every 9 months) and iOS requirement (11.0 vs 27.0). On 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
ZCRE is free to download; SCRCalc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
SCRCalc ships an update every 9 months, ZCRE daily. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.
| Parameter | SCRCalc | ZCRE |
|---|---|---|
| Price | $0.99 | Free — better |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 9 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 27.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Office Proteus | Antonio Fernandez Herruzo |
In-app purchases
SCRCalc
No in-app purchases
ZCRE
No in-app purchases
