ECD Calculator vs CBT Auto
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ECD Calculator
This utility app assists drilling and mud engineers in calculating Equivalent Circulating Density (ECD) at any point during operations. It offers a streamlined process with just a few clicks.
- ECD calculation
- Drilling engineering
- Mud engineering
- Point-of-operation calculation
- Streamlined interface
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ECD calculator help drilling and mud engineers calculate the ECD at any point with a few click
CBT Auto
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Unlock the world's cars Credible • Borderless • Timely
Screenshots
Verdict
The clearest difference is in-app purchases: CBT Auto at none against ECD Calculator's 2. CBT Auto also leads on iOS requirement (13.0 vs 15.1). ECD Calculator's advantage is update cadence (every 5 days vs fortnightly). 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
Both are free to download. ECD Calculator sells 2 one-off in-app purchases. CBT Auto asks for nothing beyond the download.
ECD Calculator ships an update every 5 days, CBT Auto fortnightly. Both last shipped on October 30, 2026.
| Parameter | ECD Calculator | CBT Auto |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 5 days — better | Fortnightly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 45 MB | 39 MB |
| Age rating | 17+ | 4+ |
| Developer | Drillsoft LLC | 香港塞伯坦汽车科技有限公司 |
In-app purchases
ECD Calculator
- 50 credits$3.99
- 300 Credits$9.99
CBT Auto
No in-app purchases
