# WellMonitor vs Dyna

The clearest difference is update cadence: WellMonitor at every 3 months against Dyna's every 19 months. Dyna's advantage is iOS requirement (8.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WellMonitor ships an update every 3 months, Dyna every 19 months. Both last shipped on October 6, 2026.

## The numbers

| Metric | WellMonitor | Dyna |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/dyna-drill-power-sections/id1312988826/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 19 months |
| Monetization | — | Free |
| Size | 34 MB | 26 MB |
| Requires iOS | 14.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NUMERICA LTDA](https://appshunter.io/developer/1075486283) | [Schlumberger Technology Corporation](https://appshunter.io/developer/380098290) |

## What reviewers say

### WellMonitor

[App page](https://appshunter.io/ios/app/wellmonitor/id1075486284)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dyna

[App page](https://appshunter.io/ios/app/dyna-drill-power-sections/id1312988826)

Explore and search detailed specifications for motor power sections, rotors, and stators. Find the ideal drilling solution by filtering based on tool size, lobes, stages, and revolutions per gallon. Save favorites and connect with experts.

**Highlights:** Browse power section spec sheets, Search by tool size, lobes, stages, and RPM, Identify optimal drilling solutions, Save commonly used spec sheets, Connect with regional experts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WellMonitor free?

WellMonitor is free to download, with no in-app purchases.

### Is Dyna free?

Dyna is free to download, with no in-app purchases.

### Do WellMonitor or Dyna have ads?

Neither WellMonitor nor Dyna shows ads.

### Which is updated more often, WellMonitor or Dyna?

WellMonitor ships an update every 3 months, and Dyna every 19 months. Most recently, WellMonitor was updated on October 6, 2026 and Dyna on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*