# Dyna vs CFM Inspector

The clearest difference is update cadence: CFM Inspector at every 9 days against Dyna's every 19 months. Dyna's advantage is iOS requirement (8.0 vs 16.4). 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.

Dyna ships an update every 19 months, CFM Inspector every 9 days. The most recent releases landed on October 6, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Dyna | CFM Inspector |
| --- | --- | --- |
| 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 19 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 26 MB | 119 MB |
| Requires iOS | **8.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Schlumberger Technology Corporation](https://appshunter.io/developer/380098290) | [ARIF DHARMAWAN](https://appshunter.io/developer/1507156315) |

## What reviewers say

### 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


### CFM Inspector

[App page](https://appshunter.io/ios/app/cfm-inspector/id1581697209)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Dyna free?

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

### Is CFM Inspector free?

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

### Do Dyna or CFM Inspector have ads?

Neither Dyna nor CFM Inspector shows ads.

### Which is updated more often, Dyna or CFM Inspector?

Dyna ships an update every 19 months, and CFM Inspector every 9 days. Most recently, Dyna was updated on October 6, 2026 and CFM Inspector on October 13, 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.*