Dyna vs Open Channel Flow Lite
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dyna
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.
- 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
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Dyna-Drill offers a broad range of motor power sections, rotors, and stators that are designed and manufactured to withstand the most demanding drilling applications. The Dyna-Drill Power Sections app enables you to browse and search power section spec sheets to identify the best solution for your specific needs. You can search by tool size, number of lobes, stages, and revolutions per gallon to ensure you have the right technology for your application. The app also enables you to save your most commonly used spec sheets under the “Favorites" tab for easy access. In addition, by using the “Contact” button, you will be able to connect with a Dyna-Drill expert in your region.
Open Channel Flow Lite
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Open Channel Flow Lite is the free edition of Open Channel Flow Pro. It has every feature of the Pro version, for small channels. CHANNEL SHAPES • Rectangular • Trapezoidal • Circular • Natural (irregular cross-section, with overbank roughness) • Triangular • Parabolic SOLVE FOR • Discharge, water depth, bed slope, and the channel width or pipe diameter, using Manning's equation RESULTS • Flow area, wetted perimeter, hydraulic radius, velocity, Froude number and flow regime • Critical depth, specific energy, alternate and sequent depths • Discharge rating curve and specific energy charts MORE TOOLS • Water surface profiles by the direct step method, from a control depth • Efficient Section: size the best section for a design discharge • Manning's n picker • Metric and English units • Worksheets to save and reopen your calculations • PDF reports to share • Built-in documentation and usage manual • iPhone and iPad LIMITS OF THE LITE VERSION • Discharge up to 0.5 m³/s (17.65 ft³/s) • Water depth in a circular channel up to 0.6 m (1.96 ft) • Trapezoidal side slope of 1:1 only Open Channel Flow Pro removes these limits. No account and no ads. Your worksheets stay on your device.
Screenshots
Verdict
The clearest difference is iOS requirement: Dyna at 8.0 against Open Channel Flow Lite's 15.0. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Dyna ships an update every 19 months, Open Channel Flow Lite every 13 months. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.
| Parameter | Dyna | Open Channel Flow Lite |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 19 months | Every 13 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Schlumberger Technology Corporation | Alexius Academia |
In-app purchases
Dyna
No in-app purchases
Open Channel Flow Lite
No in-app purchases
Questions
Is Dyna free?
Is Open Channel Flow Lite free?
Do Dyna or Open Channel Flow Lite have ads?
Which is updated more often, Dyna or Open Channel Flow Lite?
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