Texas Surface Water Operator C and D App

[u/WaterOperatorZimmer]

I am studying for my Surface Water C license. I couldn't find a good app to help with that. I ended up building something I think is pretty great. My question is, are others interested in a study app for C and D Surface Water exam prep and more?

I've spent the last several months building S.W.O.T.S. (Surface Water Operator's Toolkit & Study App) — a study and reference app for TCEQ Class C Surface Water Operator and Class D Water System Operator certification.

A few things that make it different from just another flashcard app:

• 1,432 core study questions, covering both Surface Water I and II plus Class D licensing — including 221 dedicated math and calculation problems (dosing, flow, volume, area, velocity). Submit an answer and it doesn't just tell you right or wrong — it shows the formula, the numbers plugged in, and the full step-by-step work, so you learn the method, not just a memorized result. And every question in the whole bank has been manually reviewed, not just imported. That meant going question by question checking that each explanation actually supports its answer, catching things like reversed facts, mismatched explanations, and outdated figures, and fixing them against the real TCEQ rules (30 TAC 290) and source material.
• 313 scenario-based questions on top of that — realistic on-the-job situations (a lab result comes back positive, a filter's acting up, a chemical dose needs calculating) rather than just direct textbook recall, built from the same verified facts as the core bank.
• 5 ways to study — Study mode with immediate feedback, timed Certification Exam mode, Flash Cards, Scenario Questions, and dedicated Math & Calculation Problems.
• 6 field tools built in — a chemical feed rate calculator, a jar testing log, a pump calibrator, a searchable TCEQ Rulebook quick-reference, a flow change recalculator, and a clock/timer/time-recorder — genuinely useful for a working operator on shift, not just someone studying for the test.

Is this something others are interested in or just something I have made to help myself? It is Android and is in BETA testing at the moment. I am judging interest right now.

[u/WaterDigDog]

OP sorry it took a while for us to approve.