Water Flow Calculators vs IFSTA Instructor 9
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Water Flow Calculators
This educational app provides calculations for water flow using friction loss, smooth nozzle, NFA, and Iowa formulas. It's designed for professionals and students needing quick and accurate fluid dynamics computations.
- Friction loss calculations
- Smooth nozzle calculations
- NFA formula support
- Iowa formula support
- Fluid dynamics computations
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Waterous Friction Loss / Smooth Nozzle / NFA and Iowa Formulas
IFSTA Instructor 9
This app provides instructor training for fire and emergency services professionals, aligning with NFPA 1041 standards. It includes free flashcards and access to the first chapter of the audiobook and exam prep, with full access available via in-app purchases.
- NFPA 1041 compliant instructor training
- Flashcards for key terms and definitions
- Exam preparation with 565 validated questions
- Progress tracking for study sessions
- Full audiobook narration with offline access
- Chapter 1 free access for all features
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The Fire and Emergency Services Instructor, 9th Edition, Companion App is THE IFSTAⓇ source for instructor training. A safe and effective fire service must have capable instructors delivering effective training, and this App is that training at your fingertips. The text includes all NFPA 1041, Standard for Fire Service Instructor Professional Qualifications, (2019) Levels I, II, and III JPRs. Included FREE in this App is Flashcards and Chapter 1 of the Audiobook and Exam Prep. Flashcards: Review all 134 key terms and definitions found in all 18 chapters of the Fire and Emergency Services Instructor, 9th Edition, Manual with Flashcards. This feature is FREE for all users. Exam Prep: Use the 565 IFSTAⓇ-validated Exam Prep questions to confirm your understanding of the content in the Fire and Emergency Services Instructor, 9th Edition, Manual. The Exam Prep covers all 18 chapters of the Manual. Exam Prep tracks and records your progress, allowing you to review your exams and study your weaknesses. In addition, your missed questions are automatically added to your study deck. This feature requires an in-app purchase. All users have free access to Chapter 1. Audiobook: Purchase the Fire and Emergency Services Instructor, 9th Edition, Audiobook through the app. All 18 chapters are narrated in their entirety for 11 hours of content. Features include offline access, bookmarks, and the ability to listen at your own speed. All users have free access to Chapter 1. This App covers the following topics: 1. The Instructor as a Professional 2. Principles of Learning 3. Instructional Planning 4. Instructional Materials and Equipment 5. Learning Environment 6. Classroom Instruction 7. Student Interaction 8. Skills-Based Training Beyond the Classroom 9. Testing and Evaluation 10. Records, Reports, and Scheduling 11. Lesson Plan Development 12. Training Evolution Supervision 13. Test Item Construction 14. Supervisory and Administrative Duties 15. Instructor and Class Evaluations 16. Course and Curriculum Development 17. Training Program Evaluation 18. Training Program Administration
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Verdict
The clearest difference is review sentiment: Water Flow Calculators at 60% against IFSTA Instructor 9's 0%. Water Flow Calculators also leads on rating (4.6 vs 3.2) and in-app purchases (none vs 2). IFSTA Instructor 9's advantage is ratings volume (17 vs 5). 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. IFSTA Instructor 9 sells 2 one-off in-app purchases. Water Flow Calculators asks for nothing beyond the download.
Water Flow Calculators holds the better App Store score, 4.6 against 3.2. Both are backed by a comparable volume of ratings — 5 and 17 respectively. Written reviews point the same way: 60% of Water Flow Calculators's written reviews are positive against 0% of IFSTA Instructor 9's.
Water Flow Calculators ships an update every 2 months, IFSTA Instructor 9 every 10 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.
| Parameter | Water Flow Calculators | IFSTA Instructor 9 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (5 ratings) — better | 3.2 (17 ratings) |
| Positive reviews | 60.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 | 17 — better |
| Update frequency | Every 2 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 41 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Waterous | IFSTA |
Customer experience
Water Flow Calculators
IFSTA Instructor 9
In-app purchases
Water Flow Calculators
No in-app purchases
IFSTA Instructor 9
- Exam Prep$14.99
- Audiobook$30.99
Questions
Is Water Flow Calculators free?
Is IFSTA Instructor 9 free?
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Do Water Flow Calculators or IFSTA Instructor 9 have ads?
Which is updated more often, Water Flow Calculators or IFSTA Instructor 9?
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