NAPMobile vs Yellow Book Reference
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NAPMobile
Learn parliamentary procedure and Robert's Rules of Order with this official app. It serves as a reference for general knowledge and preparation for professional certification exams. Includes quiz questions and a vote/ballot calculator.
- Parliamentary procedure reference
- Robert's Rules of Order
- Exam preparation
- Quiz questions
- Vote/ballot calculator
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Become more knowledgable about parliamentary procedure and Robert’s Rules of Order with the official app of the National Association of Parliamentarians. Use the app as a reference for general parliamentary procedure knowledge and as practice for the NAP membership exam and Registered Parliamentarian exam. Features: Quiz questions Vote/ballot calculator
Yellow Book Reference
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Yellow Book Reference gives you fast, searchable access to the hazard classification data found in the U.S. Army Defense Ammunition Center's Yellow Book, Revision 19 (February 2021). Look up hazard classes and DODIC-related classification information for U.S. military explosives and munitions, all from an offline app built for field and warehouse use. Key features: - Full offline access -- no internet connection required once installed - Fast search across hazard classification data - Clean, mobile-friendly layout for quick field reference - No ads, no account required, no data collection This app is an independent reference tool for ammunition surveillance personnel, safety officers, and logistics staff who need quick access to hazard classification information. It reproduces publicly available reference data for informational purposes only and is not affiliated with, endorsed by, or sponsored by the Department of Defense, U.S. Army, or the Defense Ammunition Center. Always confirm current classifications against official published sources before making operational or safety decisions.
Screenshots
Verdict
The clearest difference is price: NAPMobile at Free against Yellow Book Reference's $9.99. NAPMobile also leads on iOS requirement (11.0 vs 15.0). Yellow Book Reference's advantage is chart position (#181 vs unranked). On ads, in-app purchases 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
NAPMobile is free to download; Yellow Book Reference costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | NAPMobile | Yellow Book Reference |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 2.6 (8 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 3 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Best chart rank | — | #181 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 11.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 21 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Cerenimbus | Armando Archuleta |
In-app purchases
NAPMobile
No in-app purchases
Yellow Book Reference
No in-app purchases
Questions
Is NAPMobile free?
Is Yellow Book Reference free?
Do NAPMobile or Yellow Book Reference have ads?
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