Army Engineer Guide vs Evidence
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Army Engineer Guide
This app provides essential engineering tools and references for military engineers. It offers unit converters, construction calculators, and planning resources designed for offline use in the field. Access field manuals and helpful links without ads or subscriptions.
- Unit Converters (Metric/US/Military)
- Construction Calculators (Concrete, Lumber, Excavation, Sandbag)
- Range Finder
- Customizable Packing Lists
- Field Notes Journal
- Offline Access to Field References
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Army Engineer Guide, first published in 2012, totally rebuilt and deployed for 2025 by our New School Army project. Army Engineer tools & reference, no ads, no subscriptions, no accounts and log ins, no data collection, just straight gas to get your Essayons On. ESSENTIAL ENGINEERING TOOLS: Unit Converters - Convert between metric and U.S. units for distance, weight, volume, temperature, area, pressure, and speed. Includes specialized military-specific conversions to support field operations. CONSTRUCTION SUPPORT: Concrete Calculator - Calculate concrete volume, bags, and weight for construction projects with precision. Support for rectangular, circular, and L-shaped designs. Lumber & Nails Calculator - Estimate materials needed for wooden structures. Plan efficiently and eliminate waste. Excavation Calculator - Calculate soil volume and equipment requirements for field fortifications and defensive positions. Sandbag Calculator - Sums up the number of sandbags needed to construct a sandbag wall and estimates the time required based on number of people and speed to fill a sandbag. Individual PLANNING: Range Finder - Visualize distances and ranges on tactical maps. Perfect for developing range estimation skills and planning defensive positions. Packing List - Create, customize and share detailed packing lists for engineering missions. Ensure your team has the right equipment every time. Journal - Document lessons learned and keep field notes organized in one secure location. ADDITIONAL RESOURCES: Field References - Quick access to FM 3-34 and other essential engineering references. Helpful Links - Curated web links for Engineers (schoolhouse, Army engineer Association and so on...). FEATURES THAT MATTER: - Zero cloud dependency - your data stays on your device - No account required - download and start immediately - Built-in sharing for calculations and plans - Designed for offline use in the field Perfect for Combat Engineers, Construction Engineers, and Engineer Leaders who need reliable, offline access to technical calculators and planning tools.
Evidence
This app provides law enforcement officers and community members with quick, actionable information to address crime and improve safety. It offers summaries of key research and practical tips, designed to be easily understood and applied without extensive reading.
- Actionable crime-fighting information
- Summaries of key research
- Practical tips and strategies
- Designed for quick understanding
- Supports community safety initiatives
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"The Evidence-Based Policing App is a project of the Police Foundation, a national, non-profit organization dedicated to improving policing through science and innovation. The App was developed in partnership with George Mason University’s Center for Evidence-Based Crime Policy’s (CEBCP) and the International Association of Chiefs of Police (IACP). The Evidence-Based Policing App is designed to provide law enforcement officers, crime prevention advocates, community members and others on the front-lines of community safety with quick, actionable information to confront crime and safety problems and to improve law enforcement. Although supporting research is made available in the App, it has been designed to “get to the point” and provide practitioners with immediate action steps without requiring research or hours of reading and discerning scientific materials to determine what works. While a substantial portion of the strategies identified in the App have been derived from CEBCP’s Evidence-Based Policing Matrix Project, the App also offers limited practical tips and strategies in emerging areas of concern or focus that can be considered ideas worthy of careful exploration and experimentation, but don’t yet have the required research support to be considered “evidence-based or “evidence-informed.” Additionally, the App provides easily consumed summaries of key research and evaluation literature to support practitioners and policymakers in their need to embrace science in policing and to remain aware of and understand the research that contributes to our understanding of what works. The Police Foundation and its partner organizations are committed to expanding the App’s content and usefulness and as funding resources are identified, new material and features can be added. We recognize that the App is a “living” resource, to be further developed and expanded over time. For more about the Police Foundation, visit www.policefoundation.org"
Screenshots
Verdict
The clearest difference is price: Evidence at Free against Army Engineer Guide's $0.99. Evidence also leads on update cadence (weekly vs every 3 months) and iOS requirement (6.0 vs 12.0). 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
Evidence is free to download; Army Engineer Guide costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Army Engineer Guide ships an update every 3 months, Evidence weekly. The most recent releases landed on October 15, 2026 and September 27, 2026 respectively.
| Parameter | Army Engineer Guide | Evidence |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | — | 2.7 (3 ratings) — better |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 6.0 — better |
| Further details — not scored | ||
| Size | 38 MB | 9 MB |
| Age rating | 17+ | 4+ |
| Developer | Polemics Applications LLC | The Police Foundation |
Customer experience
Army Engineer Guide
Evidence
In-app purchases
Army Engineer Guide
No in-app purchases
Evidence
No in-app purchases
Questions
Is Army Engineer Guide free?
Is Evidence free?
Do Army Engineer Guide or Evidence have ads?
Which is updated more often, Army Engineer Guide or Evidence?
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