DAIG Bookshelf vs Cold Weather Ops
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DAIG Bookshelf
Access a local library of commonly used, publicly available Army Inspector General publications. This app is designed for offline use, saving you time and providing essential documents when disconnected.
- Local copy of publications
- Publicly available IG documents
- Time-saving access
- Disconnected use
- Reference material
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The DAIG (Department of the ARMY Inspector General) bookshelf is a time-saving application that provides a local copy of commonly used publicly available IG publications. These are intended for disconnected use.
Cold Weather Ops
Provides pilots with quick access to critical flight information, including snowfall intensity, holdover times, runway conditions, and altimeter corrections. Simplifies complex calculations and reduces the need to consult extensive documentation.
- Snowfall intensity calculations
- Anti-icing holdover time access
- Runway condition information
- Altimeter corrections for cold conditions
- Holdover time expiration timer
- Runway cleared width calculator
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Cold Weather Ops is an app that gives simple and intuitive access to information that would otherwise require pilots to troll through pages and pages of documents, or make critical calculations based on tabulated information. The app includes:- Snowfall Intensity - Make 3 simple selections to find out the snowfall intensity for use in Holdover Time calculations. Holdover Times - A simple and intuitive interface to gain access to anti-icing holdover times, based on the current FAA Guidelines tables. The form builds in a logical sequence, with all notes (including restrictions, Lowest Operational Use Temperatures, condition descriptions, etc) appearing at the relevant points in the process - avoiding the need to have to troll through pages of documents. Once a holdover time has been generated, a timer is available to set a reminder for when the holdover time has expired. Runway Conditions - A tool to quickly gain information about generic Braking Action and Runway Condition Code associated with the various types of runway contaminants. A description of each condition is provided along with what can be expected with the different Braking Action levels. Also included is a simple calculator to work out the runway cleared width in metres, when given by ATC in feet (when required for reducing maximum crosswind figures). Holdover Data is updated each winter to reflect the latest FAA guidelines. Altimeter Corrections - By using the mathematical formula from ICAO Doc 8168, this tool provides accurate altimeter information for flying approaches in colder than standard conditions - removing the need to make calculations/interpolation of tabulated figures. Annual subscription required to use this app. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Cold Weather Ops at 5.0 against DAIG Bookshelf's 3.3. Cold Weather Ops also leads on review sentiment (33% vs 25%). DAIG Bookshelf's advantage is in-app purchases (none vs 1) and update cadence (every 5 weeks vs every 3 months). 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. Cold Weather Ops sells 1 in-app purchase, starting at $2.99 per year. DAIG Bookshelf asks for nothing beyond the download.
Cold Weather Ops holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: DAIG Bookshelf has 7 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 25% of DAIG Bookshelf's written reviews are positive against 33% of Cold Weather Ops's.
DAIG Bookshelf ships an update every 5 weeks, Cold Weather Ops every 3 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | DAIG Bookshelf | Cold Weather Ops |
|---|---|---|
| Price | Free | Free |
| Rating | 3.3 (7 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 25.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 7 — better | 1 |
| Update frequency | Every 5 weeks — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 402 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | TRADOC Mobile | Adrian Patterson |
Customer experience
DAIG Bookshelf
Cold Weather Ops
In-app purchases
DAIG Bookshelf
No in-app purchases
Cold Weather Ops
- App access$2.991 Year






