Comparison

DAIG Bookshelf vs Cold Weather Ops

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Local copy of publications
  • Publicly available IG documents
  • Time-saving access
  • Disconnected use
  • Reference material
Features
Read full description

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.

About

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.

Highlights
  • Snowfall intensity calculations
  • Anti-icing holdover time access
  • Runway condition information
  • Altimeter corrections for cold conditions
  • Holdover time expiration timer
  • Runway cleared width calculator
Features
Read full description

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

DAIG Bookshelf3 screens
Cold Weather Ops4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
DAIG Bookshelf versus Cold Weather Ops: the parameters behind the verdict, then further details
ParameterDAIG BookshelfCold Weather Ops
PriceFreeFree
Rating3.3 (7 ratings)5.0 (1 ratings) — better
Positive reviews25.0% of reviews33.3% of reviews — better
Number of ratings7 — better1
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterSubscription
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better17.6
Further details — not scored
Size402 MB10 MB
Age rating4+4+
DeveloperTRADOC MobileAdrian Patterson

Customer experience

DAIG Bookshelf

All ratings7 ratings
Positive57.1%
Neutral0.0%
Negative42.9%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

Cold Weather Ops

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

In-app purchases

None

DAIG Bookshelf

No in-app purchases

1 purchases

Cold Weather Ops

Subscriptions1
  • App access$2.991 Year

Questions

Is DAIG Bookshelf free?
DAIG Bookshelf is free to download, with no in-app purchases.
Is Cold Weather Ops free?
Cold Weather Ops is free to download, with in-app purchases available.
Which has better reviews, DAIG Bookshelf or Cold Weather Ops?
Cold Weather Ops is rated higher. DAIG Bookshelf averages 3.3 out of 5 from 7 ratings, while Cold Weather Ops averages 5.0 from 1 ratings.
Do DAIG Bookshelf or Cold Weather Ops have ads?
Neither DAIG Bookshelf nor Cold Weather Ops shows ads.
Which is updated more often, DAIG Bookshelf or Cold Weather Ops?
DAIG Bookshelf ships an update every 5 weeks, and Cold Weather Ops every 3 months. Most recently, DAIG Bookshelf was updated on November 2, 2026 and Cold Weather Ops on November 3, 2026.

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