# Spec Check vs DAIG Bookshelf

The clearest difference is rating: Spec Check at 5.0 against DAIG Bookshelf's 3.3. DAIG Bookshelf's advantage is review sentiment (25% vs 0%) and ratings volume (7 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Spec Check 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 complicate that: 0% of Spec Check's written reviews are positive against 25% of DAIG Bookshelf's, so the app with the better star average is not the one people write more warmly about.

Spec Check ships an update every 2 months, DAIG Bookshelf every 5 weeks. The most recent releases landed on July 4, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Spec Check | DAIG Bookshelf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/spec-check/id620436905/reviews)** | [3.3 (7 ratings)](https://appshunter.io/ios/app/daig-bookshelf/id1147298600/reviews) |
| Number of ratings | 1 | **7** |
| Positive reviews | 0.0% of reviews | **25.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 29 MB | 402 MB |
| Requires iOS | 15.6 | **8.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Spec Check Ltd](https://appshunter.io/developer/602675391) | [TRADOC Mobile](https://appshunter.io/developer/960437358) |

## What reviewers say

### Spec Check

[App page](https://appshunter.io/ios/app/spec-check/id620436905)

Access a comprehensive database of construction, agriculture, and industrial equipment specifications. Search, compare machines, and download technical reports and brochures.

**Highlights:** Search equipment specifications, Compare machines, Download technical reports, Access brochures and spec sheets, Industry standard data

**Features:** macOS Compatibility

**In-app purchases:** none


### DAIG Bookshelf

[App page](https://appshunter.io/ios/app/daig-bookshelf/id1147298600)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Spec Check free?

Spec Check is free to download, with no in-app purchases.

### Is DAIG Bookshelf free?

DAIG Bookshelf is free to download, with no in-app purchases.

### Which has better reviews, Spec Check or DAIG Bookshelf?

Spec Check is rated higher. Spec Check averages 5.0 out of 5 from 1 ratings, while DAIG Bookshelf averages 3.3 from 7 ratings.

### Do Spec Check or DAIG Bookshelf have ads?

Neither Spec Check nor DAIG Bookshelf shows ads.

### Which is updated more often, Spec Check or DAIG Bookshelf?

Spec Check ships an update every 2 months, and DAIG Bookshelf every 5 weeks. Most recently, Spec Check was updated on July 4, 2026 and DAIG Bookshelf on June 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*