# DriveThruRPG Library vs Instant Armory

The clearest difference is review sentiment: Instant Armory at 85% against DriveThruRPG Library's 29%. Instant Armory also leads on rating (4.7 vs 3.1) and update cadence (fortnightly vs every 9 months). DriveThruRPG Library's advantage is in-app purchases (none vs 7). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Instant Armory sells 7 one-off in-app purchases. DriveThruRPG Library asks for nothing beyond the download.

Instant Armory holds the better App Store score, 4.7 against 3.1. That said, the two scores are not equally well evidenced: Instant Armory has 267 ratings behind it against 31, so its average is the more settled of the two. Written reviews point the same way: 29% of DriveThruRPG Library's written reviews are positive against 85% of Instant Armory's.

DriveThruRPG Library ships an update every 9 months, Instant Armory fortnightly. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | DriveThruRPG Library | Instant Armory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (31 ratings)](https://appshunter.io/ios/app/drivethrurpg-library/id1425976251/reviews) | **[4.7 (267 ratings)](https://appshunter.io/ios/app/instant-armory/id6448971386/reviews)** |
| Number of ratings | 31 | **267** |
| Positive reviews | 29.2% of reviews | **84.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Fortnightly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 49 MB | 151 MB |
| Requires iOS | **14.5** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [OneBookShelf, Inc.](https://appshunter.io/developer/442207598) | [TrapStreet Studios](https://appshunter.io/developer/1457518363) |

## What reviewers say

### DriveThruRPG Library

[App page](https://appshunter.io/ios/app/drivethrurpg-library/id1425976251)

Easily sync and organize your entire collection of RPG files on your mobile device. Keep your digital library updated automatically and access any file with your preferred viewer. Access purchases from various OneBookShelf sites.

**Highlights:** Sync entire library to device, Organize by publisher/rule system, Custom collection organization, Automatic file updates, Open files in favorite viewer, Access OneBookShelf purchases

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Organizes DTRPG library
- 👍 Good for reading PDFs
- 👍 Useful for organizing purchases
- 👍 Syncs to account
- 👍 Downloads PDFs to devices

**What reviewers complain about**

- 🐛 App won't launch
- 🐛 App crashes on start
- 🐛 Downloads fail
- 🐛 Syncing problems
- 🐛 Bare bones functionality

**Reported bugs**

- App flashes logo and crashes
- App won't launch
- App crashes on start
- Login doesn't work
- Syncing problem

**Requested features**

- Add landscape for iPhones
- Add notification or live activity for downloads
- Add iCloud storage option for MacOS/iPad
- Add bookmarking system
- Add horizontal page swipe controls


### Instant Armory

[App page](https://appshunter.io/ios/app/instant-armory/id6448971386)

Create custom arms, armor, and equipment for fantasy tabletop RPGs with a vast library of hand-drawn art. Record descriptions and stats, then roll dice within the app or print physical cards for your games.

**Highlights:** Design custom fantasy equipment, Extensive hand-drawn art library, Record descriptions and stats, In-app dice rolling, Printable equipment cards

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 COIN | $0.49 | one-time |
| 5 COINS | $1.99 | one-time |
| 10 COINS | $3.99 | one-time |
| Gift Unlock Content | $7.99 | one-time |
| Gift Unlock Everything | $7.99 | one-time |
| Unlock Content | $9.99 | one-time |
| Unlock Everything | $9.99 | one-time |

**What reviewers like**

- 🎨 Great for designing items
- 🖌️ Amazing artwork and design
- 👍 User-friendly interface
- 💡 Useful for DMs
- 🚀 Saves time for DMs

**What reviewers complain about**

- 💸 Too much paywall/DLC
- 💰 Limited free content
- 🪙 Difficult to get coins
- 🔓 Many features locked
- 🛒 High DLC pricing perception

**Reported bugs**

- Constant crashing
- Cannot purchase items on cellular data
- Unlock all features bug (resolved)

**Requested features**

- More shields with varied options
- Add crossbows
- Design bard instruments
- More armor variants
- More customization options


## Frequently asked questions

### Is DriveThruRPG Library free?

DriveThruRPG Library is free to download, with no in-app purchases.

### Is Instant Armory free?

Instant Armory is free to download, with in-app purchases available.

### Which has better reviews, DriveThruRPG Library or Instant Armory?

Instant Armory is rated higher. DriveThruRPG Library averages 3.1 out of 5 from 31 ratings, while Instant Armory averages 4.7 from 267 ratings.

### Do DriveThruRPG Library or Instant Armory have ads?

Neither DriveThruRPG Library nor Instant Armory shows ads.

### Which is updated more often, DriveThruRPG Library or Instant Armory?

DriveThruRPG Library ships an update every 9 months, and Instant Armory fortnightly. Most recently, DriveThruRPG Library was updated on October 26, 2026 and Instant Armory on October 27, 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.*