# Gartman NXP vs NIU Guidebook

Gartman NXP and NIU Guidebook are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Gartman NXP ships an update every 5 months, NIU Guidebook every 3 months. Both last shipped on October 25, 2026.

## The numbers

| Metric | Gartman NXP | NIU Guidebook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 months** |
| Size | 44 MB | 62 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Gartman Systems](https://appshunter.io/developer/934422062) | [Northern Illinois University](https://appshunter.io/developer/439798392) |

## What reviewers say

### Gartman NXP

[App page](https://appshunter.io/ios/app/gartman-nxp/id1668012737)

**Features:** macOS Compatibility

**In-app purchases:** none


### NIU Guidebook

[App page](https://appshunter.io/ios/app/niu-guidebook/id6448857630)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Gartman NXP free?

Gartman NXP is free to download, with no in-app purchases.

### Is NIU Guidebook free?

NIU Guidebook is free to download, with no in-app purchases.

### Do Gartman NXP or NIU Guidebook have ads?

Neither Gartman NXP nor NIU Guidebook shows ads.

### Which is updated more often, Gartman NXP or NIU Guidebook?

Gartman NXP ships an update every 5 months, and NIU Guidebook every 3 months. Most recently, Gartman NXP was updated on October 25, 2026 and NIU Guidebook on October 25, 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.*