# SubItUp vs NIU Guidebook

The clearest difference is update cadence: SubItUp at every 2 weeks against NIU Guidebook's every 3 months. On price, ads, in-app purchases and device support there is nothing between them.

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

SubItUp ships an update every 2 weeks, NIU Guidebook every 3 months. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | SubItUp | NIU Guidebook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.9 (231 ratings)](https://appshunter.io/ios/app/subitup/id468245296/reviews)** | — |
| Number of ratings | **231** | — |
| Positive reviews | 13.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free | — |
| Size | 48 MB | 62 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [SubItUp, Inc.](https://appshunter.io/developer/468245301) | [Northern Illinois University](https://appshunter.io/developer/439798392) |

## What reviewers say

### SubItUp

[App page](https://appshunter.io/ios/app/subitup/id468245296)

Manage your work schedule, request time off, and swap shifts with colleagues. For managers, this app allows for shift creation, editing, and approval of requests.

**Highlights:** View work schedule, Request time off, Add, Drop, or Swap shifts, Create and edit shifts, Approve shift requests, Approve RTOs

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

**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 SubItUp free?

SubItUp 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 SubItUp or NIU Guidebook have ads?

Neither SubItUp nor NIU Guidebook shows ads.

### Which is updated more often, SubItUp or NIU Guidebook?

SubItUp ships an update every 2 weeks, and NIU Guidebook every 3 months. Most recently, SubItUp was updated on September 21, 2026 and NIU Guidebook on September 17, 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.*