# InstaSub vs Glenburn School

The clearest difference is rating: InstaSub at 4.5 against Glenburn School's 2.0. InstaSub also leads on ratings volume (259 vs 2) and device support (3 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.

InstaSub holds the better App Store score, 4.5 against 2.0. That said, the two scores are not equally well evidenced: InstaSub has 259 ratings behind it against 2, so its average is the more settled of the two.

InstaSub ships an update every 6 weeks, Glenburn School every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | InstaSub | Glenburn School |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (259 ratings)](https://appshunter.io/ios/app/instasub/id1501485445/reviews)** | [2.0 (2 ratings)](https://appshunter.io/ios/app/glenburn-school/id1633655775/reviews) |
| Number of ratings | **259** | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 24 MB | 152 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Humanity.com, LLC](https://appshunter.io/developer/864258525) | [Glenburn School Department](https://appshunter.io/developer/1633656107) |

## What reviewers say

### InstaSub

[App page](https://appshunter.io/ios/app/instasub/id1501485445)

This app streamlines job management for educators and administrators. It allows substitutes to easily accept or decline jobs, while teachers can post and manage absences. Administrators benefit from efficient scheduling and reporting tools.

**Highlights:** Accept/Decline jobs, View job history, Post and manage absences, Schedule substitute requests, Approve/Deny time-off, Absence reporting

**Features:** Vision Pro support

**In-app purchases:** none


### Glenburn School

[App page](https://appshunter.io/ios/app/glenburn-school/id1633655775)

Stay informed about school events, receive customized notifications for your student's organizations, and access weekly cafeteria menus. Get district updates and easily find staff contact information.

**Highlights:** Event calendar with sharing, Customizable student organization notifications, Weekly cafeteria menus, Live district updates feed, Staff and department directory

**In-app purchases:** none


## Frequently asked questions

### Is InstaSub free?

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

### Is Glenburn School free?

Glenburn School is free to download, with no in-app purchases.

### Which has better reviews, InstaSub or Glenburn School?

InstaSub is rated higher. InstaSub averages 4.5 out of 5 from 259 ratings, while Glenburn School averages 2.0 from 2 ratings.

### Do InstaSub or Glenburn School have ads?

Neither InstaSub nor Glenburn School shows ads.

### Which is updated more often, InstaSub or Glenburn School?

InstaSub ships an update every 6 weeks, and Glenburn School every 3 months. Most recently, InstaSub was updated on November 3, 2026 and Glenburn School on November 3, 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.*