# SubAlert for Frontline Ed vs InstaSub

The clearest difference is review sentiment: SubAlert for Frontline Ed at 75% against InstaSub's 0%. SubAlert for Frontline Ed also leads on rating (4.8 vs 4.5) and ratings volume (17K vs 259). 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.

SubAlert for Frontline Ed holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: SubAlert for Frontline Ed has 17K ratings behind it against 259, so its average is the more settled of the two. Written reviews point the same way: 75% of SubAlert for Frontline Ed's written reviews are positive against 0% of InstaSub's.

SubAlert for Frontline Ed ships an update every 3 months, InstaSub every 6 weeks. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | SubAlert for Frontline Ed | InstaSub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (17K ratings)](https://appshunter.io/ios/app/subalert-for-frontline-ed/id557785741/reviews)** | [4.5 (259 ratings)](https://appshunter.io/ios/app/instasub/id1501485445/reviews) |
| Number of ratings | **17K** | 259 |
| Positive reviews | **75.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 8 MB | 24 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SubstituteAlert.com](https://appshunter.io/developer/557785744) | [Humanity.com, LLC](https://appshunter.io/developer/864258525) |

## What reviewers say

### SubAlert for Frontline Ed

[App page](https://appshunter.io/ios/app/subalert-for-frontline-ed/id557785741)

Get instant job alerts for substitute teaching positions through notifications, text, or calls. Book jobs with a single click, view job details, and sync your schedule with your device's calendar. Filter alerts to receive only desired job opportunities.

**Highlights:** Instant job alerts via notification, text, or call, One-click job booking, View job details and teacher notes, Sync scheduled jobs to device calendar, Customizable job alert filters, Multi-district account management

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🚀 Faster than Frontline and Jobulator
- 👍 Convenient and easy to use
- 📆 Syncs with calendar
- 🗺️ Provides school address and directions
- 💰 Worth the monthly cost

**What reviewers complain about**

- 🐛 Occasional issues with notifications
- ⏱️ Jobs get booked quickly
- 🔍 Difficult to comprehend all the information at once

**Reported bugs**

- No notifications received for some jobs
- Unable to book jobs through the app

**Requested features**

- Add Apple Watch compatibility
- Improve interface and layout
- Provide calendar view like Frontline


### 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


## Frequently asked questions

### Is SubAlert for Frontline Ed free?

SubAlert for Frontline Ed is free to download, with no in-app purchases.

### Is InstaSub free?

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

### Which has better reviews, SubAlert for Frontline Ed or InstaSub?

SubAlert for Frontline Ed is rated higher. SubAlert for Frontline Ed averages 4.8 out of 5 from 17K ratings, while InstaSub averages 4.5 from 259 ratings.

### Do SubAlert for Frontline Ed or InstaSub have ads?

Neither SubAlert for Frontline Ed nor InstaSub shows ads.

### Which is updated more often, SubAlert for Frontline Ed or InstaSub?

SubAlert for Frontline Ed ships an update every 3 months, and InstaSub every 6 weeks. Most recently, SubAlert for Frontline Ed was updated on October 31, 2026 and InstaSub on October 29, 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.*