SchoolAxis CURB vs InstaSub
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SchoolAxis CURB
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App used in conjunction with SchoolAxis CURB module to automated child pickup systems. This app requires a SchoolAxis CURB account.
InstaSub
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.
- Accept/Decline jobs
- View job history
- Post and manage absences
- Schedule substitute requests
- Approve/Deny time-off
- Absence reporting
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The InstaSub mobile app provides a quick and easy way to view and accept jobs, post absences, request subs and manage absences. Features include: Substitutes can: Accept/Decline jobs with a click View Available Jobs, Scheduled Jobs and Past Jobs View and update Notification Settings for email, text and push alerts Teachers can: Post Absences View Scheduled, Past and Denied Absences Post Internal Coverage Absences Cancel Absences Admins can: Scheduling Sub Requests Approve/Deny time-off requests View Filled Jobs and Unfilled Jobs Daily/Monthly Absence Reports An InstaSub account with Substitute, Teacher, or Admin permission is required to use this app. About InstaSub In addition to our time tracking and employee scheduling solutions, InstaSub gives users the ability to offer a highly efficient way to manage absences for teachers. InstaSub continues to provide K-12 administrators with the functionality they need to ensure optimal staffing, centralized reporting, and automated notifications to streamline communication.
Screenshots
Verdict
The clearest difference is update cadence: InstaSub at every 6 weeks against SchoolAxis CURB's every 8 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
SchoolAxis CURB ships an update every 8 months, InstaSub every 6 weeks. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.
| Parameter | SchoolAxis CURB | InstaSub |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.4 (255 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 255 — better |
| Update frequency | Every 8 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 75 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Canopy Network, LLC | Humanity.com, LLC |
In-app purchases
SchoolAxis CURB
No in-app purchases
InstaSub
No in-app purchases
Questions
Is SchoolAxis CURB free?
Is InstaSub free?
Do SchoolAxis CURB or InstaSub have ads?
Which is updated more often, SchoolAxis CURB or InstaSub?
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