willSub for Substitutes vs SubSpark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
willSub for Substitutes
Easily find, accept, and manage your substitute teaching jobs. Receive instant notifications for new opportunities, view job details with maps, and track your work history and pay. Manage your schedule and preferences efficiently.
- Live job list
- Instant job notifications
- Accept/decline jobs
- Detailed job info with map
- Job confirmation alerts
- Cancel jobs
- View job history
- Track pay
- Manage time off
- Modify preferences
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The quickest, easiest way to find, get and manage the jobs you want. With willSub for Substitutes, you can: • See a live list of all of your available and upcoming jobs. • Get live notifications of new jobs, both in-app and as push notifications. • Quickly tap to accept or decline a job. • View detailed job info, including a map. • Get notified when an accepted job is confirmed. • Cancel an upcoming job. • View job history for the current and previous school year. • View processed and unprocessed pay. • Add, view and cancel unpaid time off. • Modify worksite and workday preferences.
SubSpark
This app streamlines substitute teacher management for schools. It allows administrators and teachers to quickly find, book, and manage substitute educators, eliminating the need for traditional, time-consuming methods. The platform aims to ensure consistent coverage and reduce scheduling chaos.
- Fast and easy booking of substitute teachers
- Build and manage preferred substitute lists
- All-in-one admin dashboard (desktop)
- Intuitive and user-friendly interface
- Reduces scheduling complexity
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Simplify substitute teacher management with SubSpark. SubSpark helps school administrators and teachers find, book, and manage substitute teachers—fast. Inspired by the convenience of ride-sharing apps, SubSpark brings modern tech to the education sector so schools never have to scramble for coverage again. Key Features: -Fast, Easy Booking: Find and request subs in just a few taps—no phone tag, no spreadsheets, no sticky notes. -Preferred Sub List: Build and manage your own internal network of trusted subs for continuity and peace of mind. -All-in-One Admin Dashboard (Desktop Only): School leaders can manage users, track teacher absences, and job status. -Clean, Intuitive Design: Built for busy educators with a user-friendly interface that makes sense from the start. Whether you’re in the classroom or the front office, SubSpark takes the hassle out of sub scheduling. Download now and take the chaos out of coverage.
Screenshots
Verdict
The clearest difference is review sentiment: SubSpark at 100% against willSub for Substitutes's 14%. SubSpark also leads on rating (5.0 vs 2.0) and update cadence (every 5 days vs fortnightly). On price, ads, in-app purchases and monetization model 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.
SubSpark holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 8 respectively. Written reviews point the same way: 14% of willSub for Substitutes's written reviews are positive against 100% of SubSpark's.
willSub for Substitutes ships an update fortnightly, SubSpark every 5 days. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | willSub for Substitutes | SubSpark |
|---|---|---|
| Price | Free | Free |
| Rating | 2.0 (2 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 13.6% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 8 — better |
| Update frequency | Fortnightly | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 12 MB | 33 MB |
| Age rating | 4+ | 17+ |
| Developer | ESS Midwest Inc. | SubSpark, LLC |
Customer experience
willSub for Substitutes
SubSpark
Bugs and requests
willSub for Substitutes
Reported bugs
12 issues- App freezes on loading screen
- Login button greyed out
- App not opening after updates
- Not receiving job notifications
- Not receiving text notifications
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- Auto-login not working
- App logs out frequently
- Cannot log in after updates
- Incorrect password/ID errors
- Jobs showing incorrectly (available when taken/declined)
- App not accessible on district Wi-Fi
- Login fields not accessible
Requested features
5 requests- Add to calendar option
- Calendar integration (Apple/Google)
- Dark mode
- Ability to switch between multiple districts easily
- Improved notification system
SubSpark
Not enough reviews yet to summarise bugs or requests.
In-app purchases
willSub for Substitutes
No in-app purchases
SubSpark
No in-app purchases
Questions
Is willSub for Substitutes free?
Is SubSpark free?
Which has better reviews, willSub for Substitutes or SubSpark?
Do willSub for Substitutes or SubSpark have ads?
Which is updated more often, willSub for Substitutes or SubSpark?
Other comparisons
