Comparison

willSub for Substitutes vs SubSpark

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

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.

Highlights
  • 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
Read full description

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

willSub for Substitutes4 screens
SubSpark4 screens

Verdict

The call

The clearest difference is review sentiment: SubSpark at 100% against willSub for Substitutes's 14%. SubSpark also leads on rating (5.0 vs 2.6) and update cadence (every 4 days vs fortnightly). On price, ratings volume, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

SubSpark holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 9 and 8 respectively. Written reviews point the same way: 14% of willSub for Substitutes's written reviews are positive against 100% of SubSpark's.

UpkeepUpdate frequency

willSub for Substitutes ships an update fortnightly, SubSpark every 4 days. The most recent releases landed on August 25, 2026 and September 9, 2026 respectively.

Scorecard3 real differences · 7 level
willSub for Substitutes versus SubSpark: the parameters behind the verdict, then further details
ParameterwillSub for SubstitutesSubSpark
PriceFreeFree
Rating2.6 (9 ratings)5.0 (8 ratings) — better
Positive reviews13.6% of reviews100.0% of reviews — better
Number of ratings9 — better8
Update frequencyFortnightlyEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size12 MB33 MB
Age rating4+17+
DeveloperESS Midwest Inc.SubSpark, LLC

Customer experience

willSub for Substitutes

All ratings9 ratings
Positive33.3%
Neutral11.1%
Negative55.6%
Written reviews44 reviews
Positive13.6%
Neutral4.5%
Negative81.8%

SubSpark

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

willSub for Substitutes

No in-app purchases

None

SubSpark

No in-app purchases

Questions

Is willSub for Substitutes free?
willSub for Substitutes is free to download, with no in-app purchases.
Is SubSpark free?
SubSpark is free to download, with no in-app purchases.
Which has better reviews, willSub for Substitutes or SubSpark?
SubSpark is rated higher. willSub for Substitutes averages 2.6 out of 5 from 9 ratings, while SubSpark averages 5.0 from 8 ratings.
Do willSub for Substitutes or SubSpark have ads?
Neither willSub for Substitutes nor SubSpark shows ads.
Which is updated more often, willSub for Substitutes or SubSpark?
willSub for Substitutes ships an update fortnightly, and SubSpark every 4 days. Most recently, willSub for Substitutes was updated on August 25, 2026 and SubSpark on September 9, 2026.

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