# willSub for Substitutes vs SubSpark

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.

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 2.6. 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.

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.

## The numbers

| Metric | willSub for Substitutes | SubSpark |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (9 ratings)](https://appshunter.io/ios/app/willsub-for-substitutes/id1517891212/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/subspark/id6575345302/reviews)** |
| Number of ratings | **9** | 8 |
| Positive reviews | 13.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | Free | Free |
| Size | 12 MB | 33 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [ESS Midwest Inc.](https://appshunter.io/developer/1460797431) | [SubSpark, LLC](https://appshunter.io/developer/1759240288) |

## What reviewers say

### willSub for Substitutes

[App page](https://appshunter.io/ios/app/willsub-for-substitutes/id1517891212)

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:** macOS Compatibility

**In-app purchases:** none


### SubSpark

[App page](https://appshunter.io/ios/app/subspark/id6575345302)

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

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*