SubSpark vs Tagg Subs
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Tagg Subs
This app connects independent substitute teachers with daily teaching opportunities. Users can select their preferred grades and subjects, and set their availability to find jobs that fit their schedule. It functions as a flexible platform for educators seeking contract work.
- Independent contractor model
- Choose grade and subjects
- Set personal availability
- Receive daily job opportunities
- Flexible work schedule
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Instead of being an employee of the school, you work for yourself. As an independent contractor, you can sub when you want and where you want. It’s like Uber for substitute teaching. In the same way that ride-share drivers use Uber to accept ride requests, you use the Tagg platform to receive daily substitute teaching opportunities that interest you. You can choose what grade and subjects you would like to teach as well as when you are available. Adjust your preferences whenever you want!
Screenshots
Verdict
The clearest difference is review sentiment: SubSpark at 100% against Tagg Subs's 0%. SubSpark also leads on rating (5.0 vs 3.0) and update cadence (every 4 days vs every 3 months). 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 3.0. Both are backed by a comparable volume of ratings — 8 and 2 respectively. Written reviews point the same way: 100% of SubSpark's written reviews are positive against 0% of Tagg Subs's.
SubSpark ships an update every 4 days, Tagg Subs every 3 months. The most recent releases landed on September 9, 2026 and August 13, 2026 respectively.
| Parameter | SubSpark | Tagg Subs |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 8 — better | 2 |
| Update frequency | Every 4 days — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.6 |
| Further details — not scored | ||
| Size | 33 MB | 3 MB |
| Age rating | 17+ | 4+ |
| Developer | SubSpark, LLC | Tagg Education, LLC |
Customer experience
SubSpark
Tagg Subs
In-app purchases
SubSpark
No in-app purchases
Tagg Subs
No in-app purchases







