Comparison

SubSpark vs Tagg Subs

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

Head to head
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.

About

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.

Highlights
  • Independent contractor model
  • Choose grade and subjects
  • Set personal availability
  • Receive daily job opportunities
  • Flexible work schedule
Read full description

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

SubSpark4 screens
Tagg Subs4 screens

Verdict

The call

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

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 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.

UpkeepUpdate frequency

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.

Scorecard4 real differences · 6 level
SubSpark versus Tagg Subs: the parameters behind the verdict, then further details
ParameterSubSparkTagg Subs
PriceFreeFree
Rating5.0 (8 ratings) — better3.0 (2 ratings)
Positive reviews100.0% of reviews — better0.0% of reviews
Number of ratings8 — better2
Update frequencyEvery 4 days — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.1 — better16.6
Further details — not scored
Size33 MB3 MB
Age rating17+4+
DeveloperSubSpark, LLCTagg Education, LLC

Customer experience

SubSpark

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

Tagg Subs

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

SubSpark

No in-app purchases

None

Tagg Subs

No in-app purchases

Questions

Is SubSpark free?
SubSpark is free to download, with no in-app purchases.
Is Tagg Subs free?
Tagg Subs is free to download, with no in-app purchases.
Which has better reviews, SubSpark or Tagg Subs?
SubSpark is rated higher. SubSpark averages 5.0 out of 5 from 8 ratings, while Tagg Subs averages 3.0 from 2 ratings.
Do SubSpark or Tagg Subs have ads?
Neither SubSpark nor Tagg Subs shows ads.
Which is updated more often, SubSpark or Tagg Subs?
SubSpark ships an update every 4 days, and Tagg Subs every 3 months. Most recently, SubSpark was updated on September 9, 2026 and Tagg Subs on August 13, 2026.

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