Comparison

InstaSub 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

InstaSub

This app streamlines job management for educators and administrators. It allows substitutes to easily accept or decline jobs, while teachers can post and manage absences. Administrators benefit from efficient scheduling and reporting tools.

Highlights
  • Accept/Decline jobs
  • View job history
  • Post and manage absences
  • Schedule substitute requests
  • Approve/Deny time-off
  • Absence reporting
Features
Read full description

The InstaSub mobile app provides a quick and easy way to view and accept jobs, post absences, request subs and manage absences. Features include: Substitutes can: Accept/Decline jobs with a click View Available Jobs, Scheduled Jobs and Past Jobs View and update Notification Settings for email, text and push alerts Teachers can: Post Absences View Scheduled, Past and Denied Absences Post Internal Coverage Absences Cancel Absences Admins can: Scheduling Sub Requests Approve/Deny time-off requests View Filled Jobs and Unfilled Jobs Daily/Monthly Absence Reports An InstaSub account with Substitute, Teacher, or Admin permission is required to use this app. About InstaSub In addition to our time tracking and employee scheduling solutions, InstaSub gives users the ability to offer a highly efficient way to manage absences for teachers. InstaSub continues to provide K-12 administrators with the functionality they need to ensure optimal staffing, centralized reporting, and automated notifications to streamline communication.

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

InstaSub4 screens
Tagg Subs4 screens

Verdict

The call

The clearest difference is rating: InstaSub at 4.4 against Tagg Subs's 3.0. InstaSub also leads on ratings volume (241 vs 2) and update cadence (every 6 weeks vs every 3 months). On price, review sentiment, 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

InstaSub holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: InstaSub has 241 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

InstaSub ships an update every 6 weeks, Tagg Subs every 3 months. The most recent releases landed on September 21, 2026 and August 13, 2026 respectively.

Scorecard4 real differences · 6 level
InstaSub versus Tagg Subs: the parameters behind the verdict, then further details
ParameterInstaSubTagg Subs
PriceFreeFree
Rating4.4 (241 ratings) — better3.0 (2 ratings)
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings241 — better2
Update frequencyEvery 6 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.6
Further details — not scored
Size24 MB3 MB
Age rating4+4+
DeveloperHumanity.com, LLCTagg Education, LLC

Customer experience

InstaSub

All ratings241 ratings
Positive82.6%
Neutral8.3%
Negative9.1%
Written reviews6 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Tagg Subs

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

In-app purchases

None

InstaSub

No in-app purchases

None

Tagg Subs

No in-app purchases

Questions

Is InstaSub free?
InstaSub 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, InstaSub or Tagg Subs?
InstaSub is rated higher. InstaSub averages 4.4 out of 5 from 241 ratings, while Tagg Subs averages 3.0 from 2 ratings.
Do InstaSub or Tagg Subs have ads?
Neither InstaSub nor Tagg Subs shows ads.
Which is updated more often, InstaSub or Tagg Subs?
InstaSub ships an update every 6 weeks, and Tagg Subs every 3 months. Most recently, InstaSub was updated on September 21, 2026 and Tagg Subs on August 13, 2026.

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