Comparison

I'm In vs BurnTheory

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

Head to head

About

I'm In

Features

Read full description

‘I’m in’ is a fast and easy way to record your attendance at your next healthy lifestyle session. With this app you only need to fill out your details once, it will generate your personal QR code which will sit on your home screen, then simply show your code to the instructor when you arrive. It’s that easy. It allows instructors and session leaders to easily track hundreds of attendees across lots of different projects. Features of app: • Easy to use • Fill out your details only once • Replaces paper ‘waiver’ forms • Gives important information to the instructor or session leader • Your details are securely stored

About

BurnTheory

Features

Read full description

BurnTheory delivers body-sculpting, strengthening and toning Boxing, Barre and Core workouts in just 45 minutes, with a massive side of whole-self, real-world health. Download the App to easily book classes, access our at-home THRIVE online program and manage your fitness and health experience all from your device.

Screenshots

I'm In4 screens

BurnTheory4 screens

Verdict

The call

The clearest difference is device support: I'm In at 3 against BurnTheory's 1. I'm In also leads on iOS requirement (13.4 vs 16.0). On price, update cadence, 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.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and October 27, 2026 respectively.

Scorecard2 real differences · 4 level

I'm In versus BurnTheory: the parameters behind the verdict, then further details
Parameter	I'm In	BurnTheory
Price	Free	Free
Update frequency	Every 2 months	Every 2 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod — better	iPhone
Requires iOS	13.4 — better	16.0
Further details — not scored
Size	34 MB	173 MB
Age rating	4+	9+
Developer	C9 Pty. Ltd.	Burn Theory

In-app purchases

None

I'm In

No in-app purchases

None

BurnTheory

No in-app purchases

Questions

Is I'm In free?

I'm In is free to download, with no in-app purchases.

Is BurnTheory free?

BurnTheory is free to download, with no in-app purchases.

Do I'm In or BurnTheory have ads?

Neither I'm In nor BurnTheory shows ads.

Which is updated more often, I'm In or BurnTheory?

I'm In ships an update every 2 months, and BurnTheory every 2 months. Most recently, I'm In was updated on November 2, 2026 and BurnTheory on October 27, 2026.