Comparison

GEMS Study vs GT Gymnastics

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

Head to head

GEMS Study

For GEMS study participants

About

GEMS Study

Read full description

GEMS is designed to help people make informed choices about their health. The app is only intended for use by participants in the GEMS study. It is not intended for the general public. App activation and use requires an access code and verification of study participants’ identity. GEMS participants must install and set up the app to complete study enrollment.

About

GT Gymnastics

Features

Read full description

Your link to GT Performance Gymnastics Training Center on the go! Use the new GT Gymnastics app to find and register for classes, view attendance records, and more! Be sure to subscribe to push notifications to stay up to date.

Screenshots

GEMS Study3 screens

GT Gymnastics4 screens

Verdict

The call

The clearest difference is device support: GT Gymnastics at 3 against GEMS Study's 1. GT Gymnastics also leads on iOS requirement (15.1 vs 17.0). 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

GEMS Study ships an update every 2 months, GT Gymnastics every 6 weeks. The most recent releases landed on November 10, 2026 and November 9, 2026 respectively.

Scorecard2 real differences · 4 level

GEMS Study versus GT Gymnastics: the parameters behind the verdict, then further details
Parameter	GEMS Study	GT Gymnastics
Price	Free	Free
Update frequency	Every 2 months	Every 6 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone	iPhone, iPad, iPod — better
Requires iOS	17.0	15.1 — better
Further details — not scored
Size	152 MB	68 MB
Age rating	17+	4+
Developer	Kaiser Permanente	iClassPro Inc

In-app purchases

None

GEMS Study

No in-app purchases

None

GT Gymnastics

No in-app purchases

Questions

Is GEMS Study free?

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

Is GT Gymnastics free?

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

Do GEMS Study or GT Gymnastics have ads?

Neither GEMS Study nor GT Gymnastics shows ads.

Which is updated more often, GEMS Study or GT Gymnastics?

GEMS Study ships an update every 2 months, and GT Gymnastics every 6 weeks. Most recently, GEMS Study was updated on November 10, 2026 and GT Gymnastics on November 9, 2026.