Comparison

G21 vs TrueCoach

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

Head to head
About

G21

Easily plan and schedule your fitness classes directly from your mobile device. View class schedules, sign up for sessions, and access studio location information. Optimize your time and enjoy the convenience of managing your fitness activities on the go.

Highlights
  • View class schedules
  • Sign up for classes
  • Access studio location information
  • Optimize time management
  • Convenient mobile access
Features
Read full description

Download the Gravity 21 App today to plan and schedule your classes! From this mobile App you can view class schedules, sign-up for classes, as well as view the studio’s location information. Optimize your time and maximize the convenience of signing up for classes from your device! Download this App today!

About

TrueCoach

This platform empowers fitness coaches to streamline client management and deliver personalized training. It offers tools for creating custom workouts, tracking progress, and direct client communication, allowing trainers to focus on coaching.

Highlights
  • Custom workout builder
  • Exercise video library
  • Client messaging
  • Workout scheduling and tracking
  • Progress metric monitoring
  • Nutrition logging
Features
Read full description

TrueCoach is the number one platform for coaches and trainers who want to manage more clients with less admin work. Our easy to use workout builder features a 900+ video exercise library, plus the ability to upload your own videos or even migrate them over from YouTube or Instagram directly. We want to help eliminate accountability issues which is why we built a robust internal messaging function so you can connect and engage with all of your clients on one platform. Spend more time doubling down on what you enjoy and that's engaging with clients, tracking and measuring their data, and delivering the highest level coaching experience possible. A TrueCoach account is required. If you are downloading this app, you are a client of a trainer who has chosen to level up and subscribe to the best-personalized coaching app on the market. • Coaches can easily program custom workouts and rest days for their clients • Clients can see their workout schedule, and coaches can track completed and missed workouts • Demo video library to demonstrate proper form, or upload a custom demo video • Clients can message coaches, and leave their own custom photos and videos for analysis • Keep track of key metrics so you can monitor progress • Log your nutrition info Ditch the clunky emails, spreadsheets, and text messages and start getting real results with TrueCoach today.

Screenshots

G213 screens
TrueCoach4 screens

Verdict

The call

The clearest difference is rating: TrueCoach at 4.9 against G21's 3.7. TrueCoach also leads on ads (none vs shown) and ratings volume (36K vs 3). On price, update cadence, in-app purchases and device support 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

TrueCoach holds the better App Store score, 4.9 against 3.7. That said, the two scores are not equally well evidenced: TrueCoach has 36K ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

G21 ships an update monthly, TrueCoach every 3 weeks. The most recent releases landed on October 15, 2026 and October 27, 2026 respectively.

Scorecard4 real differences · 6 level
G21 versus TrueCoach: the parameters behind the verdict, then further details
ParameterG21TrueCoach
PriceFreeFree
Rating3.7 (3 ratings)4.9 (36K ratings) — better
Positive reviews—41.2% of reviews
Number of ratings336K — better
Update frequencyMonthlyEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size152 MB110 MB
Age rating4+12+
DeveloperGravity 21 Fort Lauderdale, LLCTrueCoach, Inc.

Customer experience

G21

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%

TrueCoach

All ratings35,628 ratings
Positive97.0%
Neutral1.4%
Negative1.6%
Written reviews515 reviews
Positive41.2%
Neutral15.9%
Negative42.9%

Bugs and requests

G21

Not enough reviews yet to summarise bugs or requests.

TrueCoach

Reported bugs

4 issues
  • Videos not uploading properly
  • Workout data not saving
  • Frequent app crashes and freezes
  • Scrolling and navigation issues

Requested features

4 requests
  • Integration with Apple Health/Watch
  • Ability to edit/rearrange workouts
  • Better workout tracking and data visualization
  • Improved video upload functionality

In-app purchases

None

G21

No in-app purchases

None

TrueCoach

No in-app purchases

Questions

Is G21 free?
G21 is free to download, with no in-app purchases.
Is TrueCoach free?
TrueCoach is free to download, with no in-app purchases.
Which has better reviews, G21 or TrueCoach?
TrueCoach is rated higher. G21 averages 3.7 out of 5 from 3 ratings, while TrueCoach averages 4.9 from 36K ratings.
Do G21 or TrueCoach have ads?
G21 shows ads; TrueCoach does not.
Which is updated more often, G21 or TrueCoach?
G21 ships an update monthly, and TrueCoach every 3 weeks. Most recently, G21 was updated on October 15, 2026 and TrueCoach on October 27, 2026.

Other comparisons