Comparison

J vs Trunk

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

Head to head
About

J

This app provides tools to structure your juggling practice sessions, including warm-up, practice, and cool-down routines. It features interval training for customized workouts and a talking timer for endurance practice, offering verbal feedback without needing to check your stopwatch.

Highlights
  • Structured practice routines (warm-up, practice, cool-down)
  • Customizable interval training workouts
  • Talking timer for endurance practice
  • Verbal feedback for endurance contests
  • Ad-free experience
Features
Read full description

Enhance your juggling practice! The J-Trainer app will give you tools to ensure that your juggling practice sessions include proper warmup, practice, and cool down. The interval training portion of the J-Trainer tool allows you to build customized workouts to ensure you spend the right amount of practice time on each section of your practice. Most juggling festivals include endurance contests like: club balance endurance, 5 ball endurance, 5 club endurance, and quarter juggling endurance. The Talking Timer feature of the J-trainer gives you verbal feedback on your endurance, so you don't have to look down at your stop watch. ---------------------------- No advertisements and no in app purchases are contained in this app. ---------------------------- Other apps by this developer: Protect TD (Protect Tower Defense - Save the Animals) Math Tower Defense Eagle Mandarin Mandarin Prof Math Town Spelling Ace Spy Town Spanish Prof ---------------------------- I hope you enjoy this app. Feel free to send me feedback if you have suggestions for future updates.

About

Trunk

This app helps you track your gym workouts and progress with an intuitive interface. It offers AI integration for personalized training plans and detailed analytics, all without any subscriptions.

Highlights
  • Workout logging
  • AI training plan integration
  • Progress visualization
  • Rest timer with notifications
  • Offline functionality
  • Customizable workout organization
  • Unlimited profiles and sessions
Features
Read full description

Trunk helps you log your lifting and review your progress. TRACK YOUR LIFTS Record sets, reps and weight. Organize your training with profiles, sessions and exercises. SEE YOUR PROGRESS Review your workout history, compare exercise performance over time, and track progress toward your goals. KEEP YOUR WORKOUT MOVING Set custom rest timers and use Trunk's Lock Screen workout controls. CONNECT YOUR OWN AI Already use an AI assistant like ChatGPT or Claude? Link it with Trunk and import the programs it builds for you in two taps. Anything you share with your AI is between you and your AI provider. AI integration requires Trunk+ (in-app purchase). Questions or feedback? Use the support link on this product page.

Screenshots

J4 screens
Trunk4 screens

Verdict

The call

The clearest difference is in-app purchases: J at none against Trunk's 1. J also leads on ratings volume (4 vs 1) and iOS requirement (12.2 vs 26.2). On price, rating, update cadence and ads 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. Trunk sells 1 one-off in-app purchase. J asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for J against 5.0 for Trunk. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

J ships an update monthly, Trunk every 2 weeks. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
J versus Trunk: the parameters behind the verdict, then further details
ParameterJTrunk
PriceFreeFree
Rating5.0 (4 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings4 — better1
Update frequencyMonthlyEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.2 — better26.2
Further details — not scored
Size19 MB6 MB
Age rating4+4+
DeveloperHeather MarriottAdventureland, Inc

Customer experience

J

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Trunk

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

J

No in-app purchases

1 purchases

Trunk

One-time1
  • Trunk+$9.99

Questions

Is J free?
J is free to download, with no in-app purchases.
Is Trunk free?
Trunk is free to download, with in-app purchases available.
Which has better reviews, J or Trunk?
J and Trunk are both rated 5.0 out of 5 on the App Store, from 4 and 1 ratings respectively.
Do J or Trunk have ads?
Neither J nor Trunk shows ads.
Which is updated more often, J or Trunk?
J ships an update monthly, and Trunk every 2 weeks. Most recently, J was updated on October 10, 2026 and Trunk on October 25, 2026.

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