Comparison

Harmony Gymnastics vs IronStack

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

Head to head
About

Harmony Gymnastics

Features
Read full description

Harmony Gymnastics, the all-in-one app that will allow you to easily discover fitness around you. Our app lets you connect with our gym, view timetables and services, book classes and appointments, and securely make payments. -Search and find classes that interest you. -Manage your bookings and subscriptions easily and on the go. -Easily find your favorite classes and book them again. -Track your progress. -Don’t miss a good deal or promotion. -Share your finds with your friends and family. -Manage your family subscriptions. -All with just a few clicks! No more excuses, Harmony Gymnastics and take control of your health and wellness.

About

IronStack

Log your gym workouts quickly and efficiently with this streamlined strength training app. Track progress, set personal records, and customize exercises without unnecessary clutter or account creation. Offers optional Pro features for advanced insights and AI-generated workouts.

Highlights
  • Fast workout logging
  • Automatic PR detection
  • Built-in rest timer
  • Customizable exercises
  • Apple Watch integration
  • Workout history search
  • Optional AI workout generation
Features
Read full description

A simpler way to log your workouts and see your progress. If you currently track your lifts in a notebook, Notes, or a spreadsheet, IronStack gives you the same straightforward experience—with less effort and better progress tracking. No account. No clutter. Just open your workout, log your sets, and keep training. Your workout data stays on your device. There are no required sign-ups, social feeds, or unnecessary distractions. SIMPLE WORKOUT LOGGING · Log weight, reps, or duration in seconds · Use quick +/- controls to make adjustments · See what you lifted last time beside every set · Automatically generate warm-up sets · Use the built-in rest timer · Add notes to workouts and exercises SEE YOUR PROGRESS IronStack turns your workout history into useful progress tracking—without requiring you to manage a complicated spreadsheet. · Automatically detect personal records · Track training volume over time · View estimated one-rep maxes and progress trends · Search your complete workout history · Share PRs with clean visual cards TRAIN YOUR WAY · Create your own exercises · Track exercises by reps or duration · Filter exercises by muscle group, equipment, or category · Access video demonstrations · Organize workouts into folders · Duplicate and customize workout routines APPLE WATCH INTEGRATION Log sets from your wrist while you train. Sync workouts with your Apple Watch in real time, track heart rate and calories, and spend less time reaching for your phone. IRONSTACK PRO Unlock additional training tools with one lifetime purchase—no subscription required. · AI workout generation based on your goals · Post-workout insights and next-session suggestions · Advanced trends, charts, and training targets · Visual plate calculator · Unlimited workouts Whether you follow a detailed program or simply want to record what you lifted today, IronStack keeps workout tracking fast, organized, and out of your way. Less app. More training. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Harmony Gymnastics4 screens
IronStack4 screens

Verdict

The call

The clearest difference is in-app purchases: Harmony Gymnastics at none against IronStack's 3. Harmony Gymnastics also leads on iOS requirement (14.0 vs 16.4). IronStack's advantage is update cadence (every 4 days vs every 2 months). On price, ads 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. IronStack sells 3 in-app purchases, starting at $2.99 per month. Harmony Gymnastics asks for nothing beyond the download.

UpkeepUpdate frequency

Harmony Gymnastics ships an update every 2 months, IronStack every 4 days. Both last shipped on September 30, 2026.

Scorecard3 real differences · 7 level
Harmony Gymnastics versus IronStack: the parameters behind the verdict, then further details
ParameterHarmony GymnasticsIronStack
PriceFreeFree
Rating—4.8 (6 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—6 — better
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPodiPhone, Apple Watch
Requires iOS14.0 — better16.4
Further details — not scored
Size69 MB59 MB
Age rating4+4+
DeveloperConnect for sports marketing LLC.ZanaWorks LLC

In-app purchases

None

Harmony Gymnastics

No in-app purchases

3 purchases

IronStack

Subscriptions2
  • Pro Monthly$2.991 Month
  • Pro Yearly$19.991 Year
One-time1
  • IronStack Lifetime Unlock$39.99

Questions

Is Harmony Gymnastics free?
Harmony Gymnastics is free to download, with no in-app purchases.
Is IronStack free?
IronStack is free to download, with in-app purchases available.
Do Harmony Gymnastics or IronStack have ads?
Neither Harmony Gymnastics nor IronStack shows ads.
Which is updated more often, Harmony Gymnastics or IronStack?
Harmony Gymnastics ships an update every 2 months, and IronStack every 4 days. Most recently, Harmony Gymnastics was updated on September 30, 2026 and IronStack on September 30, 2026.

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