R3FORM vs ISO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
R3FORM
Manage your fitness account, book classes, and stay connected with the studio. Easily message instructors, view announcements, and access shared content. This app simplifies your fitness journey and communication.
- Account management
- Class and event booking
- Direct messaging
- Public feed for announcements
- Content sharing
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The R3FORM app makes it very easy for you to manage your R3FORM account, book into our classes and events and keep in touch with us. You can easily message us if you have a question or want to share something with them. You can also follow our public feed to see any announcements we make, promos we run, or content we share.
ISO
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WHAT YOUR MUSIC SAYS ABOUT YOU ISO-1 is a music-first app that helps you understand the patterns in how you listen. The way you use music when you are overwhelmed, distracted, calm, in your feelings, or trying to focus is not random. ISO-1 helps you see those patterns more clearly, so you can understand what certain tracks, playlists, and listening habits are doing for you over time. WHAT YOU CAN DO WITH ISO-1 - Connect your music streaming service. Spotify is currently supported, with Apple Music coming soon. - See patterns in how your listening connects to mood, moments, and habits. - Build playlists using music that already works for different emotional states and goals. - Track how certain tracks or listening sessions feel, and build a personal picture over time. - Unlock deeper insights and more structured guidance if you want the full picture. INSIGHT FIRST, PRESSURE LAST ISO-1 is designed to fit around the way people already use music. You do not need to journal constantly or change how you listen overnight. You can start by simply noticing what is already there, then go deeper when it feels useful. BUILT WITH CARE ISO-1 is informed by music psychology, therapeutic listening approaches, and clinical input. It is designed to support reflection and self-understanding through music, not to replace therapy or medical care. Support resources are available if you need them. FREE TO START ISO-1 includes a free experience, with additional paid features for users who want deeper insight, richer pattern tracking, and more structure. Listen how you already listen. See more of what it means. Unlock more when you want to go deeper. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: R3FORM at none against ISO's 3. R3FORM also leads on iOS requirement (15.1 vs 18.1). ISO's advantage is update cadence (every 2 weeks vs every 3 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
Both are free to download. ISO sells 3 in-app purchases, starting at $3.99 per month. R3FORM asks for nothing beyond the download.
R3FORM ships an update every 3 months, ISO every 2 weeks. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.
| Parameter | R3FORM | ISO |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 18.1 |
| Further details — not scored | ||
| Size | 55 MB | 255 MB |
| Age rating | 4+ | 4+ |
| Developer | Momence, Inc. | Isofi Limited |
In-app purchases
R3FORM
No in-app purchases
ISO
- Premium Monthly Subscription$3.991 Month
- Premium Yearly Subscription$34.991 Year
- Unlock 'Listening History Upload'$12.99
