Marketing OS vs Studio Sollo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Marketing OS
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The Million Dollar Creator app empowers you to learn how to become a million dollar creator yourself. You will get full access to the Million Dollar Creator podcast and database. INFORMATION ABOUT THE APP By signing up, you will get access to subscription(s) that include features such as progress tracking, and offline sync, available to subscribe free of charge. The download of Marketing OS is free of charge. Read our full Terms of Service and our Privacy Policy: https://passion.io/terms-of-service https://passion.io/privacy-policy
Studio Sollo
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Studio Sollo is a tech-led studio, making reformer Pilates more accessible. With a variety of class types, a packed timetable and options for both beginners and those with more experience, you’ll find a workout to suit your budget, schedule and experience level. Download the Studio Sollo app to explore our classes, book individual sessions, sign up for memberships, and manage your schedule.
Screenshots
Verdict
The clearest difference is ads: Studio Sollo at none against Marketing OS's shown. Marketing OS's advantage is device support (3 vs 1). On price, update cadence, in-app purchases and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 8, 2026 and November 5, 2026 respectively.
| Parameter | Marketing OS | Studio Sollo |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 16.4 |
| Further details — not scored | ||
| Size | 90 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Nellie Apple Balunan | Gym Flow Limited |
In-app purchases
Marketing OS
No in-app purchases
Studio Sollo
No in-app purchases
