THE I/O vs Apolo Stark
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
THE I/O
Book challenging and surprising group fitness classes. Manage your personal details and access contact information easily. Discover more features and expect the unexpected.
- Book group fitness classes
- Manage personal details
- Access contact information
- Discover new features
- Challenging workouts
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Experience THE I/O anytime, anywhere with our app. Book group classes designed to challenge you, move you, and surprise you; manage your personal details or easily access our contact information. And this is just the beginning… there’s so much more to discover! Expect The Unexpected - THE I/O
Apolo Stark
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Todas las actividades, clases y servicios a tu disposición, para cumplir tus objetivos y que te diviertas mientras te cuidas. Nosotros te ayudamos a conseguirlo, apoyándote, motivándote y facilitándote las más modernas instalaciones, con un amplio horario para que el tiempo no sea excusa. Con nuestra App, podrás ver en todo momento las clases disponibles, reservar y anular tu asistencia, consultar el aforo, recargar tu bono… todo desde la comodidad de tu casa, solo con tu móvil. Además, si lo prefieres, podrás tener acceso a nuestro módulo de entrenamiento desarrollado por profesionales altamente cualificados y personalizado para ti según tu condición física y objetivos. No lo dudes, si te lo propones, nosotros te ayudamos a conseguirlo. Descarga nuestra app, y únete a nuestro equipo.
Screenshots
Verdict
THE I/O and Apolo Stark are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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.
THE I/O ships an update every 4 months, Apolo Stark every 6 months. The most recent releases landed on October 20, 2026 and October 3, 2026 respectively.
| Parameter | THE I/O | Apolo Stark |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (13 ratings) — better | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 4 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0.0 |
| Further details — not scored | ||
| Size | 195 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | The IO | Apolo Stark Marbella 2016 SL |
In-app purchases
THE I/O
No in-app purchases
Apolo Stark
No in-app purchases
Questions
Is THE I/O free?
Is Apolo Stark free?
Do THE I/O or Apolo Stark have ads?
Which is updated more often, THE I/O or Apolo Stark?
Other comparisons
