# TTParent BSB vs ONE15 Marina

The clearest difference is iOS requirement: ONE15 Marina at 13.0 against TTParent BSB's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.

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 October 29, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | TTParent BSB | ONE15 Marina |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/one15-marina/id1554470561/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 35 MB | 32 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Overdrive IoT Pte Ltd](https://appshunter.io/developer/1506535988) | [SUTL MARINA DEVELOPMENT PTE. LTD](https://appshunter.io/developer/1554470563) |

## What reviewers say

### TTParent BSB

[App page](https://appshunter.io/ios/app/ttparent-bsb/id1546418097)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ONE15 Marina

[App page](https://appshunter.io/ios/app/one15-marina/id1554470561)

Manage your membership details, book facilities, and access your e-membership card. Request introduction letters to affiliate clubs and check e-vouchers. This app simplifies access to club services for members.

**Highlights:** Manage membership details, Book club facilities, Check e-vouchers, Request introduction letters, Access e-membership card

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is TTParent BSB free?

TTParent BSB is free to download, with no in-app purchases.

### Is ONE15 Marina free?

ONE15 Marina is free to download, with no in-app purchases.

### Do TTParent BSB or ONE15 Marina have ads?

Neither TTParent BSB nor ONE15 Marina shows ads.

### Which is updated more often, TTParent BSB or ONE15 Marina?

TTParent BSB ships an update every 2 months, and ONE15 Marina every 2 months. Most recently, TTParent BSB was updated on October 29, 2026 and ONE15 Marina on October 21, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*