# Training Zone SSI vs Pi

The clearest difference is update cadence: Pi at every 9 days against Training Zone SSI's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Training Zone SSI ships an update every 3 weeks, Pi every 9 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Training Zone SSI | Pi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/training-zone-ssi/id6751212640/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 9 days** |
| Monetization | Ad-supported | — |
| Size | 94 MB | 102 MB |
| Requires iOS | 15 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Training Zone Inc](https://appshunter.io/developer/1600481504) | [SOTO KENJI](https://appshunter.io/developer/1875543614) |

## What reviewers say

### Training Zone SSI

[App page](https://appshunter.io/ios/app/training-zone-ssi/id6751212640)

Manage your gym membership, book classes, and sign up for events. Update your profile information and payment details easily. Stay connected with your fitness community.

**Highlights:** Class reservation, Event sign-up, Account management, Profile updates, Payment information management

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Pi

[App page](https://appshunter.io/ios/app/pi-ho/id6758888376)

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

**In-app purchases:** none


## Frequently asked questions

### Is Training Zone SSI free?

Training Zone SSI is free to download, with no in-app purchases.

### Is Pi free?

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

### Do Training Zone SSI or Pi have ads?

Both Training Zone SSI and Pi show ads.

### Which is updated more often, Training Zone SSI or Pi?

Training Zone SSI ships an update every 3 weeks, and Pi every 9 days. Most recently, Training Zone SSI was updated on October 30, 2026 and Pi on October 31, 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.*