# Cal Platform vs TAU

The clearest difference is update cadence: Cal Platform at every 3 weeks against TAU's every 26 months. TAU's advantage is iOS requirement (13.0 vs 15.0). 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.

Cal Platform ships an update every 3 weeks, TAU every 26 months. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Cal Platform | TAU |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.0 (1 ratings)](https://appshunter.io/ios/app/tau-bog-2023/id1670294435/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 26 months |
| Monetization | — | Free |
| Size | 81 MB | 28 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Israel Credit Cards ltd](https://appshunter.io/developer/586226161) | [Guy Walder](https://appshunter.io/developer/1670294437) |

## What reviewers say

### Cal Platform

[App page](https://appshunter.io/ios/app/cal-platform/id1668769734)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### TAU

[App page](https://appshunter.io/ios/app/tau-bog-2023/id1670294435)

This event app provides registered attendees with easy access to meeting information and registration details. Participants can receive real-time push notifications and updates directly through the application.

**Highlights:** Event information access, Registration management, Real-time push messages, Participant updates, Dedicated event platform

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Cal Platform free?

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

### Is TAU free?

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

### Do Cal Platform or TAU have ads?

Neither Cal Platform nor TAU shows ads.

### Which is updated more often, Cal Platform or TAU?

Cal Platform ships an update every 3 weeks, and TAU every 26 months. Most recently, Cal Platform was updated on November 7, 2026 and TAU on November 3, 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.*