# protostar vs TTCApp by TTCA

The clearest difference is in-app purchases: TTCApp by TTCA at none against protostar's 1. TTCApp by TTCA also leads on ads (none vs shown) and update cadence (every 5 days vs every 3 weeks). protostar's advantage is iOS requirement (10 vs 17.6). On price and device support there is nothing between them.

Both are free to download. protostar sells 1 one-off in-app purchase. TTCApp by TTCA asks for nothing beyond the download.

protostar ships an update every 3 weeks, TTCApp by TTCA every 5 days. The most recent releases landed on November 3, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | protostar | TTCApp by TTCA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/protostar/id1504821938/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 155 MB | 15 MB |
| Requires iOS | **10** | 17.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Longzhe Education Technology (Shanghai) Co., Ltd.](https://appshunter.io/developer/1504821937) | [Yuk Man Ng](https://appshunter.io/developer/1882958112) |

## What reviewers say

### protostar

[App page](https://appshunter.io/ios/app/protostar/id1504821938)

This educational app is designed for students aged 7-12, offering a platform for watching learning videos and playing interactive games. It is exclusively for users of the protostar education company and is available on iPad.

**Highlights:** Learning videos, Educational games, Preview content, Review content, Designed for ages 7-12

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protostar English Course | $299.99 | one-time |


### TTCApp by TTCA

[App page](https://appshunter.io/ios/app/ttcapp-by-ttca/id6761507305)

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

**In-app purchases:** none


## Frequently asked questions

### Is protostar free?

protostar is free to download, with in-app purchases available.

### Is TTCApp by TTCA free?

TTCApp by TTCA is free to download, with no in-app purchases.

### Do protostar or TTCApp by TTCA have ads?

protostar shows ads; TTCApp by TTCA does not.

### Which is updated more often, protostar or TTCApp by TTCA?

protostar ships an update every 3 weeks, and TTCApp by TTCA every 5 days. Most recently, protostar was updated on November 3, 2026 and TTCApp by TTCA on November 13, 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.*