# tei vs プロストック

The clearest difference is update cadence: プロストック at every 7 months against tei's every 29 months. tei's advantage is iOS requirement (8.0 vs 12.0). 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.

tei ships an update every 29 months, プロストック every 7 months. The most recent releases landed on September 9, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | tei | プロストック |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 29 months | **Every 7 months** |
| Size | 3 MB | 93 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [shingo kamei](https://appshunter.io/developer/1256845824) | [KOIZUMI Co.,LTD.](https://appshunter.io/developer/1687046161) |

## What reviewers say

### tei

[App page](https://appshunter.io/ios/app/tei/id1566538983)

**In-app purchases:** none


### プロストック

[App page](https://appshunter.io/ios/app/id6470243222)

**In-app purchases:** none


## Frequently asked questions

### Is tei free?

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

### Is プロストック free?

プロストック is free to download, with no in-app purchases.

### Do tei or プロストック have ads?

Neither tei nor プロストック shows ads.

### Which is updated more often, tei or プロストック?

tei ships an update every 29 months, and プロストック every 7 months. Most recently, tei was updated on September 9, 2026 and プロストック on September 11, 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.*