# tcall교원안심번호 vs RIZZ

The clearest difference is review sentiment: RIZZ at 50% against tcall교원안심번호's 0%. RIZZ also leads on update cadence (every 4 days vs fortnightly). tcall교원안심번호's advantage is ads (none vs shown) and monetization model (free vs free with in-app purchases). On price, 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.

tcall교원안심번호 ships an update fortnightly, RIZZ every 4 days. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | tcall교원안심번호 | RIZZ |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 8 MB | 61 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [yang minjong](https://appshunter.io/developer/1554022510) | [wongi lee](https://appshunter.io/developer/6773726520) |

## What reviewers say

### tcall교원안심번호

[App page](https://appshunter.io/ios/app/tcall/id1554022508)

Facilitates communication between teachers and parents/students through posts, comments, SMS, and calls. Requires registration with the "New Teacher Safe Number" service to use.

**Highlights:** Class bulletin board, Send calls/SMS, Push notifications, Post and comment functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### RIZZ

[App page](https://appshunter.io/ios/app/rizz/id6773726098)

Discover who likes you through anonymous voting on school friends. Check your received votes and use collected coins to boost your own votes. An optional subscription offers enhanced features like name reveals and bonus rewards.

**Highlights:** Vote for friends who best fit questions, View received votes, Use coins to boost your votes, Optional subscription for premium features, Report and block users, Anonymous voting

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

**In-app purchases:** none


## Frequently asked questions

### Is tcall교원안심번호 free?

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

### Is RIZZ free?

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

### Do tcall교원안심번호 or RIZZ have ads?

RIZZ shows ads; tcall교원안심번호 does not.

### Which is updated more often, tcall교원안심번호 or RIZZ?

tcall교원안심번호 ships an update fortnightly, and RIZZ every 4 days. Most recently, tcall교원안심번호 was updated on October 14, 2026 and RIZZ on October 16, 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.*