# CO Teacher vs DotB SEA

The clearest difference is iOS requirement: DotB SEA at 13.0 against CO Teacher's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

CO Teacher ships an update every 8 days, DotB SEA fortnightly. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CO Teacher | DotB SEA |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Monetization | — | Free |
| Size | 45 MB | 82 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ONLINE MANAGEMENT TRAINING JOINT STOCK COMPANY](https://appshunter.io/developer/1054301745) | [DOTB SOFTWARE COMPANY LIMITED](https://appshunter.io/developer/1475488444) |

## What reviewers say

### CO Teacher

[App page](https://appshunter.io/ios/app/co-teacher/id1347507050)

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

**In-app purchases:** none


### DotB SEA

[App page](https://appshunter.io/ios/app/dotb-sea/id1475488445)

This app connects parents, students, and language/skill training centers. It offers features for managing learning, tracking progress, and communicating with centers. Teachers can also manage schedules and student attendance.

**Highlights:** Personal information management, Class schedule tracking, Electronic report card monitoring, Feedback and chat with customer support, Tuition fee lookup, Scorecard viewing, Teacher attendance and student profile access

**In-app purchases:** none


## Frequently asked questions

### Is CO Teacher free?

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

### Is DotB SEA free?

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

### Do CO Teacher or DotB SEA have ads?

Neither CO Teacher nor DotB SEA shows ads.

### Which is updated more often, CO Teacher or DotB SEA?

CO Teacher ships an update every 8 days, and DotB SEA fortnightly. Most recently, CO Teacher was updated on November 6, 2026 and DotB SEA 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.*