# Terelj UsUy vs Open Teever

Terelj UsUy and Open Teever are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Terelj UsUy ships an update every 2 weeks, Open Teever every 11 days. The most recent releases landed on November 3, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Terelj UsUy | Open Teever |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Size | 93 MB | 52 MB |
| Requires iOS | 15.5 | **15** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Battuvshin Bayarsaikhan](https://appshunter.io/developer/1665782567) | [TanuSoft LLC](https://appshunter.io/developer/1639336180) |

## What reviewers say

### Terelj UsUy

[App page](https://appshunter.io/ios/app/terelj-usuy/id6452471379)

**Features:** macOS Compatibility

**In-app purchases:** none


### Open Teever

[App page](https://appshunter.io/ios/app/open-teever/id6794206874)

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

**In-app purchases:** none


## Frequently asked questions

### Is Terelj UsUy free?

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

### Is Open Teever free?

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

### Do Terelj UsUy or Open Teever have ads?

Neither Terelj UsUy nor Open Teever shows ads.

### Which is updated more often, Terelj UsUy or Open Teever?

Terelj UsUy ships an update every 2 weeks, and Open Teever every 11 days. Most recently, Terelj UsUy was updated on November 3, 2026 and Open Teever on November 6, 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.*