# Block Tower Online vs Tether Up!

The clearest difference is review sentiment: Block Tower Online at 64% against Tether Up!'s 27%. Block Tower Online also leads on ads (none vs shown) and monetization model (free vs free with in-app purchases). Tether Up!'s advantage is update cadence (every 3 days vs every 5 weeks). 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.

Block Tower Online ships an update every 5 weeks, Tether Up! every 3 days. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Block Tower Online | Tether Up! |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **63.6% of reviews** | 27.3% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 212 MB | 32 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Char Room](https://appshunter.io/developer/522034817) | [IBUKI YOSHIDA](https://appshunter.io/developer/1856209051) |

## What reviewers say

### Block Tower Online

[App page](https://appshunter.io/ios/app/block-tower-online/id1527697536)

A simple balance game where players take turns removing blocks without toppling the character on top. Compete with friends online or against AI opponents.

**Highlights:** Online multiplayer with friends, AI opponent for practice, Simple block removal gameplay, Character and block customization, Rating system for competitive play

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

**In-app purchases:** none


### Tether Up!

[App page](https://appshunter.io/ios/app/tether-up/id6814103261)

This cooperative climbing action game connects two players with a single rope as they ascend endlessly. Master the tension and timing of the rope to reach new heights, with no checkpoints or defined goals. Fall and retry as many times as needed, with the sky changing color to mark your progress.

**Highlights:** Cooperative climbing gameplay, Rope mechanics for movement and interaction, Endless ascent with changing environments, Retry system after falling, Online and local multiplayer, Variety of environmental puzzles and hazards

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

**In-app purchases:** none


## Frequently asked questions

### Is Block Tower Online free?

Block Tower Online is free to download, with no in-app purchases.

### Is Tether Up! free?

Tether Up! is free to download, with no in-app purchases.

### Do Block Tower Online or Tether Up! have ads?

Tether Up! shows ads; Block Tower Online does not.

### Which is updated more often, Block Tower Online or Tether Up!?

Block Tower Online ships an update every 5 weeks, and Tether Up! every 3 days. Most recently, Block Tower Online was updated on October 15, 2026 and Tether Up! on October 8, 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.*