# Thread Fever vs Bus Screw Saga

The clearest difference is in-app purchases: Bus Screw Saga at none against Thread Fever's 10. Bus Screw Saga also leads on ads (none vs shown) and update cadence (every 2 days vs every 11 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Thread Fever sells 10 one-off in-app purchases. Bus Screw Saga asks for nothing beyond the download.

Thread Fever ships an update every 11 days, Bus Screw Saga every 2 days. The most recent releases landed on October 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Thread Fever | Bus Screw Saga |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1.6K ratings)](https://appshunter.io/ios/app/thread-fever/id6739344337/reviews)** | — |
| Number of ratings | **1.6K** | — |
| Positive reviews | 41.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 11 days | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 356 MB | 60 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Virtual Projects](https://appshunter.io/developer/1654921012) | [忠吉 唐](https://appshunter.io/developer/1611343179) |

## What reviewers say

### Thread Fever

[App page](https://appshunter.io/ios/app/thread-fever/id6739344337)

Engage in a relaxing yet challenging puzzle game where you untangle colorful threads and sort them into matching boxes. Progress through levels by completing beautifully stitched designs and testing your strategic thinking.

**Highlights:** Color thread sorting, Knot untangling mechanics, Complete stitched designs, Boosters and power-ups, Weekly new levels, Global leaderboard

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mini Coin Pack | $1.99 | one-time |
| Special Bundle | $2.99 | one-time |
| Piggy Bank | $2.99 | one-time |
| Second Chance Offer | $5.99 | one-time |
| No Ads | $7.99 | one-time |
| Small Coin Pack | $7.99 | one-time |
| Elite Pass | $9.99 | one-time |
| Stitcher’s Bag | $9.99 | one-time |
| Medium Coin Pack | $14.99 | one-time |
| Crafter’s Chest | $19.99 | one-time |

**What reviewers like**

- 😊 Engaging and fun gameplay
- 🎮 Great escape and entertainment value
- 👁️ Strategic preview feature for planning ahead
- 🎨 Enjoyable thread/yarn collection mechanics

**What reviewers complain about**

- 📺 Excessive and long advertisements
- 💰 Aggressive monetization and pay-to-win mechanics
- 🐛 Frequent crashes and freezing issues
- 🔄 Repetitive level design after progression
- ⚠️ Game-breaking bugs blocking progression

**Reported bugs**

- Game crashes at end of levels without awarding rewards
- Freezing and locking up during gameplay
- Level 3 displays extra box preventing progression
- Level 29 yellow threads unclickable
- Level 121 threads cannot be collected

**Requested features**

- More levels beyond current cap (level 174)
- Increased difficulty progression instead of repetition
- Persistent power-ups that carry between levels
- Better reward-to-cost balance for in-game currency
- Ad-free experience that actually works


### Bus Screw Saga

[App page](https://appshunter.io/ios/app/bus-screw-saga/id6739804970)

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

**In-app purchases:** none


## Frequently asked questions

### Is Thread Fever free?

Thread Fever is free to download, with in-app purchases available.

### Is Bus Screw Saga free?

Bus Screw Saga is free to download, with no in-app purchases.

### Do Thread Fever or Bus Screw Saga have ads?

Thread Fever shows ads; Bus Screw Saga does not.

### Which is updated more often, Thread Fever or Bus Screw Saga?

Thread Fever ships an update every 11 days, and Bus Screw Saga every 2 days. Most recently, Thread Fever was updated on October 30, 2026 and Bus Screw Saga on October 1, 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.*