# Thread Fever vs Blasty Stacks

The clearest difference is update cadence: Blasty Stacks at every 5 days against Thread Fever's every 10 days. Thread Fever's advantage is ratings volume (1K vs 188) and review sentiment (36% vs 28%). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. Thread Fever sells 16 one-off in-app purchases and Blasty Stacks sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Thread Fever against 4.7 for Blasty Stacks. That said, the two scores are not equally well evidenced: Thread Fever has 1K ratings behind it against 188, so its average is the more settled of the two. Written reviews are what separate them: 36% of Thread Fever's written reviews are positive against 28% of Blasty Stacks's.

Thread Fever ships an update every 10 days, Blasty Stacks every 5 days. The most recent releases landed on September 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Thread Fever | Blasty Stacks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (1K ratings)](https://appshunter.io/ios/app/thread-fever/id6739344337/reviews)** | [4.7 (188 ratings)](https://appshunter.io/ios/app/blasty-stacks/id6742739843/reviews) |
| Number of ratings | **1K** | 188 |
| Positive reviews | **36.1% of reviews** | 28.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 days | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 385 MB | 303 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Virtual Projects](https://appshunter.io/developer/1654921012) | [Rollic Games](https://appshunter.io/developer/1452111779) |

## 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 (16)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Travel Deal | $0.99 | one-time |
| 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 |
| Big Coin Pack | $29.99 | one-time |
| Artisan’s Kit | $39.99 | one-time |
| Special Pack | $39.99 | one-time |
| Super Coin Pack | $54.99 | one-time |
| Mega Coin Pack | $99.99 | 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


### Blasty Stacks

[App page](https://appshunter.io/ios/app/blasty-stacks/id6742739843)

Engage in a strategic block-matching puzzle game. Slide colorful blocks to match colors and shapes, triggering satisfying blasts. Plan your moves carefully to clear space and create combos before the board fills up.

**Highlights:** Slide and fit colorful blocks, Match same color and shape, Create satisfying combos, Clear space strategically, Challenging puzzle gameplay

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pack 1 | $1.99 | one-time |
| Fail Offer | $4.99 | one-time |
| Coin Pack 2 | $7.99 | one-time |
| No Ads | $7.99 | one-time |
| Small Bundle | $9.99 | one-time |
| No Ads Bundle | $11.99 | one-time |
| Coin Pack 3 | $14.99 | one-time |
| Medium Bundle | $19.99 | one-time |
| Large Bundle | $29.99 | one-time |
| Coin Pack 5 | $54.99 | one-time |

**What reviewers like**

- 👍 Enjoyable game
- 👍 No ads (initially)
- 👍 No ads (fixed)

**What reviewers complain about**

- 🐛 Unbeatable levels
- 🐛 Repeated puzzles
- 🐛 No hints/boosts
- 🐛 Ads returned
- 🐛 In-app purchases

**Reported bugs**

- Level 256 impossible
- Level 134 impossible
- Level 270 bug
- Level 439 impossible
- Level 378 no solution

**Requested features**

- Fix unbeatable levels
- Add hints or boosts
- Stop repeating puzzles


## Frequently asked questions

### Is Thread Fever free?

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

### Is Blasty Stacks free?

Blasty Stacks is free to download, with in-app purchases available.

### Which has better reviews, Thread Fever or Blasty Stacks?

Thread Fever is rated higher. Thread Fever averages 4.8 out of 5 from 1K ratings, while Blasty Stacks averages 4.7 from 188 ratings.

### Do Thread Fever or Blasty Stacks have ads?

Both Thread Fever and Blasty Stacks show ads.

### Which is updated more often, Thread Fever or Blasty Stacks?

Thread Fever ships an update every 10 days, and Blasty Stacks every 5 days. Most recently, Thread Fever was updated on September 23, 2026 and Blasty Stacks on September 18, 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.*