# Junk Jack vs Siralim Ultimate

The clearest difference is in-app purchases: Siralim Ultimate at none against Junk Jack's 11. Siralim Ultimate also leads on update cadence (weekly vs every 3 months) and rating (4.7 vs 4.4). Junk Jack's advantage is price ($4.99 vs $9.99) and iOS requirement (9.0 vs 13.0). On review sentiment, ratings volume, ads and monetization model there is nothing between them.

Junk Jack costs $4.99 and Siralim Ultimate $9.99 up front. Junk Jack sells 11 one-off in-app purchases. Siralim Ultimate asks for nothing beyond the download.

Siralim Ultimate holds the better App Store score, 4.7 against 4.4. Both are backed by a comparable volume of ratings — 472 and 240 respectively. Written reviews complicate that: 78% of Junk Jack's written reviews are positive against 74% of Siralim Ultimate's, so the app with the better star average is not the one people write more warmly about.

Junk Jack ships an update every 3 months, Siralim Ultimate weekly. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Junk Jack | Siralim Ultimate |
| --- | --- | --- |
| Price | **$4.99** | $9.99 |
| Rating | [4.4 (472 ratings)](https://appshunter.io/ios/app/junk-jack/id601584735/reviews) | **[4.7 (240 ratings)](https://appshunter.io/ios/app/siralim-ultimate/id1601114348/reviews)** |
| Number of ratings | **472** | 240 |
| Positive reviews | **77.9% of reviews** | 73.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#37** |
| Size | 67 MB | 1.0 GB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Pixbits SRL](https://appshunter.io/developer/436555493) | [Thylacine Studios](https://appshunter.io/developer/889776566) |

## What reviewers say

### Junk Jack

[App page](https://appshunter.io/ios/app/junk-jack/id601584735)

Explore, build, and survive in procedurally generated 2D worlds. This sandbox adventure offers creative building, combat, and exploration across multiple planets, with options for both single-player and multiplayer experiences.

**Highlights:** Procedurally generated worlds, Multiplayer support, Creative mode, Extensive equipment system, Adventure mode across multiple planets, Electronics engine for complex creations, Farming system

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Breeding Hat | $0.99 | one-time |
| Extended Day | $0.99 | one-time |
| Complete Craftbook | $0.99 | one-time |
| Dark Ninja | $0.99 | one-time |
| Mining Helmet | $0.99 | one-time |
| Hatcher Hat | $0.99 | one-time |
| Santa Hat | $0.99 | one-time |
| Chemistry Book | $0.99 | one-time |
| Pocket Pug | $0.99 | one-time |
| Legendary Pole | $0.99 | one-time |
| Instant Planets | $1.99 | one-time |

**What reviewers like**

- 🚀 Awesome game
- 🚀 Great sandbox experience
- 🚀 Tons of content
- 🚀 Nostalgic
- 🚀 Addictive gameplay

**What reviewers complain about**

- 🐛 Crashes and glitches
- 🐛 Multiplayer issues
- 🐛 Inventory/crafting bugs
- 🔋 Performance issues on older devices
- 🔒 Lack of cloud/cross-device save support

**Reported bugs**

- Crashes when joining multiplayer
- Inventory items disappearing
- Crafting recipes not working
- Compatibility issues with newer iOS versions
- Multiplayer desync and desyncing

**Requested features**

- Controller support
- More planets/biomes
- NPC/civilization features
- Expanded crafting/progression
- Taming/breeding mechanics


### Siralim Ultimate

[App page](https://appshunter.io/ios/app/siralim-ultimate/id1601114348)

**Currently charting:** #37 Top Paid · Role Playing, #72 Top Paid · Adventure (US App Store)

Embark on an epic monster-catching adventure in this deep RPG. Collect over 1200 unique creatures, fuse them to create powerful offspring, and explore procedurally generated dungeons. Customize your castle, engage in strategic battles, and craft powerful gear for thousands of hours of gameplay.

**Highlights:** 1200+ creatures to collect, Creature fusion system, Randomly generated dungeons, Castle customization, Strategic 6v6 battles, Artifact and Spell Gem crafting, Character specialization

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

**In-app purchases:** none

**What reviewers like**

- 🎮 Exceptional depth and complexity in gameplay mechanics
- 💰 Complete game with zero microtransactions
- 🔄 Virtually unlimited replayability and content
- 🧩 Incredible customization options for teams and builds
- ⏱️ Hundreds of hours of engaging content

**What reviewers complain about**

- 🎮 Virtual controller controls feel unnatural and imprecise
- 🐛 Frequent crashes and stability issues on iOS
- 📱 Touch controls block important UI text
- ⌨️ Keyboard input detection problems
- 🎨 Outdated UI design resembling early 2000s apps

**Reported bugs**

- Game freezes on opening screen preventing gameplay
- Crashes when defeating False Gods and selecting anointments
- Crashes when gaining large amounts of experience
- Crashes when switching to different apps during battle
- Crashes when opening chests after boss battles

**Requested features**

- Native touch controls with tap-to-move functionality
- Controller support for external game controllers
- Automatic cloud backup system
- Portrait mode and one-handed play support
- Individual button size adjustment (not grouped)


## Frequently asked questions

### Is Junk Jack free?

Junk Jack costs $4.99, and also offers in-app purchases.

### Is Siralim Ultimate free?

Siralim Ultimate costs $9.99, with no in-app purchases.

### Which has better reviews, Junk Jack or Siralim Ultimate?

Siralim Ultimate is rated higher. Junk Jack averages 4.4 out of 5 from 472 ratings, while Siralim Ultimate averages 4.7 from 240 ratings.

### Do Junk Jack or Siralim Ultimate have ads?

Neither Junk Jack nor Siralim Ultimate shows ads.

### Which is updated more often, Junk Jack or Siralim Ultimate?

Junk Jack ships an update every 3 months, and Siralim Ultimate weekly. Most recently, Junk Jack was updated on October 26, 2026 and Siralim Ultimate on October 27, 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.*