# Crystal Siege vs Rush Defense

The clearest difference is review sentiment: Crystal Siege at 92% against Rush Defense's 18%. Crystal Siege also leads on ads (none vs shown) and iOS requirement (6.0 vs 12.0). Rush Defense's advantage is update cadence (fortnightly vs every 5 months) and rating (4.9 vs 4.6). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Crystal Siege sells 7 one-off in-app purchases and Rush Defense sells 30 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Rush Defense holds the better App Store score, 4.9 against 4.6. That said, the two scores are not equally well evidenced: Rush Defense has 509 ratings behind it against 73, so its average is the more settled of the two. Written reviews complicate that: 92% of Crystal Siege's written reviews are positive against 18% of Rush Defense's, so the app with the better star average is not the one people write more warmly about.

Crystal Siege ships an update every 5 months, Rush Defense fortnightly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Crystal Siege | Rush Defense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (73 ratings)](https://appshunter.io/ios/app/crystal-siege/id521069210/reviews) | **[4.9 (509 ratings)](https://appshunter.io/ios/app/rush-defense-idle-td/id6474822680/reviews)** |
| Number of ratings | 73 | **509** |
| Positive reviews | **92.2% of reviews** | 18.4% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 324 MB | 445 MB |
| Requires iOS | **6.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [FDG Entertainment GmbH & Co.KG](https://appshunter.io/developer/669512574) | [HONG KONG BASIC TECHNOLOGY LIMITED](https://appshunter.io/developer/1624254775) |

## What reviewers say

### Crystal Siege

[App page](https://appshunter.io/ios/app/crystal-siege/id521069210)

This game combines tower defense with RPG elements, allowing players to actively control a hero or support towers with spells. Unique map events and epic loot add depth to strategic combat against monster hordes.

**Highlights:** Active combat with hero control, Summon defensive towers, Support towers with spells, Unique map events and environmental interaction, Collect epic loot and equipment, Elemental spell mastery, Epic boss battles

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pile of Gold | $0.99 | one-time |
| Starter Pack | $1.99 | one-time |
| Bag of Gold | $2.99 | one-time |
| Warriors Anger Set | $2.99 | one-time |
| Heroes Faith Set | $3.99 | one-time |
| Emperors Relieve Set | $4.99 | one-time |
| Chest of Gold | $5.99 | one-time |

**What reviewers like**

- 👍 Fun gameplay
- 💡 Blend of TD and RPG elements
- 💰 Good value, not pay-to-win
- ✨ Engaging and addictive
- 🎮 Strategic depth

**What reviewers complain about**

- ⏳ Game is too short
- 🤔 Some aspects confusing
- 🐌 Can be a grind
- 🗺️ Lack of maps/missions
- 📈 Outdated/not updated recently

**Reported bugs**

- Game keeps freezing
- Save file corrupted after crashing
- Game stopped working mid-play

**Requested features**

- More maps/missions
- Better in-game store equipment
- Game updates


### Rush Defense

[App page](https://appshunter.io/ios/app/rush-defense-idle-td/id6474822680)

Defend mystical realms from monstrous adversaries in this idle tower defense game. Strategically place towers, unleash spells, and upgrade your defenses to fend off relentless enemy waves. Progress and strengthen your defenses even while offline.

**Highlights:** Unique tower defense gameplay, Strategic tower placement, Powerful spell unleashing, Idle progression system, Offline defense strengthening, Tower and ability upgrades

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

**In-app purchases (30)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gift Pack 1 | $0.99 | one-time |
| First Recharge Pack | $0.99 | one-time |
| limit mastery | $1.99 | one-time |
| Festival 1 | $1.99 | one-time |
| Basic Supply 1.99 | $1.99 | one-time |
| limit crystal | $1.99 | one-time |
| limit diamonds | $1.99 | one-time |
| limit energy | $1.99 | one-time |
| Gems package 1 | $4.99 | one-time |
| Rank Boost Pack Crystals Basic | $4.99 | one-time |
| Festival 2 | $4.99 | one-time |
| Diamonds ×100 | $4.99 | one-time |
| Rank Boost Pack Diamonds basic | $4.99 | one-time |
| Basic Crystal Piggy Bank | $7.99 | one-time |
| Gold Bank (Skin Fragments)1 | $7.99 | one-time |
| Basic Diamond Piggy Bank | $7.99 | one-time |
| Rank Boost Pack Diamonds | $9.99 | one-time |
| Equipment event 2 | $9.99 | one-time |
| Crystal Stone Pack 1 | $9.99 | one-time |
| Adv. Pass 5 | $9.99 | one-time |
| mediate Diamond Piggy Bank | $9.99 | one-time |
| Adv. Pass 1 | $9.99 | one-time |
| Monthly Card | $9.99 | one-time |
| Novice Pack | $9.99 | one-time |
| Ad-Free | $9.99 | one-time |
| Medal Pack | $14.99 | one-time |
| loong Skin | $19.99 | one-time |
| Advanced Pack | $29.99 | one-time |
| Crystal Stone Pack 2 | $49.99 | one-time |
| Rank Boost Pack Diamond Deluxe | $99.99 | one-time |

**What reviewers like**

- 🎮 Engaging tower defense gameplay mechanics
- 🔄 Regular game updates and new content additions
- 💰 Reasonable pricing for ad-skip pack
- 👥 Guild system adds social elements
- ⚡ Responsive developer compensation for issues

**What reviewers complain about**

- 💸 Extremely pay-to-win mechanics
- 🐢 Excessively slow progression and grinding
- 📺 Intrusive and excessive advertisements
- 🔗 Ads with no close button or skip option
- 💳 Billing discrepancies and failed purchases

**Reported bugs**

- Ads that cannot be closed or skipped
- Ads redirecting to external websites without exit option
- Game crashes after watching advertisements
- Server connection failures and offline status errors
- Purchased items and ad-skip packs not being delivered

**Requested features**

- Notifications for lab research completion
- Permanent speed increase rewards for watching ads
- Stackable ad-watch bonuses
- Game pause functionality
- Extended gold collection intervals (24 hours instead of 2)


## Frequently asked questions

### Is Crystal Siege free?

Crystal Siege is free to download, with in-app purchases available.

### Is Rush Defense free?

Rush Defense is free to download, with in-app purchases available.

### Which has better reviews, Crystal Siege or Rush Defense?

Rush Defense is rated higher. Crystal Siege averages 4.6 out of 5 from 73 ratings, while Rush Defense averages 4.9 from 509 ratings.

### Do Crystal Siege or Rush Defense have ads?

Rush Defense shows ads; Crystal Siege does not.

### Which is updated more often, Crystal Siege or Rush Defense?

Crystal Siege ships an update every 5 months, and Rush Defense fortnightly. Most recently, Crystal Siege was updated on October 21, 2026 and Rush Defense on October 24, 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.*