# Plague Inc. vs Memory Lines

The clearest difference is price: Memory Lines at Free against Plague Inc.'s $0.99. Memory Lines also leads on in-app purchases (none vs 10) and update cadence (every 6 days vs every 2 months). Plague Inc.'s advantage is ads (none vs shown) and chart position (#1 vs unranked). On device support there is nothing between them.

Memory Lines is free to download; Plague Inc. costs $0.99 up front. Plague Inc. sells 10 one-off in-app purchases. Memory Lines asks for nothing beyond the download.

Plague Inc. ships an update every 2 months, Memory Lines every 6 days. The most recent releases landed on October 19, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Plague Inc. | Memory Lines |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.8 (167K ratings)](https://appshunter.io/ios/app/plague-inc/id525818839/reviews)** | — |
| Number of ratings | **167K** | — |
| Positive reviews | 76.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Best chart rank | **#1** | — |
| Size | 116 MB | 46 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 9+ | 12+ |
| Developer | [Ndemic Creations](https://appshunter.io/developer/525818842) | [Vinay Kumar](https://appshunter.io/developer/1896567742) |

## What reviewers say

### Plague Inc.

[App page](https://appshunter.io/ios/app/plague-inc/id525818839)

**Currently charting:** #1 Top Paid · Strategy, #2 Top Paid · Simulation, #5 Top Paid · Games, #6 Top Paid, #187 Top Grossing · Strategy (US App Store)

A strategic simulation game where you evolve a deadly pathogen to infect the world and end humanity. Adapt your plague against global defenses and master different disease types to achieve victory. It's a high-stakes battle of strategy against the entire planet.

**Highlights:** Evolve deadly global plagues, Adapt against human defenses, Master 12 disease types, Infect 50+ countries, Hundreds of traits to evolve, Daily Diseases and Outbreak Mode

**Features:** Family Sharing, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Virus | $0.99 | one-time |
| Neurax Worm Expansion Pack | $1.99 | one-time |
| Necroa Virus Expansion Pack | $1.99 | one-time |
| Simian Flu Expansion Pack | $1.99 | one-time |
| Shadow Plague Expansion Pack | $1.99 | one-time |
| Unlock 7 Standard Plagues | $2.99 | one-time |
| Scenario Pack | $2.99 | one-time |
| Unlock All Genes | $7.99 | one-time |
| Unlock Cheats | $9.99 | one-time |
| Plague Pack | $12.99 | one-time |

**What reviewers like**

- 🚀 Addictive gameplay
- 🤔 Challenging and thought-provoking
- 👍 Realistic disease simulation
- 💡 Unique scenarios and special disease types
- 🎨 Immersive graphics and audio

**What reviewers complain about**

- 💰 Expensive in-app purchases
- 🕰️ Slow progression without paying
- 🐛 Inconsistent game mechanics
- 🤖 Unrealistic cure development
- 🤔 Lack of multiplayer mode

**Reported bugs**

- Inability to restore purchased content
- Glitches with certain disease types
- Inconsistent DNA point rewards
- Sudden difficulty spikes on normal mode

**Requested features**

- Multiplayer mode (player vs player)
- More realistic cure distribution and development
- Ability to customize game scenarios
- Expanded free content without paywall
- Improved progression for free-to-play users


### Memory Lines

[App page](https://appshunter.io/ios/app/memory-lines-memory-puzzle/id6768393873)

Test your visual memory and focus by memorizing and redrawing glowing patterns before they disappear. Engage in challenging single-player puzzles or compete against others worldwide in real-time multiplayer battles. Track your progress and unlock rewards as you sharpen your brain.

**Highlights:** Visual memory challenges, Brain training puzzles, Multiplayer brain battles, Offline solo gameplay, Daily rewards and streaks, Achievements and progression, Replay export and sharing

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

**In-app purchases:** none


## Frequently asked questions

### Is Plague Inc. free?

Plague Inc. costs $0.99, and also offers in-app purchases.

### Is Memory Lines free?

Memory Lines is free to download, with no in-app purchases.

### Do Plague Inc. or Memory Lines have ads?

Memory Lines shows ads; Plague Inc. does not.

### Which is updated more often, Plague Inc. or Memory Lines?

Plague Inc. ships an update every 2 months, and Memory Lines every 6 days. Most recently, Plague Inc. was updated on October 19, 2026 and Memory Lines on October 15, 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.*