# Fault Line vs Cuspart

Fault Line and Cuspart are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Fault Line sells 3 in-app purchases, starting at $1.99 per month and Cuspart sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Fault Line ships an update fortnightly, Cuspart monthly. The most recent releases landed on November 13, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Fault Line | Cuspart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (57 ratings)](https://appshunter.io/ios/app/fault-line-earthquakes/id6476166594/reviews)** | — |
| Number of ratings | **57** | — |
| Positive reviews | 55.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 39 MB | 49 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Murat Kuslu](https://appshunter.io/developer/1566247480) | [Mustafa Tolga DALBUDAK](https://appshunter.io/developer/1479052908) |

## What reviewers say

### Fault Line

[App page](https://appshunter.io/ios/app/fault-line-earthquakes/id6476166594)

This app provides real-time earthquake tracking and alerts, helping you stay informed about seismic activity worldwide. It offers interactive maps, customizable notifications, and family safety features to keep your loved ones safe during emergencies.

**Highlights:** Real-time earthquake feed, Interactive earthquake map, Customizable smart alerts, Family safety circle, Emergency preparedness tools, Widgets and Live Activities

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fault Line Pro Monthly | $1.99 | per month |
| Fault Line Pro Yearly | $9.99 | per year |
| Fault Line Pro | $19.99 | one-time |


### Cuspart

[App page](https://appshunter.io/ios/app/cuspart-earthquake/id6737773368)

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to Pro | $0.99 | one-time |
| Espresso | $1.49 | one-time |
| Flat White | $1.99 | one-time |
| Caffè Americano | $2.49 | one-time |
| Caffè Mocha | $2.99 | one-time |
| Classic Hot Chocolate | $3.49 | one-time |
| Special Hot Chocolate | $3.99 | one-time |


## Frequently asked questions

### Is Fault Line free?

Fault Line is free to download, with in-app purchases available.

### Is Cuspart free?

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

### Do Fault Line or Cuspart have ads?

Both Fault Line and Cuspart show ads.

### Which is updated more often, Fault Line or Cuspart?

Fault Line ships an update fortnightly, and Cuspart monthly. Most recently, Fault Line was updated on November 13, 2026 and Cuspart on October 29, 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.*