# CalcFast vs Quakes Today

The clearest difference is rating: Quakes Today at 5.0 against CalcFast's 4.2. Quakes Today also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (17.0 vs 27.1). CalcFast's advantage is in-app purchases (none vs 1). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Quakes Today sells 1 one-off in-app purchase. CalcFast asks for nothing beyond the download.

Quakes Today holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 21 and 8 respectively. Written reviews point the same way: 78% of CalcFast's written reviews are positive against 80% of Quakes Today's.

CalcFast ships an update every 2 months, Quakes Today every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | CalcFast | Quakes Today |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (21 ratings)](https://appshunter.io/ios/app/calcfast/id876781417/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/quakes-today/id1576133696/reviews)** |
| Number of ratings | **21** | 8 |
| Positive reviews | 78.3% of reviews | **80.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 6 MB | 22 MB |
| Requires iOS | 27.1 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hannes Sverrisson](https://appshunter.io/developer/428851947) | [Jim Marquardt](https://appshunter.io/developer/1576133698) |

## What reviewers say

### CalcFast

[App page](https://appshunter.io/ios/app/calcfast/id876781417)

A fast and elegant calculator for Apple devices that displays your calculation history. It offers a Today Extension for quick access and supports Apple Watch, external keyboards, and VoiceOver.

**Highlights:** Calculation history display, Today Extension for quick calculations, Apple Watch app, Dark/light mode selection, External keyboard support, VoiceOver support

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

**In-app purchases:** none


### Quakes Today

[App page](https://appshunter.io/ios/app/quakes-today/id1576133696)

This app provides a quick and easy summary of global earthquake activity from the past 24 hours. Filter and sort quakes by various criteria, view details on an interactive map, and visualize swarms in real-time. A PRO version offers advanced features like time-based animations and custom location teleportation.

**Highlights:** 24-hour global earthquake summary, Filter and sort by place, magnitude, time, and distance, Interactive map with event details, Real-time earthquake swarm visualization, Timeline feature for at-a-glance snapshots, Time Machine animation (PRO), Customizable location teleportation (PRO)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quakes Today Pro | $0.99 | one-time |


## Frequently asked questions

### Is CalcFast free?

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

### Is Quakes Today free?

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

### Which has better reviews, CalcFast or Quakes Today?

Quakes Today is rated higher. CalcFast averages 4.2 out of 5 from 21 ratings, while Quakes Today averages 5.0 from 8 ratings.

### Do CalcFast or Quakes Today have ads?

Neither CalcFast nor Quakes Today shows ads.

### Which is updated more often, CalcFast or Quakes Today?

CalcFast ships an update every 2 months, and Quakes Today every 3 weeks. Most recently, CalcFast was updated on October 24, 2026 and Quakes Today on October 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*