CalcFast vs Quakes Today
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CalcFast
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.
- Calculation history display
- Today Extension for quick calculations
- Apple Watch app
- Dark/light mode selection
- External keyboard support
- VoiceOver support
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Fast and simple calculator for iPad, iPhone and Apple Watch that shows the calculation history, includes a Today Extension that allows for fast calculation by swiping down and 3D Touch for quick interactions. Numbers are formatted for your country, i.e. period in the US and comma in Europe. Ever lost your train of thought half way through a calculation and thought how handy it would be to review your calculations. The aim of this Calculator is to be fast, elegant and simple. Features: - The calculator can open side by side or over other apps in iPadOS. - Select dark or light mode. - External keyboard support. - Smart Apple Watch Calculator included. - Light weight Today Extension included. - Calculations shown when input and on tape. - Key click confirms pressing of buttons, which may be turned off. - Previous calculation is repeated when the equal sign is pressed. - Numbers are shown in local format, depending on your Region Formats, i.e. comma used in Europe. The number of decimal digits may be set in the Settings. - VoiceOver is supported. - Calculations Tape may be deleted by Tapping on it.
Quakes Today
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.
- 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)
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QUAKES TODAY gives you a quick, easy to read summary of the last 24 hours of earthquake activity around the globe. You can filter and sort quakes by place, magnitude, event time, location and distance from you. Tap on any quake in the list for details and an interactive map. Visualize earthquake swarms in real time with new cluster mode, and jump from one event to another quickly and easily. The new TIMELINE feature displays a snapshot of earthquakes at a glance. Tap on a peg to scroll down the list to the corresponding event. QUAKES TODAY is the perfect app for those living in quake country, as well as anyone interested in seismology. Was there a quake today? Pull up QUAKES TODAY and have a look. Data is refreshed every five minutes, keeping you up to date around the clock. QUAKES TODAY PRO in-app purchase gives unlimited use of features: + TIME MACHINE displays a time-based animation of all earthquake activity on the map. Adjustable playback speed and rate. + TELEPORTER allows you to customize your location to any point on the globe. You can save your favorite teleport locations to check in on activity near your family and friends.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | CalcFast | Quakes Today |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (21 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 78.3% of reviews | 80.0% of reviews — better |
| Number of ratings | 21 — better | 8 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 27.1 | 17.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Hannes Sverrisson | Jim Marquardt |
Customer experience
CalcFast
Quakes Today
In-app purchases
CalcFast
No in-app purchases
Quakes Today
- Quakes Today Pro$0.99
Questions
Is CalcFast free?
Is Quakes Today free?
Which has better reviews, CalcFast or Quakes Today?
Do CalcFast or Quakes Today have ads?
Which is updated more often, CalcFast or Quakes Today?
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