Calc4Key vs Site Checker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calc4Key
Perform calculations directly within your keyboard, eliminating the need to switch apps or copy-paste results. This utility allows you to calculate anywhere you type, enhancing productivity and convenience.
- Calculator on keyboard
- Calculate anywhere
- No app switching
- No copy-paste results
- Easy keyboard selection
Read full descriptionHide full description
Use calculator directly on keyboard anywhere, anytime. No switch apps, no copy and paste results anymore! You must enable the keyboard under system settings, then select it in your keyboard, using the globe button. 1. Open the settings app 2. Go General > Keyboard > Keyboards > Add New Keyboard 3. Add Calc4Key 4. Start typing in any app 5. Press "globe" icon to switch to the Key4Cal keyboard 6. Enjoy
Site Checker
This app provides web tool utilities to monitor network connection stability and website availability. It includes HTTP tests for API checks and a downtime detector to verify site access globally. Useful for system administrators and web developers to troubleshoot DNS and ISP connection issues.
- WiFi and mobile data connection monitoring
- HTTP test for REST API checks
- Downtime detector for site access
- Works on 3G/4G/5G/LTE and WiFi
- Supports VPN and proxy servers
- Troubleshoots DNS and ISP connection issues
Read full descriptionHide full description
Site Checker — a set of web tool utilities for monitoring the stability of your WiFi and mobile data connection. This application has a built-in HTTP test for REST API checks and a downtime detector to verify site access from different countries. The app works on 3G/4G/5G/LTE and WiFi networks, like home and corporate ones. You can use the app even with a VPN or proxy server on your router. With just a couple of clicks, check if your favorite sites are down right now. This is a must-have web tool for system administrators and web developers, helping to solve problems with DNS and test connections on your ISP's nodes. Get the app today and check your network speed and website availability!
Screenshots
Verdict
The clearest difference is rating: Calc4Key at 4.6 against Site Checker's 3.4. Calc4Key also leads on update cadence (daily vs every 2 months) and ratings volume (821 vs 12). On ads, in-app purchases and device support 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
Calc4Key costs $0.99 and Site Checker $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Calc4Key holds the better App Store score, 4.6 against 3.4. That said, the two scores are not equally well evidenced: Calc4Key has 821 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 63% of Calc4Key's written reviews are positive against 50% of Site Checker's.
Calc4Key ships an update daily, Site Checker every 2 months. The most recent releases landed on October 14, 2026 and October 12, 2026 respectively.
| Parameter | Calc4Key | Site Checker |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | 4.6 (821 ratings) — better | 3.4 (12 ratings) |
| Positive reviews | 62.5% of reviews — better | 50.0% of reviews |
| Number of ratings | 821 — better | 12 |
| Update frequency | Daily — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 11.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 9 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Khang Le | Tamara Dudarenko |
Customer experience
Calc4Key
Site Checker
In-app purchases
Calc4Key
No in-app purchases
Site Checker
No in-app purchases
Questions
Is Calc4Key free?
Is Site Checker free?
Which has better reviews, Calc4Key or Site Checker?
Do Calc4Key or Site Checker have ads?
Which is updated more often, Calc4Key or Site Checker?
Other comparisons
