Calcvier vs Calc4Key
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calcvier
Transform your device's keyboard into a powerful calculator. Perform quick calculations directly within any app without switching screens or copying and pasting results.
- Calculator keyboard integration
- Perform calculations anywhere
- No app switching required
- No copy-pasting results
- Use in Notes, Mail, Safari, Messages
Read full descriptionHide full description
The Calcvier will turn your keyboard into Calculator! Add calculator keyboard to make fast calculations anywhere. No need to switch between apps or use some widget, no need to copy and paste results! To enable Calcvier on your device: 1) Open Settings app 2) Go to General > Keyboard > Keyboards 3) Tap Add New Keyboard... 4) Tap Calcvier You can use Calcvier keyboard in any app such Notes, Mail, Safari, Messages and other!
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
Screenshots
Verdict
The clearest difference is update cadence: Calc4Key at daily against Calcvier's every 8 months. Calc4Key also leads on ratings volume (828 vs 143) and price ($0.99 vs $2.99). Calcvier's advantage is review sentiment (81% vs 63%). On rating, ads, in-app purchases and monetization model 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
Calcvier costs $2.99 and Calc4Key $0.99 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 4.4. That said, the two scores are not equally well evidenced: Calc4Key has 828 ratings behind it against 143, so its average is the more settled of the two. Written reviews complicate that: 81% of Calcvier's written reviews are positive against 63% of Calc4Key's, so the app with the better star average is not the one people write more warmly about.
Calcvier ships an update every 8 months, Calc4Key daily. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Calcvier | Calc4Key |
|---|---|---|
| Price | $2.99 | $0.99 — better |
| Rating | 4.4 (143 ratings) | 4.6 (828 ratings) — better |
| Positive reviews | 81.2% of reviews — better | 62.5% of reviews |
| Number of ratings | 143 | 828 — better |
| Update frequency | Every 8 months | Daily — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Sergei Shpygar | Khang Le |
Customer experience
Calcvier
Calc4Key
In-app purchases
Calcvier
No in-app purchases
Calc4Key
No in-app purchases
