Calculation Pad vs waai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculation Pad
This calculator app keeps a history of your calculations, allowing you to easily reuse past results. It offers enhanced security features like fingerprint or password protection for sensitive data. Despite its advanced functionality, it remains free to use.
- Calculation history
- Reuse past calculations
- Add taxes
- Fingerprint/password/face protection
- Free to use
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Calculation Pad is a calculator. Of course it can keep your history, and add taxes to your calculation easily, and use your history for a new calculation. Even if you are a spy running a top secret project, you can easily protect your calculation result with your fingerprint or password or your face. However functional this calculator this is, it can't beat the price of your daily necessities. After all, it's just a calculator.
waai
Easily set your favorite images as wallpaper without icons obstructing the view. This utility helps you precisely position your image on a guide screen, ensuring a perfect fit for your device's home screen.
- Custom wallpaper creation
- Icon obstruction avoidance
- Precise image positioning
- iPhone/iPad home screen guide
- Parallax effect toggle
- iPad landscape support
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I want to use my favorite image as wallpaper, but I can't paste it properly because icons are hindering the view... This app will help you out! While looking at the guide image created based on the iPhone/iPad home screen, you can move it around to create an image at a position where it looks good, and set it as the wallpaper. - Parallax effect can be turned on or off. - Supports iPad landscape orientation.
Screenshots
Verdict
The clearest difference is in-app purchases: waai at none against Calculation Pad's 5. On price, update cadence, ads 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
Both are free to download. Calculation Pad sells 5 one-off in-app purchases. waai asks for nothing beyond the download.
Calculation Pad ships an update fortnightly, waai every 2 weeks. The most recent releases landed on September 17, 2026 and June 24, 2026 respectively.
| Parameter | Calculation Pad | waai |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 3 MB | 90 MB |
| Age rating | 4+ | 4+ |
| Developer | Yukio Tajima | Masahiro Ikeda |
Customer experience
Calculation Pad
waai
In-app purchases
Calculation Pad
- Developer Support$0.99
- Small tip$0.99
- Medium tip$3.99
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- Developer Support$6.99
- Large tip$6.99
waai
No in-app purchases
