# Calculation Pad vs waai

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.

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 October 5, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Calculation Pad | waai |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calculation-pad/id1473259620/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 3 MB | 90 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yukio Tajima](https://appshunter.io/developer/1473259619) | [Masahiro Ikeda](https://appshunter.io/developer/1551911934) |

## What reviewers say

### Calculation Pad

[App page](https://appshunter.io/ios/app/calculation-pad/id1473259620)

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.

**Highlights:** Calculation history, Reuse past calculations, Add taxes, Fingerprint/password/face protection, Free to use

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Developer Support | $0.99 | one-time |
| Small tip | $0.99 | one-time |
| Medium tip | $3.99 | one-time |
| Developer Support | $6.99 | one-time |
| Large tip | $6.99 | one-time |


### waai

[App page](https://appshunter.io/ios/app/waai/id1551924499)

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.

**Highlights:** Custom wallpaper creation, Icon obstruction avoidance, Precise image positioning, iPhone/iPad home screen guide, Parallax effect toggle, iPad landscape support

**In-app purchases:** none


## Frequently asked questions

### Is Calculation Pad free?

Calculation Pad is free to download, with in-app purchases available.

### Is waai free?

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

### Do Calculation Pad or waai have ads?

Neither Calculation Pad nor waai shows ads.

### Which is updated more often, Calculation Pad or waai?

Calculation Pad ships an update fortnightly, and waai every 2 weeks. Most recently, Calculation Pad was updated on October 5, 2026 and waai on September 29, 2026.

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