# Easy Input Calculator vs Stopwatch Library

The clearest difference is price: Stopwatch Library at Free against Easy Input Calculator's $0.99. Stopwatch Library also leads on update cadence (every 3 days vs every 5 months). Easy Input Calculator's advantage is in-app purchases (none vs 1). On ads, device support and iOS requirement there is nothing between them.

Stopwatch Library is free to download; Easy Input Calculator costs $0.99 up front. Stopwatch Library sells 1 one-off in-app purchase. Easy Input Calculator asks for nothing beyond the download.

Easy Input Calculator ships an update every 5 months, Stopwatch Library every 3 days. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Easy Input Calculator | Stopwatch Library |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 days** |
| Monetization | Paid | — |
| Size | 3 MB | 5 MB |
| Requires iOS | **16** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yuta Kobayashi](https://appshunter.io/developer/1169055350) | [Naoyuki Hasegawa](https://appshunter.io/developer/6777422704) |

## What reviewers say

### Easy Input Calculator

[App page](https://appshunter.io/ios/app/easy-input-calculator/id1169055351)

This calculator app features a simple, user-friendly design with large buttons and characters for easy visibility. It includes special buttons for quickly inputting billions, millions, and thousands, streamlining complex calculations. The app is available in over 60 languages and allows users to copy results to the clipboard.

**Highlights:** Large, easy-to-see buttons, Large characters for high visibility, Billion, Million, Thousand input buttons, Copy calculation results to clipboard, Supports over 60 languages, Basic calculator functions

**Features:** Vision Pro support

**In-app purchases:** none


### Stopwatch Library

[App page](https://appshunter.io/ios/app/stopwatch-library/id6794338987)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を削除 | $2.99 | one-time |


## Frequently asked questions

### Is Easy Input Calculator free?

Easy Input Calculator costs $0.99, with no in-app purchases.

### Is Stopwatch Library free?

Stopwatch Library is free to download, with in-app purchases available.

### Do Easy Input Calculator or Stopwatch Library have ads?

Neither Easy Input Calculator nor Stopwatch Library shows ads.

### Which is updated more often, Easy Input Calculator or Stopwatch Library?

Easy Input Calculator ships an update every 5 months, and Stopwatch Library every 3 days. Most recently, Easy Input Calculator was updated on October 16, 2026 and Stopwatch Library on October 13, 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.*