# Bond Yield Calculator vs The Big Keyboard

The clearest difference is rating: Bond Yield Calculator at 5.0 against The Big Keyboard's 3.5. Bond Yield Calculator also leads on review sentiment (100% vs 64%) and device support (5 vs 2). The Big Keyboard's advantage is update cadence (every 2 days vs every 3 months) and ratings volume (13 vs 1). On ads, in-app purchases and monetization model there is nothing between them.

Bond Yield Calculator costs $0.99 and The Big Keyboard $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bond Yield Calculator holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: The Big Keyboard has 13 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of Bond Yield Calculator's written reviews are positive against 64% of The Big Keyboard's.

Bond Yield Calculator ships an update every 3 months, The Big Keyboard every 2 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Bond Yield Calculator | The Big Keyboard |
| --- | --- | --- |
| Price | **$0.99** | $1.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bond-yield-calculator/id6476597484/reviews)** | [3.5 (13 ratings)](https://appshunter.io/ios/app/the-big-keyboard/id6746368921/reviews) |
| Number of ratings | 1 | **13** |
| Positive reviews | **100.0% of reviews** | 64.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#194** |
| Size | 2 MB | 11 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | **iPhone, iPad, Mac, Apple Watch, Vision Pro** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Amatino](https://appshunter.io/developer/1664965510) | [Defriction LLC](https://appshunter.io/developer/1626590021) |

## What reviewers say

### Bond Yield Calculator

[App page](https://appshunter.io/ios/app/bond-yield-calculator/id6476597484)

This utility app calculates and visualizes the yield-to-maturity for bonds. It offers a fast and accurate calculation algorithm with strong input validation and user-friendly controls.

**Highlights:** Yield-to-maturity calculation, Visualization of bond yield, Fast and accurate algorithm, Robust input validation, Convenient controls

**Features:** Apple Watch app

**In-app purchases:** none


### The Big Keyboard

[App page](https://appshunter.io/ios/app/the-big-keyboard/id6746368921)

**Currently charting:** #194 Top Paid · Utilities (US App Store)

This keyboard app offers larger text and buttons for improved readability, especially for users with vision difficulties. It provides customizable themes, multiple layouts including a numeric keypad and arrow keys, and supports various languages.

**Highlights:** Scalable text size up to 2.5x, Comfortable button sizes, Word suggestions and autocorrect, Multiple keyboard layouts (QWERTY, numeric, arrows), Full emoji collection, Customizable themes (light, dark, high contrast), Sound and haptic feedback controls

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Bond Yield Calculator free?

Bond Yield Calculator costs $0.99, with no in-app purchases.

### Is The Big Keyboard free?

The Big Keyboard costs $1.99, with no in-app purchases.

### Which has better reviews, Bond Yield Calculator or The Big Keyboard?

Bond Yield Calculator is rated higher. Bond Yield Calculator averages 5.0 out of 5 from 1 ratings, while The Big Keyboard averages 3.5 from 13 ratings.

### Do Bond Yield Calculator or The Big Keyboard have ads?

Neither Bond Yield Calculator nor The Big Keyboard shows ads.

### Which is updated more often, Bond Yield Calculator or The Big Keyboard?

Bond Yield Calculator ships an update every 3 months, and The Big Keyboard every 2 days. Most recently, Bond Yield Calculator was updated on October 25, 2026 and The Big Keyboard on October 24, 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.*