Bond Yield Calculator vs The Big Keyboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bond Yield Calculator
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.
- Yield-to-maturity calculation
- Visualization of bond yield
- Fast and accurate algorithm
- Robust input validation
- Convenient controls
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Calculate and visualise bond yield to maturity. Bond Yield Calculator features a fast & accurate yield algorithm, robust input validation, and convenient controls.
The Big Keyboard
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.
- 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
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LARGE TEXT & BIG KEYS: Scale text size up to 2.5x larger - perfect for better readability Button sizes stay comfortable while text gets bigger No more squinting at tiny letters Word suggestions + Autocorrect Supported Keyboard Languages: English, Spanish, Portuguese, Dutch, Italian, German (QWERTZ), French (AZERTY), Finnish, Danish, Polish, Turkish, Romanian, and Swedish. MULTIPLE KEYBOARD LAYOUTS: Full QWERTY keyboard with smart auto-capitalization Dedicated numeric keypad for numbers Arrow keys for precise cursor control Complete emoji collection with categories Symbols and punctuation layouts CUSTOMIZABLE EXPERIENCE: Light, Dark, High Contrast and themes Adjustable text and emoji sizes Sound and haptic feedback controls ACCESSIBILITY FOCUSED Perfect for users with vision difficulties Large, clear text that's easy to read High contrast themes for better visibility Simple, intuitive design EASY TO USE Quick setup in just minutes Works with all your favorite apps Smooth, responsive typing experience No complicated settings - just works! Why choose The Big Keyboard? Unlike other keyboards that make everything bigger, The Big Keyboard smartly scales only the text while keeping buttons the perfect size. This means better readability without losing screen space! Perfect for: Seniors who need larger text Users with visual impairments Anyone who wants a more comfortable typing experience People who prefer customizable keyboards Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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. Both last shipped on October 24, 2026.
| Parameter | Bond Yield Calculator | The Big Keyboard |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | 5.0 (1 ratings) — better | 3.5 (13 ratings) |
| Positive reviews | 100.0% of reviews — better | 64.3% of reviews |
| Number of ratings | 1 | 13 — better |
| Update frequency | Every 3 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #194 — better |
| Devices | iPhone, iPad, Mac, Apple Watch, Vision Pro — better | iPhone, iPod |
| Requires iOS | 26.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 11 MB |
| Age rating | 4+ | 4+ |
| Developer | Amatino | Defriction LLC |
Customer experience
Bond Yield Calculator
The Big Keyboard
In-app purchases
Bond Yield Calculator
No in-app purchases
The Big Keyboard
No in-app purchases
Questions
Is Bond Yield Calculator free?
Is The Big Keyboard free?
Which has better reviews, Bond Yield Calculator or The Big Keyboard?
Do Bond Yield Calculator or The Big Keyboard have ads?
Which is updated more often, Bond Yield Calculator or The Big Keyboard?
Other comparisons
