Calculator Keyboard vs TerrApp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator Keyboard
This app provides a convenient keyboard that integrates a calculator, allowing for seamless calculations without switching apps. It supports a wide range of arithmetic and advanced functions, history records, and customizable features for efficient input and results.
- Integrated calculator keyboard
- Supports arithmetic and advanced functions
- History record
- Customizable toolbar and input
- Dark mode
- Cursor movement and decimal place retention
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Calculator Keyboard - Faster Arithmetic, Advanced functions Use the "calculator keyboard" to retain the calculation process and quickly calculate the results. No need to switch between applications, no need to copy and paste, calculate anytime, anywhere, convenient and fast. [Small] Less than 10 trillion [Quick] Quick start, fast input, fast calculation [Strong] Four operations, advanced functions Arithmetic: 1-2 + 3 × 4 ÷ 5 = 1.4 Parentheses: 10 ÷ (1 + 2) = 3.3333 More: π-5% + e + 10 ^ 2 + sin (90 °) + ∛9 + ln (3) + 5! = 229.8815 1/5 + cos (45 °) = 0.9071 10 ÷ 4 = 2.5 Supported operations and functions: - Arithmetic - Brackets - Pi π, percentage%, golden ratio ϕ, natural constant e - Square x², cubic x³, y power x ^ y - Square root √, cubic root ∛ - Trigonometric functions sin, cos, tan - Inverse trigonometric functions asin, acos, atan - Hyperbolic functions sinh, cosh, tanh - Natural logarithm ln, constant logarithm log - Random number rand - e to the power of x e ^ x - Countdown 1 / x - Power of 10 x 10 ^ x other: - Custom slide up input - Custom toolbar - History record - Button sound effects - Key vibration - Cursor movement - Angles and radians - Implicit multiplication - Retain decimal places - Keep results only - Long press to delete continuously - Quick input by sliding up - Automatically complete brackets - Dark mode contact: If you have a feature you want, or other suggestions or comments, please leave a comment or email us. If you find it useful, I look forward to you taking a minute to rate it and write two comments, useful comments and five stars will make it a bit ahead of the list, thanks! Email: ppics@qq.com
TerrApp
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Your personal reptile and amphibian breeder assistant. Track your animals, manage terrariums, and never forget a feeding schedule again. TerrApp is the perfect tool for any hobbyist wanting to organize their breeding setup. Stop relying on your memory or messy paper notes. Keep all the crucial information about your exotic pets right in your pocket. Adding your first terrarium and animal takes just a moment, and thanks to the clear interface, you will immediately know which pet needs your attention. Key features of the app: Terrarium management: Add and edit your tanks in one convenient place. Animal inventory: Assign your reptiles and amphibians to specific terrariums. Feeding schedule: Track past and upcoming feeding dates to prevent mistakes. Clear statuses: A quick glance at the home screen is enough to see what is fine and what requires urgent action. Data security: Create a free account to keep your breeding data safe and increase your limits. You can start as a guest with free slots for your first terrarium and animals. As your passion grows, you can upgrade to the Pro version to unlock the full potential of the app. Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is price: TerrApp at Free against Calculator Keyboard's $2.99. TerrApp also leads on update cadence (fortnightly vs every 3 months). Calculator Keyboard's advantage is in-app purchases (none vs 3) and device support (3 vs 1). On ads 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
TerrApp is free to download; Calculator Keyboard costs $2.99 up front. TerrApp sells 3 in-app purchases, starting at $9.99 per month. Calculator Keyboard asks for nothing beyond the download.
Calculator Keyboard ships an update every 3 months, TerrApp fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Calculator Keyboard | TerrApp |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.4 (9 ratings) — better | — |
| Positive reviews | 90.3% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 14.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 4 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | 万庄 黄 | Jakub Kazimierczak |
In-app purchases
Calculator Keyboard
No in-app purchases
TerrApp
- Monthly Premium$9.991 Month
- Yearly Premium$39.991 Year
- Lifetime Premium$99.99









