Calculator Plus v2 vs HK Mixed Keyboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator Plus v2
This app offers a powerful yet simple calculator experience, combining standard and scientific functions with live previews and error hints. It supports various input methods, including hardware keyboards and Apple Pencil, and provides multiple display formats for clear understanding of calculations.
- Standard and scientific calculator
- Live expression and answer preview
- Multiple display formats
- Hardware keyboard support
- Apple Pencil Scribble support
- Bi-directional clipboard support
- Syntax error hints
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Calculator Plus is a standard and scientific calculator that has simplicity at its core, while not compromising on functionality. Even with its simple user interface inspired by the built-in Calculator app on iOS, it offers much, much more - and with no ads! With full expression and live answer preview, be faster than ever at calculating, and see exactly what you typed. Understand your answers by displaying them in exact form, scientific notation, fractions and more. Catch the exact errors with helpful syntax errors, with beautiful animations to complement your calculations. The full scientific calculator is also present in the portrait layout, so you can calculate scientific operations away one-handed on your phones, or via a space-efficient vertical window on larger screens. That's not all! If you're on a Mac, or have a hardware keyboard connected to your iPad or iPhone, simply type your math expressions normally and it will be registered - including every scientific operation listed. Clipboard support not only allows you to copy your calculations for others to see, it also gives you the ability to instantly take any expression from anywhere and paste into the app. Plus, enjoy bonus functionality like math expression autocorrection, voice dictation, Apple Pencil Scribble, and more! Download Calculator Plus to experience it for yourself! Feature List: - Standard & Scientific Calculator. - Simple UI design puts focus on your calculations. - Live expression and answer display while typing. - Full scientific calculator in the portrait layout with minimal rearrangement. - View long operations comfortably with scrollable calculation panels. - Multiple display formats: Exact Form, Scientific Notation, Fractions and more! - Bi-directional clipboard: Copy & Paste any expression into and out of the app. - Math Evaluation Overrides: For those who want to configure autocorrect or prefer non-standard notations/conventions. - Custom Scientific Typing Mode: Append, Substitute or a hybrid of both when using on-screen buttons. - Full Hardware Keyboard input support (including scientific operations!) - Apple Pencil Scribble support on iPadOS 14+ in English. - Basic Voice Dictation input support in English. - iPadOS SlideOver, Split View and Stage Manager multitasking support. - Satisfying clicks with haptic feedback on modern iPhones. - Complete support for all math operations and input methods on the Apple Watch app. - Useful Syntax Error hints to let you know exactly what's wrong. - Lightweight: only a few MB in size. - No ads, no tracking :) If you have or find any problems, feel free to contact me under App Support within Calculator Plus. Developer: Wern
HK Mixed Keyboard
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Chinese and English, together on one keyboard. HK Mixed Keyboard helps you type the way you talk. Choose Quick (Sucheng / Simplified Cangjie), Jyutping or Pinyin for Chinese, and keep typing English on the same familiar QWERTY layout. Choose Chinese, English or mixed candidates as you go. Find the word you need English words can bring up Chinese dictionary suggestions: type hello and choose 你好, or keep the English word. Expand the candidate list to explore more choices. Optional Jyutping and Pinyin readings help you recognise Chinese candidates. Your preferred Chinese input Use Quick radicals, Cantonese Jyutping or Mandarin Pinyin. Switch the input method from 123 → ⋯ when you want to use another Chinese method. Quick radicals remain visible on the alphabet keys. Traditional and Simplified Chinese output are both supported. Built for everyday typing Slide across the keyboard to move the cursor. Add emoji, numbers and symbols. Save custom words for Quick, Jyutping or Pinyin, and import or export your personal dictionary as CSV. You can clear learned entries, turn off learning or use private input. Offline on your device Dictionaries are included with the app. The app and keyboard do not connect to a network or upload typed content. No account, advertising or analytics is included. Your settings, custom words and learning stay on your device. Bundled dictionary credits and source materials can be viewed and exported offline. Set it up once Open iOS Settings → General → Keyboard → Keyboards → Add New Keyboard and choose HK Mixed Keyboard (HK混合鍵盤). Full Access is optional: built-in dictionaries work without it. Enable it to share preferences, custom words and learned entries locally with the companion app. Tap 123 → ⋯ to change input methods or keyboard settings. For iPhone and iPad running iOS / iPadOS 16 or later. The app interface is in Traditional Chinese.
Screenshots
Verdict
The clearest difference is update cadence: HK Mixed Keyboard at every 5 days against Calculator Plus v2's every 2 months. Calculator Plus v2's advantage is device support (5 vs 2) and iOS requirement (12.0 vs 16.0). On price, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Calculator Plus v2 ships an update every 2 months, HK Mixed Keyboard every 5 days. The most recent releases landed on November 2, 2026 and November 6, 2026 respectively.
| Parameter | Calculator Plus v2 | HK Mixed Keyboard |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (132 ratings) — better | — |
| Positive reviews | 89.2% of reviews | — |
| Number of ratings | 132 — better | — |
| Update frequency | Every 2 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod, Mac, Apple Watch — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 14 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Wern Jie Lim | Lung Wai Hor |
Bugs and requests
Calculator Plus v2
Reported bugs
3 issues- Crashes after recent update
- Incorrect results for some calculations
- Keyboard input not working as expected
Requested features
6 requests- Add widget support
- Implement iCloud sync for history
- Provide light/dark mode options
- Allow customization of button layout
- Add unit conversion tools
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- Improve percentage calculation logic
HK Mixed Keyboard
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator Plus v2
No in-app purchases
HK Mixed Keyboard
No in-app purchases
Questions
Is Calculator Plus v2 free?
Is HK Mixed Keyboard free?
Do Calculator Plus v2 or HK Mixed Keyboard have ads?
Which is updated more often, Calculator Plus v2 or HK Mixed Keyboard?
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