Trip Reader (NFC) vs Calculator Keyboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trip Reader (NFC)
Access your Chinese public transit card's balance and transaction history using your iPhone's NFC reader. View station names, monthly discounts, and bus routes without needing internet or Bluetooth. Save your travel history and sync it across devices.
- Read balance and history
- Show station names
- Track monthly discounts
- Display bus route numbers
- Save travel history
- Sync to iCloud
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Trip Reader uses iPhone's internal NFC reader to get balance and history from public transit cards issued across China. No Internet or Bluetooth is needed. Main features: • Balance and history • Show station names • Monthly discount policy and progress • Bus route number • Save history and comments • Sync to iCloud ************************************** Beijing Yikatong is not supported due to technical reason. ************************************** Cards supported: • Beijing Hutong Card (京津冀互联互通卡, with T-Union mark) • Tianjin City Card (with T-Union mark) • Nanjing City Card (with T-Union mark) • Suzhou Citizen Card • Shanghai Public Transportation Card (Purple card and T-Union card) • Kunshan Citizen Card • Guangzhou Yang Cheng Tong (CPU card only) • Lingnan Pass • Shenzhen Tong (FeliCa type not supported) • Chengdu Tianfu Tong (CPU card only) • Other T-Union or City Union cards issued across China (some dual-module cards may show T-Union history only) Note: Student cards, senior cards etc. are not supported. This app does not have access to official database. Please use with caution and do not rely on the result.
Calculator Keyboard
This app turns your keyboard into a powerful calculator, allowing you to perform calculations directly within any application. Avoid switching apps and copying numbers by calculating on the go, whether you're texting, taking notes, or browsing.
- Calculate within any app
- Supports Dark Mode
- Customizable decimal points
- Scientific calculator functions
- Calculation history access
- Keyboard feedback options
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Calku transforms your keyboard into a handy calculator, making quick calculations effortless without switching apps! Whether you're texting, taking notes, or browsing, you can instantly calculate within any app. Perfect for messaging, homework, or day-to-day tasks. Compatible with many apps such as • Messages, Messenger, WeChat, Line, Twitter, Telegram, Instagram, etc. • Safari • Notes • Mail • Stocks • And many more! Features : • Supports Dark Mode • Full iPadOS Compatibility • Customizable Decimal Points • Powerful Scientific Calculator • Access Your Calculation History • Keyboard Feedback (Sound & Haptic) Say goodbye to app-switching and copying-pasting—Calku makes calculations easy and seamless in any app! Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://supagarn-pa.com/Calku/privacy-policy
Screenshots
Verdict
The clearest difference is in-app purchases: Trip Reader (NFC) at none against Calculator Keyboard's 2. Trip Reader (NFC) also leads on review sentiment (93% vs 77%). Calculator Keyboard's advantage is update cadence (every 3 weeks vs every 2 months). On price, rating, ratings volume and 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
Both are free to download. Calculator Keyboard sells 2 in-app purchases, starting at $0.99 per month. Trip Reader (NFC) asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.7 for Trip Reader (NFC) against 4.7 for Calculator Keyboard. Both are backed by a comparable volume of ratings — 524 and 493 respectively. Written reviews are what separate them: 93% of Trip Reader (NFC)'s written reviews are positive against 77% of Calculator Keyboard's.
Trip Reader (NFC) ships an update every 2 months, Calculator Keyboard every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Trip Reader (NFC) | Calculator Keyboard |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (524 ratings) | 4.7 (493 ratings) — better |
| Positive reviews | 92.9% of reviews — better | 76.8% of reviews |
| Number of ratings | 524 — better | 493 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 14.0 |
| Further details — not scored | ||
| Size | 5 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Domosekai Limited | Supagarn Pattananuchart |
Customer experience
Trip Reader (NFC)
Calculator Keyboard
Bugs and requests
Trip Reader (NFC)
Not enough reviews yet to summarise bugs or requests.
Calculator Keyboard
Reported bugs
7 issues- Cannot delete the app
- App is buggy sometimes
- Non-standard division and multiplication symbols not recognized by other apps
- Incorrect calculations (e.g., 3.10 / 1000 = 0)
- App only works on Apple Mail and Notes initially
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- Cannot get it to 'Add Keyboard' on specific devices/iOS versions
- No scientific calculator available
Requested features
8 requests- Add thousands separator for numbers
- Haptic feedback on key presses
- Option to hide computation in text box
- History button on main page
- Option for standard multiplication and division
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- Add scientific/accountant calculator
- Add Pi, square root, etc. to calculator
- Vibration on touch
In-app purchases
Trip Reader (NFC)
No in-app purchases
Calculator Keyboard
- Calku PRO (1 Month)$0.991 Month
- Calku Pro - Lifetime$5.99
Questions
Is Trip Reader (NFC) free?
Is Calculator Keyboard free?
Which has better reviews, Trip Reader (NFC) or Calculator Keyboard?
Do Trip Reader (NFC) or Calculator Keyboard have ads?
Which is updated more often, Trip Reader (NFC) or Calculator Keyboard?
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