NFC Reader / Writer vs uCalculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NFC Reader / Writer
This utility app allows you to read, save, and share information stored on NFC tags. It can extract data like URLs, contact cards, and text messages. Note that NFC tag reading requires an iPhone 7 or newer.
- Read NFC tags
- Save tags for later
- Share tag data
- Save contacts from tags
- Open URLs from tags
- Display text messages
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With NFC Reader you can read tags, save them for later viewing, share them, save contacts, open URLs and more! Be advised: Reading NFC tags requires iPhone 7, 8, or X. FAQ: - Will my iPhone work with NFC? That depends: iPhone 7 and up supports NFC reading and NFC reading only works when NFC tags are NDEF formatted. If you're not sure what that means, you can reach out to our support for more information. - Are NFC tags RFID tags? No, NFC NDEF tags are not RFID tags - this means your gym cards, debit/credit cards, hotel cards, etc aren't readable by this app. - Will this app help me pair to my speaker/router/camera/etc? No, this app doesn't support deep integrations into NFC enabled products - this app is intended to read NFC tags and display data within those tags. Some tags contain actionable data like website URLs, text messages, geotags, contact cards, etc. If you have any questions, reach out to me at andrew@baristable.com
uCalculator
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The most powerful, beautiful & high precision Programmer, Scientific and Standard calculator on the mobile/Pad platform. The programmer mode calculator support binary(BIN), octal(OCT), decimal(DEC) and hexadecimal(HEX), precise to 64 digits. The scientific mode calculator support most scientific calculation formula, precise to 32 digits. The standard mode calculator is simple, elegant and practical, precise to 16 digits. Automatic quick switch different calculator modes while device orientation changed if auto rotation enabled. You can also force to switch to any calculator mode by long touch the top-left 'u' button or long press the keyboard key 'u' then select the desire calculator mode.
Screenshots
Verdict
The clearest difference is price: NFC Reader / Writer at Free against uCalculator's $4.99. NFC Reader / Writer also leads on update cadence (monthly vs every 13 months). uCalculator's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support 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
NFC Reader / Writer is free to download; uCalculator costs $4.99 up front. NFC Reader / Writer sells 1 one-off in-app purchase. uCalculator asks for nothing beyond the download.
NFC Reader / Writer ships an update monthly, uCalculator every 13 months. The most recent releases landed on July 8, 2026 and September 13, 2026 respectively.
| Parameter | NFC Reader / Writer | uCalculator |
|---|---|---|
| Price | Free — better | $4.99 |
| Rating | 3.6 (19 ratings) — better | — |
| Positive reviews | 16.0% of reviews | — |
| Number of ratings | 19 — better | — |
| Update frequency | Monthly — better | Every 13 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 9.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Sowers | 伟锋 阮 |
Bugs and requests
NFC Reader / Writer
Reported bugs
7 issues- App crashes immediately on launch for devices without NFC support
- NFC reading fails on iPhone 6, 6S, and SE despite claimed compatibility
- Session invalidated - feature not supported error messages
- Apple Pay popup appears when scanning NFC tags
- Unreadable symbols displayed on screen during scanning
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- App won't open on multiple device models
- CoreNFC framework compatibility issues
Requested features
6 requests- Support for older iPhone models (iPhone 6, 6S, SE)
- Ability to open amiibo files from Google Drive
- Italian language support
- Better error handling and user notifications
- Support for writing NFC tags on all compatible devices
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- Graceful handling for devices without NFC hardware
uCalculator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
NFC Reader / Writer
- Remove Ads$1.99
uCalculator
No in-app purchases
Questions
Is NFC Reader / Writer free?
Is uCalculator free?
Do NFC Reader / Writer or uCalculator have ads?
Which is updated more often, NFC Reader / Writer or uCalculator?
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