Comparison

a vs NFC Developer App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

a

This app provides a local Unix terminal emulator for iOS devices, enabling users to run various Unix commands, edit files, and process data. It includes support for multiple programming languages and network utilities, with integration for iOS Shortcuts and multi-window functionality.

Highlights
  • Local Unix terminal emulator
  • Run Unix commands
  • File transfer (scp, curl)
  • Text editing (vim, ed)
  • Programming languages (Python, Lua, C)
  • Network utilities (ping, nslookup)
  • iOS Shortcuts integration
Features
Read full description

a-Shell is a complete local terminal emulator, allowing to run most Unix commands on your iOS device. You can transfer files using scp and curl, edit them with vim and ed, process them using grep, awk and sed. You can work with git repositories using lg2.  Most commands are compiled for iOS native Arm64 format, making them fast and well integrated with the BSD Unix that powers iOS/iPadOS. a-Shell includes Python, Lua, Perl, JavaScript, C, C++ for programming and TeX (texlive 2025, with Tikz and LuaTeX) for text processing. There are also multiple network utilities: nslookup, ping, whois, ifconfig... Type help for help, help -l to get the full list of commands. a-Shell can be controlled from Shortcuts: run commands in order, process files in a-Shell, get the results as text or files, transfer files to other apps... a-shell uses iOS 13+ “multiple windows” ability, so you can run multiple shells at the same time, with different commands, in different directories. You can edit a file in one window with vim and process it in the other with python. Compile your C or C++ programs to webAssembly using clang or clang++, and execute the resulting binary. A complete webAssembly SDK is included (WASI-libc). a-Shell is the complete version. If you need a smaller app, and you don't need a C compiler, a TeX engine, or numpy and matplotlib, there is a-Shell mini.

About

NFC Developer App

Features
Read full description

Program NFC tags with the dynamic URL feature. Supported tags: NTAG 424 DNA, NTAG 424 DNA TagTamper

Screenshots

a4 screens
NFC Developer App3 screens

Verdict

The call

The clearest difference is chart position: a at #21 against NFC Developer App's unranked. On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

a ships an update monthly, NFC Developer App every 3 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

Scorecard1 real difference · 10 level
a versus NFC Developer App: the parameters behind the verdict, then further details
ParameteraNFC Developer App
PriceFreeFree
Rating4.6 (570 ratings) — better—
Positive reviews78.4% of reviews—
Number of ratings570 — better—
Update frequencyMonthlyEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank#21 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size2.1 GB12 MB
Age rating17+12+
DeveloperNicolas HolzschuchArx Research

Bugs and requests

a

Reported bugs

3 issues
  • Toolbar buttons not accessible in portrait mode on some devices
  • Pasting from clipboard can insert unexpected characters
  • Sourcing certain script files causes crashes

Requested features

5 requests
  • Add support for package managers like Homebrew or APT
  • Implement more advanced shell features like job control and better tab completion
  • Integrate Git for version control
  • Allow installing additional packages and libraries
  • Improve clipboard and file management integration

NFC Developer App

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

a

No in-app purchases

None

NFC Developer App

No in-app purchases

Questions

Is a free?
a is free to download, with no in-app purchases.
Is NFC Developer App free?
NFC Developer App is free to download, with no in-app purchases.
Do a or NFC Developer App have ads?
Neither a nor NFC Developer App shows ads.
Which is updated more often, a or NFC Developer App?
a ships an update monthly, and NFC Developer App every 3 weeks. Most recently, a was updated on November 7, 2026 and NFC Developer App on November 3, 2026.

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