Pocket ARM

Pocket ARM — ARMv7 Simulator

Carry a complete ARM assembly development environment in your pocket.

Pocket ARM is a full ARMv7 UAL assembly simulator, designed for computer science students, embedded developers, and anyone who wants to understand how processors really work — one instruction at a time.

Learn ARM Assembly the Right Way

There's no better way to understand a processor than to watch it think. Pocket ARM lets you write ARM assembly, assemble it instantly, and step through execution instruction by instruction — watching registers change, flags flip, and memory update in real time.

A Professional Toolset in Your Hand

Full ARMv7 UAL assembler with label resolution and condition codes

All 16 general-purpose registers (R0–R15) with SP, LR, and PC clearly labelled

CPSR status register with live N, Z, C, V, I, F, and T flag display

Hex memory viewer with Text, Data, and Stack segment views

Breakpoints — tap any instruction in the disassembly to pause execution there

Step, Step N, Run, and Stop controls

Console output for SVC calls

Built for iPad and iPhone

On iPad, Pocket ARM presents a classic quad-pane layout — registers, source editor, disassembly, memory, and console all visible simultaneously.

Supported Instructions

MOV, ADD, SUB, MUL, AND, ORR, EOR, BIC, CMP, TST, LSL, LSR, ASR, LDR, STR, PUSH, POP, B, BL, BX, and the full set of ARM condition code suffixes — EQ, NE, LT, GT, LE, GE, and more.

Who Is It For?

Computer science and computer engineering students studying processor architecture

Embedded developers wanting a quick sandbox for ARM logic

Hobbyists and retro computing enthusiasts are curious about how RISC processors work

Anyone who has ever wondered what happens inside a chip