MagicLock vs PyInstaller — protection vs packaging, and using both
A factual comparison: PyInstaller solves distribution, not protection. MagicLock artifacts stay encrypted wherever they travel — and the two tools compose well.
The verdict
PyInstaller solves distribution, not protection — its bundles unpack back to bytecode in minutes. MagicLock artifacts stay encrypted wherever they travel, and the two tools compose cleanly.
| MagicLock | PyInstaller | |
|---|---|---|
| Single-file executable for end users | Compiled tier: standalone builds | The design goal |
| Interpreter bundled | Compiled tier: yes | Yes / built in |
| Source/bytecode recoverable from the shipped file | Encrypted (.pya) or native code with a gate per module | Archive unpacks to .pyc |
| Device-bound licensing | Built in | — (not a goal) |
| Model / asset encryption | Per-device envelopes | Bundled in plaintext |
| Expiry, trials, kill switch | Yes / built in | Not offered |
| Price | Commercial | Free, open source |
- Single-file executable for end users
- MagicLockCompiled tier: standalone builds
- PyInstallerThe design goal
- Interpreter bundled
- MagicLockCompiled tier: yes
- PyInstallerYes / built in
- Source/bytecode recoverable from the shipped file
- MagicLockEncrypted (.pya) or native code with a gate per module
- PyInstallerArchive unpacks to .pyc
- Device-bound licensing
- MagicLockBuilt in
- PyInstaller— (not a goal)
- Model / asset encryption
- MagicLockPer-device envelopes
- PyInstallerBundled in plaintext
- Expiry, trials, kill switch
- MagicLockYes / built in
- PyInstallerNot offered
- Price
- MagicLockCommercial
- PyInstallerFree, open source
Based on public documentation as of the date below.
When PyInstaller alone fits better
- You need easy distribution and have no protection or licensing requirement — internal tools, free software, trusted environments.
When to add MagicLock
- The moment "anyone can unpack it" becomes a business problem: paid software, licensed seats, proprietary models, expiring pilots.
- Protect with MagicLock, then package with PyInstaller as usual — or let magiclock build --standalone do both in one step.
PyInstaller is the standard way to turn a Python application into a single executable your users can run without installing Python. It is mature, free, and very good at that job. It also states plainly what it is not: a protection tool. This page exists because the two are often confused — and because they actually work well together.
What PyInstaller does well
- One-file / one-folder distribution with the interpreter bundled — the classic "just send them an .exe" answer.
- Broad ecosystem support, hooks for tricky packages, cross-platform maturity.
- Free and open source.
Packaging is not protection
A PyInstaller bundle is an archive: the application's .pyc bytecode ships inside it, and freely available tools unpack it back to bytecode (and from there to quite readable source) in minutes. This is not a flaw — PyInstaller was never designed to keep secrets, and its documentation doesn't claim otherwise. But it means a bundled app offers approximately the same protection as shipping your .py files.
MagicLock artifacts are encrypted wherever the files travel: inside a PyInstaller bundle, on a USB stick, in a customer's backup. They become a running program only on devices you have authorized, verified fully offline at each run.
Better together
The two tools solve different layers, and they compose cleanly:
magiclock protectyour modules andmagiclock protect-modelyour weights — the protection layer.- Package the protected app with PyInstaller as usual — the distribution layer.
The bundle keeps PyInstaller's convenience; the code and models inside it keep MagicLock's encryption and device binding. Alternatively, magiclock build --standalone produces a self-contained native app directory in one step — protection and distribution from a single command.
See how protection works, or try the full flow free for 48 hours at pricing.
Facts last verified 2026-08
Product names and trademarks belong to their respective owners. Comparisons are based on public documentation; capabilities vary by version and edition — verify with each vendor for your use case.