sudo vs SYSCALL
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
sudo
Enjoy a classic Sudoku experience with a vibrant twist, offering both color and number-based puzzles. Track your performance with detailed statistics and maintain your progress with streaks. This ad-free game provides a clean and engaging way to play.
- Color and number Sudoku puzzles
- Ad-free gameplay
- Progress tracking
- Streaks and statistics
- Supports iPhone and iPad
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Sudo is the best way to play sudoku. No ads, ever. With Sudo, you can play sudoku with colors or numbers. Track your progress with streaks and stats.
SYSCALL
Engage in a unique reverse-engineering and assembly optimization puzzle game set within a 1990s warez BBS. Write and debug assembly programs to crack software, patch code, and navigate a virtual network. Explore a private board with tools and community features.
- Reverse-engineering assembly puzzles
- Code tracing and patching
- Network hacking challenges
- Virtual BBS environment
- Assembly pixel art tool
- Chip-tune maker
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The mobile version of the SYSCALL: RING ZERO assembly puzzle game is here! This is our world now. The world of the electron and the switch. SYSCALL is a reverse-engineering and assembly optimization puzzle game inside a private 1990s warez BBS. You will be writing assembly programs, reading listings, tracing the machine, changing the code, and shipping the crack. READ THE CODE THAT RUNS Every CRACK release is a small SYSCALL CORE program. You are able to trace programs, inspect assembly instructions, get hints and watch registers move, in order to find the way to TRACE, CRACK and PATCH programs. FOUR WAYS TO HACK THE NETWORK CRACK: Read the listing, find the secret input key, and bypass the protection. PATCH: Fit the smallest fix into fixed edit slots, then run the test battery. WORM: Program a dynamic up to nine-core rack, route values across ports, and cut lines and cycles. SCOPE: Write firmware until the live trace locks onto the ghost signal. A PRIVATE BOARD WITH REAL TOOLS Dial in, pick a node on the NETWORK MAP, read the mail, check the notes, and work the releases. The board has PHILES that teach the SYSCALL CORE, crew messages, NFOs, greets, records, and side tools. CANVAS is a freeform assembly pixel toy. TRACKER is a four-channel chip-tune maker you can set as the board music.
Screenshots
Verdict
The clearest difference is rating: sudo at 5.0 against SYSCALL's 4.0. sudo also leads on price ($2.99 vs $7.99) and ratings volume (3 vs 1). SYSCALL's advantage is update cadence (every 11 days vs every 3 weeks). On ads, in-app purchases, monetization model and 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
sudo costs $2.99 and SYSCALL $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.
sudo holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.
sudo ships an update every 3 weeks, SYSCALL every 11 days. The most recent releases landed on October 5, 2026 and October 14, 2026 respectively.
| Parameter | sudo | SYSCALL |
|---|---|---|
| Price | $2.99 — better | $7.99 |
| Rating | 5.0 (3 ratings) — better | 4.0 (1 ratings) |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 3 weeks | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Arjun Mahanti | Chilling Moose OU |
Customer experience
sudo
SYSCALL
In-app purchases
sudo
No in-app purchases
SYSCALL
No in-app purchases
