Comparison

Turing Machine Notepad vs P.I.

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

Head to head
About

Turing Machine Notepad

This digital notepad helps players of the Turing Machine board game track game state, manage deductions, and record test results. It offers an intuitive interface for managing multiple rounds and strategies, digitizing the gaming experience.

Highlights
  • Possibility elimination grid
  • Verification tracking table
  • Rich text editor with SF symbols
  • Auto-save functionality
  • Manage multiple rounds
  • Dynamic test row addition
Features
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Turing Machine Notepad is the essential app for players of the Turing Machine board game. Transform your iPhone into a smart digital notepad and track your game state with ease. KEY FEATURES - Possibility Elimination: Intuitive grid to cross out or circle shape and number combinations as you make deductions Verification Tracking: Dedicated table to record your tests and results from verifiers A through F, with visual checkboxes - Rich Notes: Advanced text editor with colored SF symbol insertion to annotate your strategies and hypotheses - Auto-Save: All your data is preserved instantly, resume your game anytime without losing progress WHY CHOOSE THIS APP? No more erasers and cross-outs on paper! Turing Machine Notepad digitizes your gaming experience by allowing you to: - Manage multiple rounds without confusion - Dynamically add test rows - Easily reset for a new game - Keep the screen active while you play OPTIMIZED INTERFACE Smooth navigation between the three main game sections, clean interface and design built for quick use during gameplay. Perfect for game nights, tournaments, or simply enhancing your Turing Machine experience! Note: This application is an unofficial support tool for the Turing Machine board game. The physical game is required to play.

About

P.I.

Features
Read full description

Official solo companion app for the P.I. board game, published worldwide by BoardM. In the deduction board game P.I., you become a detective on the hunt for clues: where the crime took place, who did it, and what weapon was used. Deduce all three correctly to solve the case. Choose Your Clues When you select a clue, the app provides a response: Spot Marker: The chosen clue is part of the final answer. Trace Marker: The answer is located in a region adjacent to the clue you pointed to. No Marker: The answer is located further away. Time is Your Score Checking 1 Clue Card: Adds 30 seconds Using a Detective Tile: Adds 50 seconds Incorrect Deduction Attempt: Adds a 100-second penalty Replay the Same Case When a game finishes, you can copy a 10-digit code. Entering this code on any device recreates the exact same case. Share the code with friends to compete under identical conditions! (Note: Games created via code input are not eligible for online ranking registration.) LEADERBOARD 14 locations, 12 suspects, 10 pieces of evidence. That makes 1,680 cases. A new leaderboard starts every month, and you can view this month, last month, or all time. Browsing needs no account. ■ Components Needed Use this app alongside the physical P.I. board game. You will need the game board, Suspect Tiles, Evidence Tiles, and one player color's worth of Trace Markers, Spot Markers, and Detective Tiles. All other components are handled by the app and do not need to be set up. Original board game design: Martin Wallace. P.I. is published by BoardM, which holds the worldwide publishing rights to the game. This is the official companion app, developed and distributed under that authorization. Every illustration, image and text string in the app was created by BoardM.

Screenshots

Turing Machine Notepad3 screens
P.I.4 screens

Verdict

The call

The clearest difference is update cadence: P.I. at every 3 weeks against Turing Machine Notepad's every 9 months. P.I. also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases 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

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

Turing Machine Notepad ships an update every 9 months, P.I. every 3 weeks. The most recent releases landed on October 5, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 8 level
Turing Machine Notepad versus P.I.: the parameters behind the verdict, then further details
ParameterTuring Machine NotepadP.I.
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 9 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size2 MB163 MB
Age rating4+12+
DeveloperNicolas LehovetzkiBoardM

In-app purchases

None

Turing Machine Notepad

No in-app purchases

None

P.I.

No in-app purchases

Questions

Is Turing Machine Notepad free?
Turing Machine Notepad is free to download, with no in-app purchases.
Is P.I. free?
P.I. is free to download, with no in-app purchases.
Do Turing Machine Notepad or P.I. have ads?
Neither Turing Machine Notepad nor P.I. shows ads.
Which is updated more often, Turing Machine Notepad or P.I.?
Turing Machine Notepad ships an update every 9 months, and P.I. every 3 weeks. Most recently, Turing Machine Notepad was updated on October 5, 2026 and P.I. on October 8, 2026.

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