Comparison

Doodle Peek vs Codex by Lloyd Barnes

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

Head to head
About

Doodle Peek

This app allows you to perform mind-reading tricks by revealing a spectator's drawing or secret name. It offers two methods, one using the phone and another leveraging an Apple Watch for real-time peeking.

Highlights
  • Reveal spectator's drawings
  • Guess secret names
  • Two performance methods
  • Apple Watch integration
  • Real-time drawing display
  • Instructions via hidden tap sequence
Features
Read full description

A magic app that masquerades as a doodle app. Method 1 Ask your spectator to draw anything or write down the name of a person that only they would know. Ask them to remember the imprint of what they have drawn or written, and then to delete that drawing. Then ask them to draw just a couple of lines from the previous drawing, or if you had asked them to write the name of a secret person, ask them to draw that person. Once they have done that, ask them to hand the phone to you so you can try to figure out from their second drawing what they originally thought of. As soon as you get the phone, you will instantly know what they had originally drawn, and you will be able to use your showmanship to read their mind by somehow deciphering their second drawing. You will receive amazing reactions from this routine. For instructions on how to perform this trick, tap the eraser button 5 times within 5 seconds. Method 2 Simply install the accompanying Apple Watch app after installing the iPhone app (if not installed by Apple at the same time automatically) and then open the Doodle Peek watch app. In your Settings >> Display & Brightness >> Wake Duration setting, keep the screen awake for 70 seconds as this will allow you to peek for longer while the spectator is drawing. Turn the watch inwards on your wrist and hold something like a leaflet in your hand which you can read. This will divert the attention away from the fact that you are looking at your watch. Ask the spectator to draw whatever they want and to make it clear. As they draw, it will appear on your watch app in real time. Keep the watch awake if you have to, by turning the crown. But once the drawing has been completed, cover the watch with your sleeve, or exit the app discreetly. Now play with your words and reveal what they drew without even staring at the phone. This is a stunning way of reading their mind! The name of this app (Doodle Peek) should give you an indication of the method, while the app you see on the home screen will be named Doodle Mania.

About

Codex by Lloyd Barnes

This app offers a rapid day-of-week calculation and a reference tool for various card stacks. It's designed for practice and quick lookups with customizable feedback options for different environments.

Highlights
  • Day of week calculator
  • Speak dates for weekday display
  • Optional haptic feedback
  • Customizable tones and volume
  • Reference for common card stacks
  • High-contrast interface
Features
Read full description

Codex is a fast day-of-week calculator and card-stack reference tool designed for practice, rehearsal, and quick lookup. It provides accurate results with flexible output options so you can use it in different environments. Day of Week Calculator - Enter or speak a date and Codex displays the correct weekday. - Optional haptic feedback and optional sounds can be enabled for hands-free or silent operation. Customisation - Configure haptic strength, timing, and patterns. - Choose optional tones and volume. Card & Stack Tools - Quick reference and practice utilities for common stacks and arrangements (e.g., Mnemonica, Aronson, Si Stebbins, Eight Kings, and more). - High-contrast, readable interface for rapid lookup. Codex is built to be quick, reliable, and easy to use—whether you’re practicing at home or reviewing information on the go.

Screenshots

Doodle Peek3 screens
Codex by Lloyd Barnes4 screens

Verdict

The call

The clearest difference is price: Doodle Peek at $9.99 against Codex by Lloyd Barnes's $49.99. Doodle Peek also leads on rating (5.0 vs 4.0). On review sentiment, ratings volume, update cadence and ads 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

Doodle Peek costs $9.99 and Codex by Lloyd Barnes $49.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Doodle Peek holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Doodle Peek ships an update every 5 days, Codex by Lloyd Barnes every 9 days. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
Doodle Peek versus Codex by Lloyd Barnes: the parameters behind the verdict, then further details
ParameterDoodle PeekCodex by Lloyd Barnes
Price$9.99 — better$49.99
Rating5.0 (1 ratings) — better4.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings11
Update frequencyEvery 5 days — betterEvery 9 days
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, Apple Watch — betteriPhone
Requires iOS17 — better17.6
Further details — not scored
Size2 MB2 MB
Age rating4+4+
DeveloperLentrica SoftwareLloyd Barnes

Customer experience

Doodle Peek

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Codex by Lloyd Barnes

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Doodle Peek

No in-app purchases

None

Codex by Lloyd Barnes

No in-app purchases

Questions

Is Doodle Peek free?
Doodle Peek costs $9.99, with no in-app purchases.
Is Codex by Lloyd Barnes free?
Codex by Lloyd Barnes costs $49.99, with no in-app purchases.
Which has better reviews, Doodle Peek or Codex by Lloyd Barnes?
Doodle Peek is rated higher. Doodle Peek averages 5.0 out of 5 from 1 ratings, while Codex by Lloyd Barnes averages 4.0 from 1 ratings.
Do Doodle Peek or Codex by Lloyd Barnes have ads?
Neither Doodle Peek nor Codex by Lloyd Barnes shows ads.
Which is updated more often, Doodle Peek or Codex by Lloyd Barnes?
Doodle Peek ships an update every 5 days, and Codex by Lloyd Barnes every 9 days. Most recently, Doodle Peek was updated on October 25, 2026 and Codex by Lloyd Barnes on October 24, 2026.

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