Comparison

Stack Trainer vs Nibble

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

Head to head
About

Stack Trainer

This app provides a realistic card deck experience for close-up magicians to train their memory of card stacks. It offers various challenge modes and filters to aid learning and practice, with a focus on a clean, distraction-free interface.

Highlights
  • Realistic card deck simulation
  • Multiple mnemonic training approaches
  • Customizable stack filters
  • Lorrayne's peg words integration
  • Interactive quick-touch analyzer
  • Display and whisper modes
Features
Read full description

Stack Trainer forms part of a comprehensive suite of apps that dedicate to technical learning tools for Close-up magicians. Stack Trainer addresses those who are familiar with the concepts related to Aronson, Tamariz, Nikolas. If you know what these names relate to, and you apply the according techniques, then this app will help you stay tuned and inspired.  Stack Trainer provides a most realistic card deck experience. It sets the golden standard for mnemonic deck training. A radical slim design. Cycle through the logical phases of the challenges at hand. Name it the "virtual spectator" concept. Approaches: - Next Card: Sequentially displayed, name the next card - Each Card: Name each card's position in a shuffled stack - Each Position: Name each position's card in a shuffled stack - Get Position: Name the position of a given card - Get Card: Name the card at a given position - Next Suit: Name the distance to the next of the same suit - Wrong Card: Identify the one card that is displaced in the face-up spread stack - Missing Card: Find the missing card in the face-up spread stack - Spot: Spot a specific card in the face-up spread stack - Highest Card: Identify the high and low cards of a random sub-stack - Four of a Kind: Name the distance to the next of the same kind Filters: Filters can be set to reduce the actual stack to a substack of lower size addressing and supporting the gradual progress during the early learning phase of a stack. Filters also provide different perspectives onto a stack to inspire and engage expert users. These filters, applied to the chosen approach, can be set: - ranges 1-13, 14-26, 27-39, 40-52, and a custom range - pair and impair positions - red and black cards - any of the four suits - court and number cards Some Features: - Aronson, Tamariz and user defined stacks - Lorrayne's peg words for the 52 cards and 52 positions, plus 3 user defined sets - display and whisper modes - includes the quick-touch interactive analyser visualising the solution path and allowing for self imposed problem statements with decadic and tridecadic layouts - feedback driven development - feels almost like a true deck of cards. Practicing card magic you don't want no complicated, overloaded and distracting user interface. Less is more. - probably the most complete, and straightforward solution available. A card, the one downwards (or upwards), maybe its mates, maybe the next one of the same suit. Either on random walk, or deliberate choices on the complete map. Touch swipe, swipe. Swipe and again. To experience the look and feel of 'Stack Trainer' load the free 'Random Input' app available by this developer. Additional information: - License agreement - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ - Privacy policy - https://yeahgic.com/pge_PrivacyStack.htm

About

Nibble

Features
Read full description

Nibble helps you manage indulgent habits — not by quitting, but by understanding. Whether it’s snacks, cigarettes, weed, or screen time, Nibble helps you track your cravings and slowly build better timing between them. Start by logging every time you indulge. After a few days, turn on Moderation Mode — and let Nibble start helping you space things out, one decision at a time. Each habit appears as an altar. After every indulgence, it seals shut and starts a countdown. When the time is right, it opens again — signaling you're allowed to go for it. The more you wait, the longer it stays shut next time. See your gaps grow Watch your spacing improve with every decision. Nibble visualizes how much, how often, and how spaced your habits are — over days, weeks, and beyond. Customize for any habit Nibble works for whatever you’re trying to manage: weed, sugar, soda, social media, snacks, energy drinks — you name it. No guilt, just guidance Nibble doesn’t push you to quit. It helps you slow down, make smarter choices, and shift your patterns gradually — without shame or pressure. Lockscreen widgets and custom shortcuts Track your habits quickly with widgets and custom shortcuts — right from your home or lock screen.

Screenshots

Stack Trainer4 screens
Nibble4 screens

Verdict

The call

The clearest difference is price: Nibble at Free against Stack Trainer's $3.99. Nibble also leads on in-app purchases (none vs 2) and update cadence (every 5 days vs every 3 months). Stack Trainer's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 18.4). On 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

Nibble is free to download; Stack Trainer costs $3.99 up front. Stack Trainer sells 2 in-app purchases, starting at $1.99 per 3 months. Nibble asks for nothing beyond the download.

UpkeepUpdate frequency

Stack Trainer ships an update every 3 months, Nibble every 5 days. The most recent releases landed on August 28, 2026 and August 12, 2026 respectively.

Scorecard5 real differences · 5 level
Stack Trainer versus Nibble: the parameters behind the verdict, then further details
ParameterStack TrainerNibble
Price$3.99Free — better
Rating1.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 3 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better18.4
Further details — not scored
Size6 MB155 MB
Age rating4+17+
DeveloperRalph CosXO Pixels

In-app purchases

2 purchases

Stack Trainer

Subscriptions2
  • 3 Months Subscription7 Days trial$1.993 Months
  • Annual Subscription$2.991 Year
None

Nibble

No in-app purchases

Questions

Is Stack Trainer free?
Stack Trainer costs $3.99, and also offers in-app purchases.
Is Nibble free?
Nibble is free to download, with no in-app purchases.
Do Stack Trainer or Nibble have ads?
Neither Stack Trainer nor Nibble shows ads.
Which is updated more often, Stack Trainer or Nibble?
Stack Trainer ships an update every 3 months, and Nibble every 5 days. Most recently, Stack Trainer was updated on August 28, 2026 and Nibble on August 12, 2026.

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