Stack Trainer vs DeviceShelf
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Realistic card deck simulation
- Multiple mnemonic training approaches
- Customizable stack filters
- Lorrayne's peg words integration
- Interactive quick-touch analyzer
- Display and whisper modes
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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
DeviceShelf
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DeviceShelf shows you every device on your network — what it is, what it exposes, and whether it's a risk. No account, no telemetry, no hidden cloud. Your network data stays on your device. WHAT YOU GET • See every device: name, vendor, type, IP and open ports, discovered over Bonjour and port probing. • Security at a glance: a risk score with plain-language findings — open Telnet, exposed SMB, weak defaults, aging TLS certificates, known CVEs. • Diagnostics that answer real questions: ping, speed test, DNS lookup, and your public IP and ISP. • Ask the built-in assistant about your network in plain language. Bring your own AI key — nothing is sent unless you turn it on. • Watch devices come and go, with per-device uptime. PAIR WITH YOUR COMPUTER OR SERVER iOS limits how deeply an app can scan a network. Connect to DeviceShelf on your Mac or PC, or to a 24/7 DeviceShelf server, and this app pulls the full inventory — every device's vendor, name and MAC — plus its security report and timeline. One license covers desktop, server and mobile. PRIVATE BY DESIGN No sign-up. No tracking. Nothing leaves your device unless you enable an optional feature. License checks work offline. OPTIONAL AI, CLEAR CONSENT If you configure a cloud AI provider, DeviceShelf asks before sending anything. The consent screen shows the provider, endpoint, and exact data categories first: your question or selected network/device signals such as IP addresses, pseudonymised MAC addresses, host/device names, vendors, open ports, service banners, certificate names, OS hints and security findings. Local providers such as Ollama do not need cloud consent. Try it free for 7 days. One-time purchase, no subscription.
Screenshots
Verdict
The clearest difference is price: DeviceShelf at Free against Stack Trainer's $3.99. DeviceShelf also leads on update cadence (every 3 days vs every 3 months). On ads, in-app purchases, device support and iOS requirement 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
DeviceShelf 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 and DeviceShelf sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Stack Trainer ships an update every 3 months, DeviceShelf every 3 days. The most recent releases landed on August 28, 2026 and September 25, 2026 respectively.
| Parameter | Stack Trainer | DeviceShelf |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 3 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | Ralph Cos | Christof Müller |
In-app purchases
Stack Trainer
- 3 Months Subscription7 Days trial$1.993 Months
- Annual Subscription$2.991 Year
DeviceShelf
- DeviceShelf Mobile$17.99
- DeviceShelf Complete Upgrade$34.99
- DeviceShelf Complete$49.99
Questions
Is Stack Trainer free?
Is DeviceShelf free?
Do Stack Trainer or DeviceShelf have ads?
Which is updated more often, Stack Trainer or DeviceShelf?
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