Salad Card Decks vs Engineering Formulas
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Salad Card Decks
Explore digital versions of popular coaching card decks, including Ericksonian Hypnosis and NLP. This free app offers sample cards and the option to purchase full decks or bundles for in-depth learning and application.
- Sample cards from popular coaching decks
- Digital versions of Ericksonian Hypnosis cards
- Digital versions of NLP Coaching cards
- In-app purchases for full decks
- Bundle purchase options for multiple decks
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2025 New version : updated FREE app with sample cards from the famous SALAD coaching cards series of best selling decks of Ericksonian Hypnosis, Irresistible Influence, NLP Coaching, NLP Belief Buster, Instant Wealth and Instant Happiness. In all you receive a full mixed card deck, and you can buy in-app the full version of each deck or a bundle of decks. And it's never the price that matters anyway, it's the learnings you get and how you put them into effect.
Engineering Formulas
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EngiRef is the all-in-one engineering reference app that works 100% offline. Access formulas, material properties, reference tables, and a powerful unit converter - all without internet connection. FORMULA LIBRARY Browse 140+ essential engineering formulas organized by discipline: ⢠Mechanical Engineering: stress, strain, torque, power, gear ratios, spring design ⢠Electrical Engineering: Ohm's law, AC/DC circuits, impedance, resonance ⢠Civil/Structural: beam deflection, Euler buckling, Manning's equation ⢠Thermodynamics: ideal gas law, Carnot efficiency, heat transfer ⢠Fluid Mechanics: Bernoulli, Reynolds number, Darcy-Weisbach ⢠Materials Science: Young's modulus, Poisson's ratio, fatigue analysis BUILT-IN CALCULATOR Enter your values and get instant results. Every calculation shows step-by-step solutions so you understand the process, not just the answer. Perfect for learning and exam preparation. MATERIALS DATABASE Access properties for 55+ engineering materials: ⢠Carbon steels (AISI 1018, 1045, 4140, 4340) ⢠Stainless steels (304, 316, 17-4 PH) ⢠Aluminum alloys (6061-T6, 7075-T6, 2024-T3) ⢠Titanium, copper, nickel alloys ⢠Plastics (ABS, HDPE, Nylon, PEEK, Delrin) ⢠Composites, concrete, and wood Compare up to 3 materials side-by-side with density, tensile strength, elastic modulus, thermal conductivity, and more. REFERENCE TABLES ⢠Bolt specifications: Metric M3-M36, SAE/Imperial sizes ⢠Pipe schedules: NPS dimensions and wall thickness ⢠Wire gauges: AWG 0000-40 with ampacity ratings UNIT CONVERTER Convert between 16 categories including length, pressure, temperature, force, energy, flow rate, and viscosity. Accessible from any screen via slide-over panel. PHYSICAL CONSTANTS Quick reference for 34 constants including speed of light, gravitational constant, Boltzmann constant, Avogadro's number, and more. QUIZ MODE Test your knowledge with flashcard-style quizzes. Track progress across all disciplines. Prepare for FE and PE exams. ADDITIONAL FEATURES ⢠Dark and light themes (follows system setting) ⢠Favorites to bookmark frequently used formulas ⢠Calculation history with timestamps ⢠Create and save custom formulas ⢠Export and share your data ⢠LaTeX formula rendering ⢠iPad-optimized layouts PRIVACY FOCUSED EngiRef collects zero personal data. No analytics, no ads. All your calculations and favorites stay on your device. We believe engineering tools should respect your privacy. Whether you are a student preparing for exams, a working engineer needing quick field reference, or a technician looking for material specs, EngiRef puts essential engineering knowledge in your pocket. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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Verdict
The clearest difference is iOS requirement: Salad Card Decks at 12.0 against Engineering Formulas's 15.1. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Salad Card Decks sells 8 one-off in-app purchases and Engineering Formulas sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | Salad Card Decks | Engineering Formulas |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 32.0% of reviews | ā |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | ā |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 ā better | 15.1 |
| Further details ā not scored | ||
| Size | 27 MB | 45 MB |
| Age rating | 4+ | 12+ |
| Developer | Salad Seminars | Mobin Akhter |
In-app purchases
Salad Card Decks
- Instant Happiness - Full Deck$9.99
- Instant Wealth - Full Deck$9.99
- NLP Belief Buster - Full Deck$19.99
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- NLP Coaching Cards - Full Deck$19.99
- FULL Irresistible Influence$19.99
- Ericksonian Hypnosis - Full Deck$19.99
- The Language Bundle$59.99
- 6 Deck Bundle$79.99
Engineering Formulas
- Weekly Premium$4.997 Days
- Yearly Premium$29.991 Year
- Lifetime Access$54.99
Questions
Is Salad Card Decks free?
Is Engineering Formulas free?
Do Salad Card Decks or Engineering Formulas have ads?
Which is updated more often, Salad Card Decks or Engineering Formulas?
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