Attendly by Coding Ladies vs Engineering Formulas
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Attendly by Coding Ladies
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Attendly by Coding Ladies is an attendance and event management app designed to make community participation simple and organized. The app supports both leaders and members, making it easy to manage, verify, and record attendance for trainings, meetings, and events. Key Features: QR check-ins for quick and secure attendance Leader tools for attendance verification and records Event listings for upcoming trainings and activities Notifications and updates for members Easy access across chapters and groups Attendly helps Coding Ladies Academy leaders and members stay connected, informed, and engaged ā all in one place. Stay organized. Stay involved. Attendly by Coding Ladies.
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 in-app purchases: Attendly by Coding Ladies at none against Engineering Formulas's 3. Engineering Formulas's advantage is update cadence (every 2 months vs every 6 months). On price, ads, device support and iOS requirement 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. Engineering Formulas sells 3 in-app purchases, starting at $4.99 per 7 days. Attendly by Coding Ladies asks for nothing beyond the download.
Attendly by Coding Ladies ships an update every 6 months, Engineering Formulas every 2 months. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.
| Parameter | Attendly by Coding Ladies | Engineering Formulas |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 months | Every 2 months ā better |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod ā better |
| Requires iOS | 15.1 | 15.1 |
| Further details ā not scored | ||
| Size | 37 MB | 45 MB |
| Age rating | 17+ | 12+ |
| Developer | Claude Amadu | Mobin Akhter |
In-app purchases
Attendly by Coding Ladies
No in-app purchases
Engineering Formulas
- Weekly Premium$4.997 Days
- Yearly Premium$29.991 Year
- Lifetime Access$54.99
Questions
Is Attendly by Coding Ladies free?
Is Engineering Formulas free?
Do Attendly by Coding Ladies or Engineering Formulas have ads?
Which is updated more often, Attendly by Coding Ladies or Engineering Formulas?
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