Mechanical Engineer vs Jiffy
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mechanical Engineer
This app provides over 300 essential mechanical engineering formulas across various domains. It allows users to calculate, save, compare, and share results, aiding in project optimization and decision-making. Users can access a limited number of calculations for free, with a subscription unlocking full functionality.
- Over 300 mechanical engineering formulas
- Covers diverse engineering domains
- Save and compare formula results
- Share calculation outcomes
- Intuitive and practical interface
- Regular updates based on user input
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MECHANICAL ENGINEER FORMULATOR – Elevate Your Engineering with Precision For the dynamic Mechanical Engineer and the proactive engineering student, MECHANICAL ENGINEER FORMULATOR stands as the definitive tool that merges practicality with ease of use. Navigate through your engineering challenges confidently with an app crafted for direct, intuitive interaction. Boasting a comprehensive collection of over 300 essential mechanical engineering formulas, MECHANICAL ENGINEER FORMULATOR actively supports a wide array of mechanical engineering domains: • Actuators & Bearings: Execute precision movements and manage loads with authority. • Belts & Boilers: Transmit power efficiently and generate steam reliably. • Brakes & Clutches: Apply stopping power decisively and control torque with finesse. • Elevators & Gears: Operate smoothly and transfer motions effectively. • Fluid Power & Heat Transfer: Control fluids masterfully and manage thermal dynamics skillfully. • Internal Combustion & Kinetic Energy: Generate power robustly and analyze motion with precision. • Metalworking & Plates: Shape materials skillfully and ensure structural integrity. • Plumbs & Power Plants: Direct fluid systems confidently and produce energy proficiently. • Refrigeration & Shafts: Cool systems effectively and rotate components seamlessly. • Springs & Vehicle Drive: Store energy reliably and propel vehicles powerfully. MECHANICAL ENGINEER FORMULATOR empowers you to save and compare formula results, enhancing decision-making for project optimization. Share your formula outcomes effortlessly, enabling seamless collaboration. Given the ever-advancing nature of engineering, we pledge to move forward together with you. If you are looking for a formula not yet featured, or desire an enhancement, just email us. We are committed to listening and incorporating your input into our forthcoming updates. MECHANICAL ENGINEER FORMULATOR is not just an app; it's an essential resource to achieve engineering excellence. MECHANICAL ENGINEER FORMULATOR places the full potential of precision engineering at your fingertips. MECHANICAL ENGINEER FORMULATOR is FREE to DOWNLOAD and view all of the formulas. Users are able to calculate five formulas for FREE. Purchase a subscription to calculate additional formulas. All subscriptions come with a 1-WEEK FREE TRIAL and SUPPORT Family Sharing.
Jiffy
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Jiffy is a fast, lightweight app for notes, tasks and reminders. Capture a thought in seconds by typing or speaking naturally. Jiffy helps turn quick input into clear notes, todos and reminders without the clutter of a bloated productivity system. Use Jiffy to: • capture notes fast • create tasks and todos • set reminders from natural language • save ideas before you forget them • see time-based items in your calendar • keep everything simple and easy to review Jiffy is built for quick personal planning: • errands • appointments • things to remember later • lightweight day-to-day organisation • voice or text capture on the go If your current notes app feels slow or overcomplicated, Jiffy gives you a calmer way to capture now and remember later.
Screenshots
Verdict
The clearest difference is in-app purchases: Jiffy at none against Mechanical Engineer's 3. Jiffy also leads on update cadence (fortnightly vs every 2 months) and iOS requirement (15.1 vs 17.6). On price, ads and device support 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
Both are free to download. Mechanical Engineer sells 3 in-app purchases, starting at $0.99 per month. Jiffy asks for nothing beyond the download.
Mechanical Engineer ships an update every 2 months, Jiffy fortnightly. The most recent releases landed on September 26, 2026 and September 19, 2026 respectively.
| Parameter | Mechanical Engineer | Jiffy |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (8 ratings) — better | — |
| Positive reviews | 30.8% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Every 2 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Historycentral.com | Paul Gerard McBrien |
In-app purchases
Mechanical Engineer
- Monthly Subscription7 Days trial$0.991 Month
- Pro Quarterly$0.993 Months
- Pro Yearly7 Days trial$2.991 Year
Jiffy
No in-app purchases









