SmartCalculation_rjfv2 vs Sky107
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SmartCalculation_rjfv2
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Smart calculation: My App provides many unique calculations you can not find elsewhere. (see the 10 screenshots isubmitted). For example (1) Design a container with the minimum surface (for saving carton) (2) Solution of an universal equation F(x)=0, ((3) Calculation of 2D to 8D arithmetical matrix, (4) Maximum loading pattern. (5)Enter Date/Time to o btain time interval and decay calculation of radioactivity Evolution to all traditional calculators! Calculation is done as soon as entering the mathematic expression. Greatly time saving! 6 consecutive auto-calculating fields are combined as a calculating matrix finishing a rather complicated calculation in 10 seconds instead of 2 minutes by other calculating tools. It provides also all fundamental calculations for school, university, engineering, and scientific research, and offering some unique functions mentioned above: General calculation : 1. + - x / , power, root, exponent. 2. Solutions of equation Ax² + Bx + C = 0: Enter coefficients A,B and C, the solutions are automatically calculated. 3. Calculation of triangle: Enter lengths of side A and B, and angle A^B. The length of side C is automatically calculated. Practical calculation : 1. Credit simulation: Enter amount, term and annual interest rate. The monthly installment is calculated. Simulation of amortization in 2 terms is available. 2. Unique function for carton saving: Enter shape (box or cylinder), dimension and required number of the charge units (goods) to design a container with the minimum surface. 3. Unique function-Maximum loading pattern: Enter shape (box or cylinder), dimension of the charge units, and dimension of the pallet. Calculate the maximum number of charge units which can be loaded into the pallet. Show the maximum loading pattern. Scientific calculation : 1. Denary / natural logarithm, sine, cosine, tangent, arc sine/cosine/tangent, hyperbolic sine/cosine/tangent, compound function, calculation relevant to date-time such as decay of a radioactivity. 2. calculation of mathematical matrix (dimension 2 to 8), 3. Chart of polynomial P(x) (max. order 8) and solution of equation P(x) = 0. 4. Chart of F(x) and solution of equation F(x) = 0. F(x) may be any basic function listed in (1) or compound of the basic mathematical functions.
Sky107
This app provides a focused study tool for pilots preparing for the FAA Part 107 Remote Pilot Knowledge Test. It covers the official curriculum with structured lessons, flashcards, and practice exams to ensure comprehensive preparation.
- 13-chapter structured course
- Flashcard deck with mastery tracking
- 60-question practice exam
- FAA reference links
- Progress tracking
- Offline functionality
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Sky107 is the most focused study tool for pilots preparing for the FAA Part 107 Remote Pilot Knowledge Test. Every feature is built around the official FAA curriculum so you study exactly what the exam covers — nothing more, nothing less. **Structured 13-Chapter Course** Work through all Part 107 topics in order: airspace classification, weather, loading and performance, emergency procedures, crew resource management, and more. Each chapter combines clear explanations with a graded quiz so you can confirm your understanding before moving on. **Flashcard Deck with Mastery Tracking** Swipe right on cards you know, left on cards you're still learning. Sky107 remembers your progress and lets you filter by chapter or category so you can focus your review sessions on the topics that need the most work. **60-Question Practice Exam** Simulate the real FAA test with a timed 60-question exam that mirrors the official topic distribution. Detailed results show your score by category, helping you identify exactly where to study more. **FAA Reference Links** Quick access to the official FAA documents you need: the Part 107 regulation text, the Aeronautical Information Manual, airspace maps, and the official study guide — all in one place. **What you get:** • 13 structured lessons covering the complete FAA Part 107 syllabus • Swipeable flashcard deck with per-card mastery tracking • 60-question timed practice exam with category-level results • Curated FAA reference links (AIM, Part 107 rule text, study guide) • Progress tracking across all chapters and study sessions • No account required — everything works offline Whether you're preparing for your first commercial drone certification or refreshing your knowledge for a recurrent test, Sky107 keeps you focused on the material that matters.
Screenshots
Verdict
The clearest difference is update cadence: Sky107 at every 2 weeks against SmartCalculation_rjfv2's monthly. SmartCalculation_rjfv2's advantage is iOS requirement (8.0 vs 26.2). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
SmartCalculation_rjfv2 ships an update monthly, Sky107 every 2 weeks. The most recent releases landed on September 23, 2026 and October 7, 2026 respectively.
| Parameter | SmartCalculation_rjfv2 | Sky107 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Monthly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 8.0 — better | 26.2 |
| Further details — not scored | ||
| Size | 36 MB | 69 MB |
| Age rating | 4+ | 4+ |
| Developer | REMI FANG | Aliaksandr Kharevich |
In-app purchases
SmartCalculation_rjfv2
No in-app purchases
Sky107
No in-app purchases







