Comparison

Next 10 vs NEC Mastery

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Next 10

This app helps children visualize and manipulate numbers to understand addition and multiplication. It offers interactive number blocks to solve math problems and build confidence in foundational math concepts.

Highlights
  • Interactive number block manipulation
  • Customizable math problems
  • Visual learning for addition
  • Visual learning for multiplication
  • Progressive difficulty levels
Features
Read full description

Bring addition and times tables to life by cutting and combining number blocks! Having trouble with homework? Instantly create custom number blocks for the exact problem. Is the 8 times table causing trouble? Practice by seeing how each result builds to the next. As a math teacher, I built an app that turns adding and multiplying into something children can see and manipulate. They build confidence as they get to understand abstract concepts through visual learning. Addition and multiplication are the foundation for other topics in math such as fractions, decimals and algebra. So it is vital that children have a clear understanding of how numbers work. Next 10 Math is free to download and has these features included: * Addition Levels 1-4 (Free) * Beginner levels 0-2 (Free) * Daily Custom Addition Questions (2 Free each day) * Times Tables 1-5 (Free) * Custom Multiplication Questions (2 Free) * For a one-time fee, users can unlock: * All Addition Levels (1-12) and Beginner Levels (0-11) * Unlimited Custom Addition questions * Multiplication through 12 x 12 * Unlimited Custom Multiplication questions

About

NEC Mastery

Prepare for electrician certification exams with over 8,000 practice questions and detailed explanations. Access a comprehensive quick reference guide and 20 professional NEC calculators for on-the-job use. Track work hours with a built-in log for state board submissions.

Highlights
  • 8000+ exam-style questions
  • 20 NEC calculators
  • Quick reference guide
  • Electrician hour log
  • 2023/2024 NEC Code updates
  • Customizable study syllabus
  • Mock tests and performance tracking
Features
Read full description

Developed with insights from licensed electricians and instructors nationwide, NEC Mastery has helped thousands pass their certification exams. Built around the 2023 NEC Code with 2024 updates. Prepare for your NEC Certification Exam with the most comprehensive study tool designed for Journeyman, Master Electricians, Electrical Contractors, Maintenance and Sign Electricians, Inspectors, and Examiners. NOW IN ENGLISH AND SPANISH Every question, calculator, reference table and help article is available in both languages. Terminology follows NFPA 70, Código Eléctrico Nacional — the official Spanish edition of the NEC — so what you study matches the exam you sit. Texas TDLR offers Spanish-language electrician exams through PSI against the 2023 NEC, which is exactly the edition this app is written to. Pick your language on first launch or change it any time in Settings; the whole app switches instantly, read-aloud voice included. Quick Reference Your pocket electrician's reference with 13 categories and 100+ items — all offline: • Electrical Formulas (Ohm's Law, AC/DC power, impedance, power factor) • Ampacity Tables (NEC 310.16, temperature derating, conduit fill adjustment) • Wire Properties & Insulation Types • Conduit Fill (EMT, RMC, PVC) & Conduit Bending • Box Fill Calculations • Voltage Drop Tables & Max Distance Lookups • NEMA Plug/Receptacle Configurations • Motor FLC Tables & Branch Circuit Sizing • Grounding (EGC & GEC Sizing, Electrode Types) • Transformer Formulas & OCPD Sizing • Electrical Symbols & Unit Conversions Bookmark any reference, search by NEC article number or keyword, and jump directly to related calculators. 20 NEC Calculators Professional-grade calculators with NEC code references: Ohm's Law, Power Converter, Wire Size, Ampacity Derating, Voltage Drop, Conduit Fill, Box Fill, Breaker Sizing, EGC Size, GEC Size, Motor Circuit, Motor Feeder, Lighting Load, EV Charger Load, Residential Load, Commercial Load, Transformer OCPD, Transformer Conductor, Cover Depth, and Fault Current. Electrician Hour Log Track your apprentice or journeyman work hours: • 12 work categories and 4 sector types • Dashboard with charts and goal tracking • PDF export for state board submissions • iCloud sync across all your devices Books & Tools Curated recommendations from working electricians — code books, test instruments, hand tools, and study guides. Exams Covered - Master & Journeyman Electrician: F16, F17, G17, T17 - Residential Electrician: F18, G18, T18 - Maintenance & Sign Electricians: F19, F21, F22, F23 - Electrical Contractor: F49 - Inspectors & Examiners: E1, E2, E3 Why Choose NEC Mastery - 8,000+ exam-style questions with answers, NEC references, and detailed explanations - Fully bilingual — English and Spanish, switchable at any time - 20 professional NEC calculators for on-the-job use - Quick Reference with 100+ items — ampacity, formulas, NEMA configs, and more - Electrician hour log with iCloud sync and PDF export - Covers the 2023 NEC Code with 2024 updates - Choose your own syllabus — customize down to each individual article - Mock tests and performance tracking to simulate real exams - Instant feedback mode with explanations as you practice - Dark mode and adjustable text size Study by Chapter 1 General · 2 Wiring and Protection · 3 Wiring Methods and Materials · 4 Equipment for General Use · 5 Special Occupancies · 6 Special Equipment · 7 Special Conditions · 8 Communications Systems Who Is This App For? Apprentices and licensed electricians, residential/commercial/industrial electricians, contractors, inspectors, safety managers, engineers, and field technicians. Privacy Policy: https://www.webrichsoftware.com/privacy.html EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Join thousands of electricians who have passed their NEC exams with NEC Mastery.

Screenshots

Next 103 screens
NEC Mastery4 screens

Verdict

The call

The clearest difference is ratings volume: NEC Mastery at 172 against Next 10's 6. NEC Mastery also leads on update cadence (fortnightly vs monthly) and device support (4 vs 2). On price, rating, ads and in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Next 10 sells 1 one-off in-app purchase and NEC Mastery sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Next 10 holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: NEC Mastery has 172 ratings behind it against 6, so its average is the more settled of the two.

UpkeepUpdate frequency

Next 10 ships an update monthly, NEC Mastery fortnightly. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Next 10 versus NEC Mastery: the parameters behind the verdict, then further details
ParameterNext 10NEC Mastery
PriceFreeFree
Rating5.0 (6 ratings) — better4.8 (172 ratings)
Positive reviews—80.0% of reviews
Number of ratings6172 — better
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS16.316 — better
Further details — not scored
Size48 MB127 MB
Age rating4+4+
DeveloperNext 10 Math LLCWebrich Software Limited

Customer experience

Next 10

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

NEC Mastery

All ratings165 ratings
Positive95.8%
Neutral2.4%
Negative1.8%
Written reviews10 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

In-app purchases

1 purchases

Next 10

One-time1
  • Next 10: Unlock All$5.99
4 purchases

NEC Mastery

Subscriptions4
  • Full Question Bank$9.991 Month
  • Full Question Bank$24.993 Months
  • Full Question Bank$39.996 Months
Show 1 more
  • Full Question Bank$59.991 Year

Questions

Is Next 10 free?
Next 10 is free to download, with in-app purchases available.
Is NEC Mastery free?
NEC Mastery is free to download, with in-app purchases available.
Which has better reviews, Next 10 or NEC Mastery?
Next 10 is rated higher. Next 10 averages 5.0 out of 5 from 6 ratings, while NEC Mastery averages 4.8 from 172 ratings.
Do Next 10 or NEC Mastery have ads?
Neither Next 10 nor NEC Mastery shows ads.
Which is updated more often, Next 10 or NEC Mastery?
Next 10 ships an update monthly, and NEC Mastery fortnightly. Most recently, Next 10 was updated on October 27, 2026 and NEC Mastery on October 24, 2026.

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