Comparison

M.E.L.C. vs AMA Toolkit

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

Head to head
About

M.E.L.C.

This tool helps aircraft engineers calculate the expiration dates for airplane defects based on minimum equipment lists. It provides a clear overview of all critical dates and allows for customization of defect categories.

Highlights
  • Calculate defect expiration dates
  • Supports categories A, B, C, D
  • View all important dates at a glance
  • Customize defect categories
Features
Read full description

M.E.L.C. is a tool for the aircraft engineers to calculate the expire date (with Category A, B, C and D) of defected airplanes in accordance with the minimum equipment list. With one quick view all important dates are visible. And a function to customize all categories.

About

AMA Toolkit

Features
Read full description

AMA Toolkit is the ultimate offline-first technical reference suite and mathematical utility companion designed specifically for aircraft maintenance technicians, sheet metal mechanics, and avionic specialists. Built in alignment with standard aviation practices and FAA AC 43.13-1B guidelines, this premium utility brings a comprehensive collection of calculators, reference guides, and hardware decoders straight to your device—no internet connection required. Work with confidence even inside deep hangar basements, remote flight lines, or offline ramp environments. KEY FEATURES 1. ADVANCED AVIATION CALCULATORS (15-in-1 Suite) - Sheet Metal Bend Allowance: Instantly solve for Bend Allowance (BA), Setback (SB), and Bend Deduction (BD) to ensure crack-free, perfect flat layouts. - Fastener Grip Length Solver: Stack sheet metal thicknesses, washers, and nuts to compute the exact AN bolt dash number without risk of bottoming out. - Fraction-Decimal-Metric Converter: A fast, searchable database converting aviation fractions (1/64" to 1") to decimals and millimeters. - MEL Repair Deadline Calculator: Track Category A, B, C, and D repair intervals with calendar dates and custom day adjustments. - Fuel Weight & Volume Converter: Swiftly convert fuel quantities (Gallons, Liters, Pounds, Kilograms) for Jet A-1 and Avgas under temperature-adjusted densities. - Torque Adapter Offset Solver: Find target wrench torque settings when using extensions. - Flight Time Accumulator: Log flight hours and minutes with automatic base-60 mathematical carries. - Additional solvers for Rivet Length, Edge Distance, Tire Temp Correction, and more. 2. PRECISION METROLOGY SIMULATOR - Interactive Micrometer: Practice and verify 0.001" sleeve and thimble alignments with custom vector drawings and micro-step adjustments. - Interactive Vernier Caliper: Slide and view exact 0.001" line alignments with green-highlighted coincidence indicators. - Magnified Reference View: Tap any instrument for a crisp, high-resolution zoomed display to guarantee reading accuracy. 3. HARDWARE & RIVET GUIDES - Standard Hardware Decoder: Input standard AN part numbers to instantly break down size, length, thread pitch, and alloy specifications. - Hardware Dimensional Reference: Direct dimensional charts and head markings for aircraft bolts, nuts, and washers. - Rivet Specifications: Look up head markings, material codes, shear strengths, and installation rules for structural rivets. - Drill Bit Gauge Chart: Searchable lookup mapping gauge sizes (#80 to 1") to decimal equivalents. 4. SYSTEM FLOWS & PLUMBING - Fluid Line Color Codes: Identify hazard zones and system functions using official aircraft line tape symbols. - AN Fittings Guide: Match coupling nuts, sleeves, and unions based on material and color identifiers. - Corrosion Guide: High-utility classifications of surface, pitting, and galvanic corrosion. - Safety Wire Reference: Single-wire and double-twist wrap directions, count rules, and lockwire guidelines. - Electrical Tools: Ohm's law calculator and AWG wire size ampacity safety limits. COMPLIANCE & DISCLAIMER This application is designed as a pocket reference tool for educational and general workshop assistance. All calculations must be verified against current and effective aircraft-specific maintenance manuals (AMM) or structural repair manuals (SRM) before performing aircraft maintenance tasks. This application is intended for training and reference purposes only. It does not replace, supersede, or augment official aircraft manuals, airline standard operating procedures, or operator policies. Always refer to current and effective manufacturer documentation (AMM/FIM/MEL) for operational maintenance tasks. Optimize your hangar workflow and keep professional references at your fingertips with AMA Toolkit.

Screenshots

M.E.L.C.4 screens
AMA Toolkit4 screens

Verdict

The call

The clearest difference is price: M.E.L.C. at Free against AMA Toolkit's $1.99. M.E.L.C. also leads on device support (3 vs 1) and iOS requirement (13.0 vs 26.2). AMA Toolkit's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs every 18 months). On ads 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

M.E.L.C. is free to download; AMA Toolkit costs $1.99 up front. M.E.L.C. sells 1 one-off in-app purchase. AMA Toolkit asks for nothing beyond the download.

UpkeepUpdate frequency

M.E.L.C. ships an update every 18 months, AMA Toolkit fortnightly. The most recent releases landed on November 4, 2026 and November 10, 2026 respectively.

Scorecard5 real differences · 5 level
M.E.L.C. versus AMA Toolkit: the parameters behind the verdict, then further details
ParameterM.E.L.C.AMA Toolkit
PriceFree — better$1.99
Rating5.0 (1 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 18 monthsFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS13.0 — better26.2
Further details — not scored
Size6 MB4 MB
Age rating4+17+
DeveloperJanko EnkeERTUGRUL GULERYUZ

In-app purchases

1 purchases

M.E.L.C.

One-time1
  • Full version$0.99
None

AMA Toolkit

No in-app purchases

Questions

Is M.E.L.C. free?
M.E.L.C. is free to download, with in-app purchases available.
Is AMA Toolkit free?
AMA Toolkit costs $1.99, with no in-app purchases.
Do M.E.L.C. or AMA Toolkit have ads?
Neither M.E.L.C. nor AMA Toolkit shows ads.
Which is updated more often, M.E.L.C. or AMA Toolkit?
M.E.L.C. ships an update every 18 months, and AMA Toolkit fortnightly. Most recently, M.E.L.C. was updated on November 4, 2026 and AMA Toolkit on November 10, 2026.

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