Comparison

MAI TECH vs CoatInspect Pro

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

Head to head
About

MAI TECH

Features
Read full description

SIUI MAI TECH is an app to provide professional and timely support to worldwide NDT users. Download MAI TECH, you can access freely to tutorials and knowledge, that facilitate your daily work with SIUI's instruments. Online webinars & conferences are to offer the latest information, and technical exchanges with experts, enhancing the NDT skills in anytime and anywhere.

About

CoatInspect Pro

This app provides essential coating inspection calculations and reference guides for professionals working in environments with limited internet access. It offers tools for dry film thickness, dew point, ambient conditions, spread rate, and abrasive consumption, all functioning offline.

Highlights
  • DFT/WFT Calculator
  • Dew Point Calculator
  • Ambient Condition Check
  • Spread Rate Calculator
  • Surface Profile Calculator
  • Abrasive Consumption Calculator
  • Offline Reference Guides
Features
Read full description

CoatInspect Pro turns your iPhone into a complete coating inspection toolkit — DFT/WFT, dew point, ambient conditions, spread rate, surface profile, and abrasive consumption — all 100% offline, built specifically for AMPP and NACE certified inspectors who work where internet doesn't. Designed for AMPP and NACE certified professionals who work on offshore platforms, bridges, ships, pipelines, and industrial facilities where internet access is unreliable. Every calculation runs on-device with zero connectivity required. COATING CALCULATORS: • DFT/WFT Calculator — Convert between dry film thickness and wet film thickness using volume solids percentage. Supports both WFT→DFT and DFT→WFT modes. Essential for every coating application. • Dew Point Calculator — Calculate dew point temperature from air temperature and relative humidity using the Magnus-Tetens approximation. Instantly verify the 3°C delta T compliance requirement before applying coatings. • Ambient Condition Check — GO/NO-GO assessment for coating application. Checks delta T compliance (≥3°C required) and humidity limits (max 85%). Get instant pass/fail results in the field. • Spread Rate Calculator (Premium) — Calculate theoretical and practical spread rates from volume solids, target DFT, and transfer efficiency. Get paint consumption in L/m² and cost estimates per square meter. • Surface Profile Calculator (Premium) — Enter multiple blast profile readings, set min/max specifications, and get instant compliance verification with average depth calculation. • Abrasive Consumption Calculator (Premium) — Estimate abrasive usage for blast cleaning. Supports 8 abrasive types: steel grit, steel shot, garnet, aluminum oxide, glass bead, copper slag, coal slag, and silicon carbide. Includes cost estimation. REFERENCE GUIDES: • Coating Standards — Complete reference for SSPC-SP 1 through SP-12, ISO 8501, and NACE equivalents. Know the correct surface preparation standard for every job. • Abrasive Guide — 8 abrasive types with profile ranges, consumption rates, and characteristics. Compare options quickly in the field. • Surface Preparation Methods — Solvent cleaning, hand tool cleaning, power tool cleaning, blast cleaning, and water jetting specifications. BUILT FOR THE FIELD: • Calculation History — Last 50 calculations saved automatically. Review and compare past results across jobs. • Favorites — Mark frequently used calculations for instant access. • Share Results — Generate formatted text summaries to share with project managers and clients. • Unit Toggle — Switch between Metric (°C, microns, m², L) and Imperial (°F, mils, ft², gal) with one tap. • Dark Mode — Full dark/light mode support for any environment. • 100% Offline — No internet required. Every calculation and reference runs entirely on-device. Use it on the rig, on the bridge, or in the yard. FREE vs PREMIUM: Free includes DFT/WFT calculator, dew point calculator, ambient condition check, all reference guides, calculation history, favorites, and sharing. Premium unlocks spread rate calculator, surface profile calculator, abrasive consumption calculator, and all future tools as they are added. Built for coating professionals by people who understand the industry. CoatInspect Pro uses ASTM, SSPC, NACE, and ISO standard formulas — not guesswork. From CIP Level 1 to senior coating consultant, this is the inspection tool that belongs in your pocket. Terms of Use (EULA): https://coatinspectpro.volvoxmobile.com/terms Privacy Policy: https://coatinspectpro.volvoxmobile.com/privacy

Screenshots

MAI TECH4 screens
CoatInspect Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: MAI TECH at none against CoatInspect Pro's 2. MAI TECH also leads on device support (3 vs 1) and iOS requirement (12.3 vs 17.0). On price, update cadence and 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

Both are free to download. CoatInspect Pro sells 2 in-app purchases, starting at $1.99 per 7 days. MAI TECH asks for nothing beyond the download.

UpkeepUpdate frequency

MAI TECH ships an update every 3 weeks, CoatInspect Pro every 4 weeks. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 6 level
MAI TECH versus CoatInspect Pro: the parameters behind the verdict, then further details
ParameterMAI TECHCoatInspect Pro
PriceFreeFree
Rating—4.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 3 weeks — betterEvery 4 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.3 — better17.0
Further details — not scored
Size152 MB16 MB
Age rating17+4+
DeveloperShantou Institute of Ultrasonic Inst. Co., Ltd.Ersel Tarhan

In-app purchases

None

MAI TECH

No in-app purchases

2 purchases

CoatInspect Pro

Subscriptions2
  • Weekly Access$1.997 Days
  • Annual Premium1 Month trial$19.991 Year

Questions

Is MAI TECH free?
MAI TECH is free to download, with no in-app purchases.
Is CoatInspect Pro free?
CoatInspect Pro is free to download, with in-app purchases available.
Do MAI TECH or CoatInspect Pro have ads?
Neither MAI TECH nor CoatInspect Pro shows ads.
Which is updated more often, MAI TECH or CoatInspect Pro?
MAI TECH ships an update every 3 weeks, and CoatInspect Pro every 4 weeks. Most recently, MAI TECH was updated on October 25, 2026 and CoatInspect Pro on October 28, 2026.

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