Comparison

PreHeat vs API 653 helpmate

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

Head to head
About

PreHeat

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Background The need for and the temperature of preheat are dependent on several factors such as the chemical analysis, degree of restraint of the parts being joined, material thickness and mechanical properties. It is cautioned that the preheating temperatures listed below do not necessarily ensure satisfactory completion of the welded joint and requirements for individual materials within the P‐Number listing may have preheating more or less restrictive than this general guide. Applicable Code / Edition & Standards The preheat temperature of joining metal given by this app is in accordance with ASME Section I, VIII-1 and NBIC Part 3 2023 Edition. Utility This app determines provide the recommended preheat temperature of the joining metal. When welding two metal parts together, it is essential that the joining edges are free of contamination and moisture, preheating the joining face remove the moistures from the joining faces. Competitive Edge There is no app available in the market to determine preheat temperature of the joining parts quickly without using expensive designing software. This app provides a tool to quickly determine the recommended preheat temperature of joining parts. Target Audience This app targets fabricators, designers’ researchers, inspection agencies and QC who are involved in pressure welding. Non Consumable Subscription: You can download the app from App Store for free, however One time Non-Consumable subscription in-app-purchase is required before you can use any of the Tables of this app. Purchase can be made by going to the menu of the application. Terms and condition are also provided there. Terms of Use: This app follow Apple Standard Term of Use (EULA) more information about apple standard Licensed Application End User License Agreement can be found at https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

API 653 helpmate

Features
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"API 653 Helpmate" includes knowledge base required for the current Body of Knowledge for Aboveground Storage Tank Inspector certification, ensuring that users are up to date on the latest requirements. The app also offers features such as progress tracking and the ability to access questions from custom standard, allowing users to tailor their studying to their individual needs. These feature enables users to focus on areas where they need the most improvement and reinforce their understanding of important concepts. With "API 653 Helpmate," users can study anytime, anywhere, and feel confident in their exam preparation. The app assures similar success to all the candidates / inspectors / Engineers / beginners who believe in themselves and are ready to learn without any barriers. Expectations: - Help engineers, engineering students, and designers to quickly learn the engineering codes and standards used in the industry for petroleum and petrochemical industries. - A better understanding of API 653 certification examination questions and real-life exam experience. - latest API 653 Body of Knowledge (BOK) requirements - Improved confidence for the actual exam and higher chances of passing the exam. - Maximum success on your first attempt while minimizing the impact of exam preparation on your working schedule. - 24/7 access to learn at your own pace, place, and convenience. - Availability of various platforms that can be accessed from a tablet or smartphone. - Elimination of the dependency on expensive API 653 exam preparation classroom courses. - Questions from each category listed within the Body of Knowledge (BOK), including API 653, API 650, API RP 575, API RP 651, API RP 652, API RP 576, API RP 577, API RP 571, ASME Sec V, and Section IX. Limitations: - Actual exam questions as they change frequently, but there are ample frequently asked or similar questions that can be found within the app. - This app cannot give you the certification to become an authorized API inspector, but it can help engineers, engineering students, and designers quickly learn the engineering codes and standards used in the petroleum and petrochemical industries. This app is developed by authorized API Aboveground Storage Tank Inspectors who have adopted the systematic self-learning approach and succeeded without any classroom or online course. We believe in you and encourage you to start your learning journey with API 653 Helpmate today. Remember, every step you take will make you stronger, more skilled, more self-confident, and ultimately more successful. As Christopher Robin wisely said, "Always remember you are braver than you believe, stronger than you. For more information, please visit https://helpmateworld.com/about-us/

Screenshots

PreHeat4 screens
API 653 helpmate4 screens

Verdict

The call

The clearest difference is iOS requirement: PreHeat at 13.0 against API 653 helpmate's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. PreHeat sells 1 one-off in-app purchase and API 653 helpmate sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

PreHeat ships an update fortnightly, API 653 helpmate every 3 weeks. The most recent releases landed on September 15, 2026 and September 12, 2026 respectively.

Scorecard1 real difference Β· 5 level
PreHeat versus API 653 helpmate: the parameters behind the verdict, then further details
ParameterPreHeatAPI 653 helpmate
PriceFreeFree
Update frequencyFortnightly β€” betterEvery 3 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod, Mac β€” betteriPhone, iPad, iPod
Requires iOS13.0 β€” better16.0
Further details β€” not scored
Size4 MB33 MB
Age rating4+4+
DeveloperShabbir AhmedAustenite Pty Ltd

In-app purchases

1 purchases

PreHeat

One-time1
  • Non Consumable Subscription$3.99
1 purchases

API 653 helpmate

One-time1
  • API 653 Premium - 1 Year Access$49.99

Questions

Is PreHeat free?
PreHeat is free to download, with in-app purchases available.
Is API 653 helpmate free?
API 653 helpmate is free to download, with in-app purchases available.
Do PreHeat or API 653 helpmate have ads?
Neither PreHeat nor API 653 helpmate shows ads.
Which is updated more often, PreHeat or API 653 helpmate?
PreHeat ships an update fortnightly, and API 653 helpmate every 3 weeks. Most recently, PreHeat was updated on September 15, 2026 and API 653 helpmate on September 12, 2026.

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