Comparison

CTS vs PreHeat

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

Head to head
About

CTS

Calculate leak test cycle times using leak rate, volume, and pressure drop. This tool also offers conversions for various units of volume, pressure, and leak rates. It's designed for professionals in leak testing.

Highlights
  • Leak test cycle time calculation
  • Leak rate, volume, pressure drop variables
  • Volume conversions
  • Pressure conversions
  • Bubble to leak rate conversions
  • Length and area conversions
Features
Read full description

Cincinnati Test Systems is a premier manufacturer of leak test instrumentation and turn-key systems. Our success is experience-based - supporting over 30,000 test applications around the globe. We developed this iPhone and iPad application to calculate leak test cycle time using leak rate, test volume, and pressure drop variables. It also provides conversions for volume, pressures, bubble to leak rate, length and area. CTS assumes no liability for this app. For all your leak test needs, contact CTS - Experts in leak testing solutions. www.cincinnati-test.com

About

PreHeat

Read full description

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/

Screenshots

CTS3 screens
PreHeat4 screens

Verdict

The call

The clearest difference is in-app purchases: CTS at none against PreHeat's 1. PreHeat's advantage is update cadence (fortnightly vs every 8 months). On price, ads, device support and iOS requirement 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. PreHeat sells 1 one-off in-app purchase. CTS asks for nothing beyond the download.

UpkeepUpdate frequency

CTS ships an update every 8 months, PreHeat fortnightly. The most recent releases landed on September 17, 2026 and September 15, 2026 respectively.

Scorecard2 real differences · 8 level
CTS versus PreHeat: the parameters behind the verdict, then further details
ParameterCTSPreHeat
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 8 monthsFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS13.013.0
Further details — not scored
Size2 MB4 MB
Age rating4+4+
DeveloperCincinnati Test SystemsShabbir Ahmed

In-app purchases

None

CTS

No in-app purchases

1 purchases

PreHeat

One-time1
  • Non Consumable Subscription$3.99

Questions

Is CTS free?
CTS is free to download, with no in-app purchases.
Is PreHeat free?
PreHeat is free to download, with in-app purchases available.
Do CTS or PreHeat have ads?
Neither CTS nor PreHeat shows ads.
Which is updated more often, CTS or PreHeat?
CTS ships an update every 8 months, and PreHeat fortnightly. Most recently, CTS was updated on September 17, 2026 and PreHeat on September 15, 2026.

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