Comparison

Contactor vs Chart Builder

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

Head to head
About

Contactor

This app connects HVAC technicians with local suppliers, offering real-time refrigerant pricing, appointment booking, and a community forum. It streamlines daily tasks for professionals by providing essential tools and information in one place.

Highlights
  • Live refrigerant pricing lookup
  • Supplier map & contact profiles
  • Easy appointment scheduling
  • HVAC technician forum
  • Tools, reminders & calculators
Features
Read full description

HVAC tools for the work in front of you. Compare listed refrigerant prices, find suppliers and keep your field information together in Contactor. CALCULATE WITH CLEAR INPUTS Open calculators for superheat, subcooling, airflow, static pressure, electrical values and unit conversions. See the inputs, units and results so you can review each calculation in context. Check assumptions and follow the equipment documentation for the job. FIND SUPPLIERS AND LISTED PRICES Browse nearby supplier information and compare published R-22 and R-410A quotes. Supplier coverage varies by location; listed prices and availability depend on the information provided and may change. Pickup requests are available only with participating suppliers that support bookings. Confirm details directly with the supplier. LEARN AND FIND REFERENCE MATERIAL School brings guided HVAC lessons, explanatory quizzes and EPA Section 608 practice questions. EPA material focuses on United States requirements; practice does not issue certification or replace an approved exam. The manual library shows model, region and revision details with source links; check that a document applies to your equipment. KEEP FIELD WORK ORGANIZED Use equipment records, visit drafts, readings, checklists and service notes in Field desk. Prepared offline copies require setup beforehand. Keep the details you need for a later visit together instead of relying on memory. ASK AND DISCUSS Optional AI Support can help structure a question about symptoms, models and readings. It requires a connection, relevant access and consent; answers can be wrong. The forum provides a place for questions and field discussions. BEFORE YOU START The interface shown is in English; some content may be available in other languages. A translated store listing does not mean every in-app screen or feature is translated. Optional paid features show available prices and terms before purchase. Use appropriate safety procedures and qualified professional judgment. Support: support@decodation.com Support: https://contactor-h-v-a-c-porta-monv1g.web.app/legal/support/ Privacy: https://contactor-h-v-a-c-porta-monv1g.web.app/legal/privacy/ Terms: https://contactor-h-v-a-c-porta-monv1g.web.app/legal/terms/

About

Chart Builder

Effortlessly generate professional charts using AI prompts or by selecting specific chart types. This app allows for easy data editing, visual comparison of datasets, and exporting creations as images. It's designed to simplify complex data visualization for everyone.

Highlights
  • AI prompt-driven chart generation
  • Manual chart type selection
  • In-app data editing
  • Tier maker functionality
  • Export charts as images
  • History and autosave
Features
Read full description

Generate Any Chart with AI Prompts Unlock the power of your data by simply typing a prompt. Our advanced chart AI instantly creates professional-grade charts tailored to your request. Need a scatter plot to show correlations, or a crisp bar graph for your presentation? Vizzy handles it all. You can also explicitly select your desired chart type to get the perfect diagram every time. It's like having a personal chart plotter in your pocket. Intuitive Features & Seamless Workflow Prompt-Driven Chart Generation: Just tell Vizzy what you want, and our chart AI will build it. It’s the easiest way to get from data to chart pic. Select Chart Types: Beyond AI generation, choose from a wide range of chart types to perfectly visualize your data app information. Edit Your Data: Easily modify or input your data directly within the app, ensuring your charts are always accurate and up-to-date. "Tier Maker" Functionality: Organize and compare data sets visually, making complex information digestible and clear. Export as Image: Save your high-quality chartpic creations as images, ready for presentations, reports, or sharing. History & Autosave: All your generated charts and data edits are automatically saved to your history, so you can revisit and refine them anytime. Visualizer for All: Whether you appreciate elegant diseño grafico or simply need to quickly visualize information, Vizzy makes complex data simple, without needing cumbersome graph paper. AI Chart Builder - Vizzy is more than just a chart maker; it's a powerful data app that puts professional-grade data visualization at your fingertips. Download Chart Builder - Vizzy today and transform your data into clarity! Условия использования: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Contactor4 screens
Chart Builder4 screens

Verdict

The call

The clearest difference is monetization model: Chart Builder at free with in-app purchases against Contactor's subscription. Chart Builder also leads on update cadence (weekly vs every 7 months) and ratings volume (23 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. Contactor sells 2 in-app purchases, starting at $9.99 per month and Chart Builder sells 2 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Contactor against 5.0 for Chart Builder. That said, the two scores are not equally well evidenced: Chart Builder has 23 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Contactor ships an update every 7 months, Chart Builder weekly. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
Contactor versus Chart Builder: the parameters behind the verdict, then further details
ParameterContactorChart Builder
PriceFreeFree
Rating5.0 (2 ratings)5.0 (23 ratings)
Positive reviews100.0% of reviews—
Number of ratings223 — better
Update frequencyEvery 7 monthsWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0.0 — better15.3
Further details — not scored
Size107 MB54 MB
Age rating4+4+
DeveloperDECODATIONILYA BOIKA

Customer experience

Contactor

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Chart Builder

All ratings26 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Contactor

Subscriptions2
  • Contactor HVAC App: Monthly$9.991 Month
  • Contactor HVAC App: Annual$59.991 Year
2 purchases

Chart Builder

Subscriptions2
  • Weekly3 Days trial$7.997 Days
  • Annual3 Days trial$29.991 Year

Questions

Is Contactor free?
Contactor is free to download, with in-app purchases available.
Is Chart Builder free?
Chart Builder is free to download, with in-app purchases available.
Which has better reviews, Contactor or Chart Builder?
Contactor and Chart Builder are both rated 5.0 out of 5 on the App Store, from 2 and 23 ratings respectively.
Do Contactor or Chart Builder have ads?
Neither Contactor nor Chart Builder shows ads.
Which is updated more often, Contactor or Chart Builder?
Contactor ships an update every 7 months, and Chart Builder weekly. Most recently, Contactor was updated on October 24, 2026 and Chart Builder on October 24, 2026.

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