Contactor vs Chart Builder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Live refrigerant pricing lookup
- Supplier map & contact profiles
- Easy appointment scheduling
- HVAC technician forum
- Tools, reminders & calculators
Read full descriptionHide 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/
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.
- AI prompt-driven chart generation
- Manual chart type selection
- In-app data editing
- Tier maker functionality
- Export charts as images
- History and autosave
Read full descriptionHide 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
Verdict
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
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.
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.
Contactor ships an update every 7 months, Chart Builder weekly. Both last shipped on October 24, 2026.
| Parameter | Contactor | Chart Builder |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (23 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 | 23 — better |
| Update frequency | Every 7 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0.0 — better | 15.3 |
| Further details — not scored | ||
| Size | 107 MB | 54 MB |
| Age rating | 4+ | 4+ |
| Developer | DECODATION | ILYA BOIKA |
Customer experience
Contactor
Chart Builder
In-app purchases
Contactor
- Contactor HVAC App: Monthly$9.991 Month
- Contactor HVAC App: Annual$59.991 Year
Chart Builder
- Weekly3 Days trial$7.997 Days
- Annual3 Days trial$29.991 Year







