Effizency Field vs Shared Calendar .
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Effizency Field
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The effizency field mobile solution allows data collection on mobile device, using fully customized forms for each energy efficiency project, and automatically share the results with back-office systems. Main features: • Use mobile forms to collect information from the field in a digitalized process. • Accelerate energy services processes by implementing standardized procedures to assure quality in delivery to the end customer. • Integrate with effizency sales and track your energy efficiency projects details in both costs and timing. Several inputs are supported (text, numerical, dropdown, image attachments, email, phone, etc.), as well as different types of automatic integrations such as salesforce, google drive, among many others.
Shared Calendar .
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Our app is a shared calendar and planning tool that helps both individuals and teams organize tasks, goals, and schedules - whether for personal use or professional collaboration. You can create and manage color-coded calendars, set participant permissions (owner, editor, viewer), and arrange events with comments, reminders, and file attachments. Stay updated across all your devices with push notifications, powerful search filters, and secure data encryption. The free version includes up to two calendars and two invited participants, while the premium upgrade provides unlimited calendars, unlimited collaborators, and enhanced options for event pinning and file handling. Whether you're coordinating a group project or managing family plans, our app brings clarity and structure to your daily routine. This app offers auto-renewable subscriptions and in-app purchases: 1 week – Weekly – $4.99 1 month – Monthly – $12.99 1 year – Yearly – $39.99 Lifetime – $59.99 A subscription is required to access all features. You can cancel at any time through your device’s subscription settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://docs.google.com/document/d/1V9jQgqUSIRya68KBMDSYcgMeyDYGi4fyLm1cubAlTr4/edit?usp=sharing
Screenshots
Verdict
The clearest difference is in-app purchases: Effizency Field at none against Shared Calendar .'s 5. Effizency Field also leads on update cadence (monthly vs every 4 months). Shared Calendar .'s advantage is iOS requirement (13.0 vs 18.0). On price, ads and device support 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. Shared Calendar . sells 5 in-app purchases, starting at $4.99 per 7 days. Effizency Field asks for nothing beyond the download.
Effizency Field ships an update monthly, Shared Calendar . every 4 months. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.
| Parameter | Effizency Field | Shared Calendar . |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 171 MB | 76 MB |
| Age rating | 4+ | 4+ |
| Developer | Effizency | Oleksii Danylenko |
In-app purchases
Effizency Field
No in-app purchases
Shared Calendar .
- Weekly$4.997 Days
- Weekly-Trial3 Days trial$4.997 Days
- Monthly$12.991 Month
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- Yearly$39.991 Year
- Lifetime$59.99
Questions
Is Effizency Field free?
Is Shared Calendar . free?
Do Effizency Field or Shared Calendar . have ads?
Which is updated more often, Effizency Field or Shared Calendar .?
Other comparisons
