Google Calendar vs ESPic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Google Calendar
This app helps you manage your schedule and events efficiently. It automatically adds appointments from Gmail, supports multiple calendars, and offers customizable views and widgets. Collaborate with others by sharing calendars and integrating with Google Meet.
- Automatic event import from Gmail
- Multiple calendar support (Google, Exchange, iCloud)
- Shared calendars for collaboration
- Customizable views (day, week, month)
- Task management alongside events
- Widgets and Apple Watch complications
- Google Meet integration
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The official Google Calendar app helps you stay organized and plan your day with easy event creation, multiple calendars, customizable views, widgets, and tasks. With Google Calendar, you can: • Get events automatically added to your Calendar from Gmail, including flight, hotel, concert, and restaurant reservations. • Go from using Calendar on your iPhone, iPad, or Apple Watch to your computer without missing a beat when you’re logged into the same Google account. • Consolidate and view Google Calendar events side-by-side with other calendars on your device, including Exchange and iCloud. • Keep family, friends, and colleagues in the loop with shared calendars, so they can view, add, or modify events. • Quickly switch between month, week, and day views. • Stay on top of to-dos by creating and managing tasks alongside your events in Calendar. • Personalize your Google Calendar with light or dark mode or by color-coding your events • Always know what's next while on the go with Google Calendar on Apple Watch by customizing your watch face with Calendar complications or adding widgets. Google Calendar is part of Google Workspace, allowing you and your team to easily connect, create, and collaborate across all your favorite Google tools. You can: • Collaborate in a hybrid work environment by adding a Google Meet video call to an Calendar event • Get access to professional booking pages to easily book clients and customers*. • Schedule meetings with teammates by checking their availability or layering their calendars in a single view • Add your working location to your calendar to make it easier for your teammates to schedule meetings with you*. • Keep everyone on track for a meeting by attaching meeting notes, pre-read materials, and other documents directly to a calendar event. • Use Google Calendar with confidence knowing it’s supported by Google’s enterprise-level privacy, user safety and data security. * Requires a Google Workspace or Google One AI Premium subscription
ESPic
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ESPicは、ESP32デバイスをiPhone・iPadからリモートで監視・制御できるIoT制御システムです。 【主な機能】 ■ リレー制御 スマホからワンタップでリレーのON/OFFを切り替え。離れた場所の機器を遠隔操作できます。 ■ センサー監視 温度・湿度などのセンサーデータをリアルタイムで確認。履歴グラフで変化を把握できます。測定データの出力も可能。 ■ スケジュール 通常のタイマーはもちろん、日付や曜日指定ができ、自動でリレーを制御。毎日の定型作業を自動化できます。 ■ トリガー センサー値が設定した条件を満たすと、自動でリレーを制御。例えば「温度が30℃を超えたら換気扇ON」といった自動化が可能です。 ■ アラート通知 センサー値が閾値を超えるとプッシュ通知でお知らせ。異常をすぐに検知できます。 ■ デバイス共有 チームメンバーを招待して、1台のデバイスを複数人で管理できます。 ■ CSVエクスポート センサーログ・操作ログ・アラートログをCSVファイルで書き出し。NumbersやExcelで開いて、分析・レポート作成・記録管理にご活用いただけます。 【ご利用に必要なもの】 ・ESP32デバイス(ESPic対応ファームウェア導入済み) ・WiFi環境 【サブスクリプション】 無料プランでも基本機能をご利用いただけます。より多くのデバイス・ピン・センサーを管理したい場合、またはCSVエクスポート機能をご利用いただく場合は、有料プランをご検討ください。 【利用規約・プライバシーポリシー】 利用規約: https://espic.io/terms プライバシーポリシー: https://espic.io/privacy
Screenshots
Verdict
The clearest difference is chart position: Google Calendar at #18 against ESPic's unranked. On price, update cadence, 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. Google Calendar sells 8 in-app purchases, starting at $0.89 per month and ESPic sells 6 in-app purchases, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.
Google Calendar ships an update weekly, ESPic every 6 days. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.
| Parameter | Google Calendar | ESPic |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (133K ratings) — better | — |
| Positive reviews | 37.5% of reviews | — |
| Number of ratings | 133K — better | — |
| Update frequency | Weekly | Every 6 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Best chart rank | #18 — better | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 265 MB | 24 MB |
| Age rating | 4+ | 4+ |
| Developer | Satoshi Nishizuka | |
Bugs and requests
Google Calendar
Reported bugs
3 issues- Events not syncing properly between app and web versions
- Incorrect time zone changes for events
- New events automatically added to wrong calendar
Requested features
5 requests- Allow recurring events on specific days (e.g. 2nd Wednesday of the month)
- Add ability to set reminders for event end times
- Integrate with more email/calendar providers beyond Gmail
- Provide more customization options for event colors and icons
- Display the current date on the app icon
ESPic
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Google Calendar
- 30 GB$0.891 Month
- 100 GB1 Month trial2 variants$1.991 Month
- 100 GB$1.991 Month
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- 200 GB2 variants$2.991 Month
- 200 GB1 Month trial$2.991 Month
- Google AI Plus (2 TB)1 Month trial$9.991 Month
- Google AI Plus (2 TB)$9.991 Month
- 100 GB1 Year trial$19.991 Year
ESPic
- Light$29.991 Month
- Standard$49.991 Month
- Pro Annual$99.991 Year
Show 3 moreShow fewer
- Pro$119.991 Month
- Light Annual$299.991 Year
- Standard Annual$499.991 Year









