Comparison

Basic Calendar vs OT Tcu control

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

Head to head
About

Basic Calendar

Personalize your schedule with decorative notes, visual charts, and customizable widgets. Easily search for events, create drafts, and export your calendar views as PDFs or images. Enhance important days with a variety of free and purchasable stickers and highlighters.

Highlights
  • Monthly sticky notes
  • Event duration and count charts
  • Event search and draft creation
  • PDF and PNG calendar export
  • Emoji and sticker decorations
  • Customizable widgets
  • Month and week views
Features
Read full description

Your plans, with a personal touch. Bring your month, week, notes and calendar records together with Basic Calendar. • A little note on your month Move, resize and tilt sticky notes, adjust paper opacity, and display them in monthly widgets. One yellow note per month is free. Sticky Notes Plus is an optional one-time, non-consumable purchase for up to three notes per month and seven paper colors. It is not a subscription. All Access Pass and verified eligible previous supporters include this access. Existing notes merged through iCloud are preserved even when they exceed the creation limit or your current purchase access. • Find and understand your schedule Search event titles, locations and notes with date and calendar filters. See calendar names and time overlaps in daily and weekly lists. Create a new draft from an eligible event; invited, recurring and read-only events cannot be duplicated. • Turn a sentence into an event draft On supported devices, on-device AI interprets English, Korean, Japanese and Simplified Chinese sentences. Requires iOS 26 or later, an Apple Intelligence-compatible device, and available settings, model and language. AI can make mistakes: review the title, date, time and location, then save in the system event editor. Standard event creation remains available on unsupported devices. • Look back and export Explore monthly and yearly charts by scheduled duration, event count and sticker share, and compare with the previous month or year. Charts summarize calendar records, not actual activity, productivity or goal completion. All-day events are excluded from duration totals; overlapping durations are added separately. Export an A4 calendar as PDF or high-resolution PNG. Events are off by default; event notes, locations, links and sticky notes are excluded from exports. Lookback and export are free. • Personalize your app and Home Screen Choose five new color themes with separate system, light and dark modes. Use small, medium and large widgets and Korean or Chinese lunar dates. Korean lunar dates support Gregorian dates from January 1, 1900 through December 31, 2050. Emoji, the basic circle and red highlighter are free. Illustrated packs and additional hand-drawn styles and highlighter colors require optional one-time purchases. All Access Pass includes current and future decoration sets; verified eligible previous supporters receive the same access. Availability and local prices appear in the app. Events require calendar access; event syncing depends on device settings and your calendar service. Sticky notes, date decorations and saved calendar display sets have separate optional iCloud sync switches for the same Apple Account. The currently applied calendar selection and custom lookback titles stay on each device. Sticky-note sync is off by default; turning it off keeps downloaded notes on the device. Sticky note content and appearance sync; position and size stay on each device.

About

OT Tcu control

Features
Read full description

OT Control establishes a Bluetooth Low Energy (BLE) connection to Optimum Tracker’s Solar Tracker Control Unit (TCU) and provides a real-time overview of the tracker’s operational status. The application allows technicians to: Discover nearby TCU devices via Bluetooth Connect securely to a tracker control unit Monitor device status and operational values Configure essential system parameters Perform maintenance and diagnostics OT Control communicates with Digi XBee 3 devices via Bluetooth. These devices are connected to the tracker controller through a serial interface and expose operational data through a Modbus RTU interface. This application provides a safe and convenient interface for interacting with the tracker control system used in Optimum Tracker solar installations. OT Control is intended for use by trained technicians operating Optimum Tracker equipment.

Screenshots

Basic Calendar4 screens
OT Tcu control4 screens

Verdict

The call

The clearest difference is in-app purchases: OT Tcu control at none against Basic Calendar's 10. OT Tcu control also leads on iOS requirement (15.1 vs 17.0). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Basic Calendar sells 10 one-off in-app purchases. OT Tcu control asks for nothing beyond the download.

UpkeepUpdate frequency

Basic Calendar ships an update every 11 days, OT Tcu control every 9 days. The most recent releases landed on November 11, 2026 and November 9, 2026 respectively.

Scorecard2 real differences · 8 level
Basic Calendar versus OT Tcu control: the parameters behind the verdict, then further details
ParameterBasic CalendarOT Tcu control
PriceFreeFree
Rating4.8 (5 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 11 daysEvery 9 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS17.015.1 — better
Further details — not scored
Size20 MB25 MB
Age rating4+4+
Developerdotori kingOptimum Tracker

In-app purchases

10 purchases

Basic Calendar

One-time10
  • Warm Everyday$0.99
  • Simple Daily$0.99
  • Highlighter Set$0.99
Show 7 more
  • Pastel Days$0.99
  • Animal Friends$0.99
  • Vegetable Garden$0.99
  • School Days$0.99
  • Workday$0.99
  • Sticky notes plus$0.99
  • All Access Pass$5.99
None

OT Tcu control

No in-app purchases

Questions

Is Basic Calendar free?
Basic Calendar is free to download, with in-app purchases available.
Is OT Tcu control free?
OT Tcu control is free to download, with no in-app purchases.
Do Basic Calendar or OT Tcu control have ads?
Neither Basic Calendar nor OT Tcu control shows ads.
Which is updated more often, Basic Calendar or OT Tcu control?
Basic Calendar ships an update every 11 days, and OT Tcu control every 9 days. Most recently, Basic Calendar was updated on November 11, 2026 and OT Tcu control on November 9, 2026.

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