Calendar app *DeepBlack vs DaCalculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calendar app *DeepBlack
Organize your schedule with a simple calendar, time, and to-do list. Add tasks and appointments with a touch, and visually distinguish events using customizable color-coding. This app offers a private way to manage your plans without needing to register.
- Daily task and appointment list
- Color-coded event decoration
- Customizable schedule creation
- Private, device-saved plans
- Simple touch interface
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Appointment book use as casual note. Organized plan in Calendar and Time and To-do list. Feature Overview Details [touch +] "Task" or "Appointment" added to "daily task list" [touch x] "Task" or "Appointment" deleted from "daily task list" [touch color bar] Calendar decorated by color Providing scheduling solutions in a few touch. Customization Calendar marks up by color that selected suitable for this calendar to define special event days. Appointment book app even not defined holiday according to the ordinary calendar. Can create schedule suite for your lifestyle. Also recommend to people that don't rest Saturday and Sunday. About appointment and task list date No need to register. You're secretly appointment or task list saved your device.
DaCalculator
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DaCalc is an all-in-one iPhone calculator designed for speed, clarity, and comfort. Use it for daily calculations, scientific operations, area conversion, and practical unit conversion in one clean experience. Features: Standard calculator for fast everyday math Scientific mode for advanced calculations Unit conversion including volume, weight, length, and temperature Area conversion with localized units (for example, tsubo and pyeong) Quick history for reusing previous results Multiple visual skins, including a Liquid Glass-inspired style Portrait-first interface optimized for one-handed use DaCalc helps you finish calculations quickly without clutter, confusion, or unnecessary steps.
Screenshots
Verdict
The clearest difference is ads: Calendar app *DeepBlack at none against DaCalculator's shown. Calendar app *DeepBlack also leads on device support (3 vs 1) and iOS requirement (11.0 vs 26.0). DaCalculator's advantage is update cadence (daily vs every 5 months). On price 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. Neither carries in-app purchases, so what you see is what you pay.
Calendar app *DeepBlack ships an update every 5 months, DaCalculator daily. The most recent releases landed on October 12, 2026 and October 28, 2026 respectively.
| Parameter | Calendar app *DeepBlack | DaCalculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 5 months | Daily — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 11.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 10 MB | 5 MB |
| Age rating | 17+ | 4+ |
| Developer | Bakerstreet Co., Ltd. | JayApp |
In-app purchases
Calendar app *DeepBlack
No in-app purchases
DaCalculator
No in-app purchases
Questions
Is Calendar app *DeepBlack free?
Is DaCalculator free?
Do Calendar app *DeepBlack or DaCalculator have ads?
Which is updated more often, Calendar app *DeepBlack or DaCalculator?
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