Comparison

Calendar app *DeepBlack vs Vaultzi

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

Head to head
About

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.

Highlights
  • Daily task and appointment list
  • Color-coded event decoration
  • Customizable schedule creation
  • Private, device-saved plans
  • Simple touch interface
Features
Read full description

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.

About

Vaultzi

Features
Read full description

Stop losing everything you save. Save links, screenshots, shopping finds, recipes, gift ideas, articles and more — all in one calm, safe place. No more forgotten tabs, messy bookmarks, overflowing camera rolls or moments where you can’t find something you saved. SAVE FROM ANYWHERE Save: • Links • Articles • Recipes • Screenshots • Products • Travel ideas • Gift ideas • Documents • Emails • Notes and ideas Save things whenever inspiration strikes — from links and screenshots to shopping finds and ideas. YOUR UNIVERSAL SHOPPING BASKET Save products from any store into one organised place. Track: • Wishlist items • Fashion finds • Home inspiration • Tech products • Gift ideas • Future purchases • Travel plans No more forgotten tabs or endless screenshots. AI ORGANISES EVERYTHING Vaultzi sorts your saves into smart categories like: • Shopping • Reading • Recipes • Travel • Gifts • Ideas • Home • Finance AI handles the organisation — you stay in control. NEVER FORGET WHAT MATTERS Gentle reminders bring saved things back at the right time, including: • Shopping lists • Gift ideas • Recipes • Reorders • Travel plans • Things to read later • Important documents Because saved shouldn’t mean forgotten. CHEERIO BIN Done with something? Swipe it into the Cheerio Bin. Items stay safely recoverable for 7 days before they disappear for good. VAULTZI PLUS Upgrade for more saves, advanced reminders and premium organisation. Monthly, annual and lifetime options are available. Terms of Use: https://vaultzi.app/terms

Screenshots

Calendar app *DeepBlack4 screens
Vaultzi4 screens

Verdict

The call

The clearest difference is in-app purchases: Calendar app *DeepBlack at none against Vaultzi's 3. Calendar app *DeepBlack also leads on iOS requirement (11.0 vs 15.1). Vaultzi's advantage is update cadence (every 2 days vs every 5 months). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Vaultzi sells 3 in-app purchases, starting at $6.99 per month. Calendar app *DeepBlack asks for nothing beyond the download.

UpkeepUpdate frequency

Calendar app *DeepBlack ships an update every 5 months, Vaultzi every 2 days. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Calendar app *DeepBlack versus Vaultzi: the parameters behind the verdict, then further details
ParameterCalendar app *DeepBlackVaultzi
PriceFreeFree
Rating4.5 (2 ratings) — better—
Number of ratings2 — better—
Update frequencyEvery 5 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS11.0 — better15.1
Further details — not scored
Size10 MB57 MB
Age rating17+4+
DeveloperBakerstreet Co., Ltd.Sortzi Ltd

In-app purchases

None

Calendar app *DeepBlack

No in-app purchases

3 purchases

Vaultzi

Subscriptions2
  • Vaultzi Plus Monthly$6.991 Month
  • Vaultzi Plus Annual$29.991 Year
One-time1
  • Vaultzi Plus Lifetime$79.00

Questions

Is Calendar app *DeepBlack free?
Calendar app *DeepBlack is free to download, with no in-app purchases.
Is Vaultzi free?
Vaultzi is free to download, with in-app purchases available.
Do Calendar app *DeepBlack or Vaultzi have ads?
Neither Calendar app *DeepBlack nor Vaultzi shows ads.
Which is updated more often, Calendar app *DeepBlack or Vaultzi?
Calendar app *DeepBlack ships an update every 5 months, and Vaultzi every 2 days. Most recently, Calendar app *DeepBlack was updated on November 2, 2026 and Vaultzi on October 31, 2026.

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