Comparison

StelaClock vs Quick Date & Time Calc

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

Head to head
About

StelaClock

Discover the Mayan calendar and number system with this educational clock app. It displays the current time and date using Mayan glyphs and a Base 20 notation, offering a unique way to experience ancient Maya culture.

Highlights
  • Mayan calendar display
  • Mayan number system
  • Vigesimal (Base 20) notation
  • Sophisticated calendar converter
  • Mayan glyph numerals
  • Daily use clock
Features
Read full description

Explore the world of the Mayan calendar — and keep a beautiful day clock for everyday curiosity. StelaClock is a modern rebuild of the classic Mayan-inspired clock: a living Tzolk’in wheel for today, Long Count and Haab alongside it, and a Gregorian → Mayan date converter. Educational and contemplative — not fortune-telling. No account. No subscription. Everything runs on your iPhone. TODAY — YOUR LIVING CLOCK • See today’s day sign, tone, and glyph on a multi-ring Tzolk’in wheel • One-line energy for the day — gentle reflection, not a full reading engine • Current Cycles show Long Count place values (bak’tun · k’atun · tun) in progress • Day tones use classic bar-and-dot Mayan numerals • The highlighted kin (sign + tone) changes once per local calendar day at midnight • The gentle wheel spin is decorative only — hours and minutes do not advance the calendar CONVERT — ANY DATE • Pick a Gregorian date • Instant Tzolk’in (sign + tone), Haab, Long Count, and Calendar Round • Copy or Share results for notes, travel, or study • Convert historical dates too — including milestones such as the bak’tun completion of December 21, 2012 — as calendar history, not a live countdown EXPLORE — MOVE THROUGH THE CYCLE • Step day by day or jump ±13 (Wavespell) and ±260 (full Tzolk’in round) • Ring, timeline, and grid views of the same selected date • Optional Haab and Long Count labels, plus why the date matters (trecena, year bearer, night lord) PROFILES — LIGHT & LOCAL • Save up to 30 people with birth dates • Birth signature, upcoming alignment / return days, and optional mood history • Data stays on your device PRIVATE BY DESIGN • No login, no cloud account, no ads SDK • Optional daily reminder via Apple’s local notifications (you choose the time) • Themes: Mystic, Minimal, and Stone FOR LEARNING AND REFLECTION StelaClock uses classical Mayan calendar math (GMT correlation 584283). The Long Count uses the Maya’s modified base-20 (vigesimal) place values — shown as readable cycle fields, not a digital hours-and-minutes wall clock. Results can differ from other apps or traditions. Content is educational and entertainment — not medical, financial, legal, or professional advice, and not a substitute for living cultural teaching. Apple Watch and widgets are planned for a later update — not included in this release. Privacy Policy: https://mayanchart.com/privacy Terms of Use: https://mayanchart.com/terms Support: support@mayanchart.com

About

Quick Date & Time Calc

Read full description

Easily calculate date, time, age, business days, and more—all in one powerful app.Whether you're planning an event, tracking a deadline, or just curious about your exact age, Date & Time Calculator. Key Features: · Date Duration Calculator:Calculate the number of days between two dates instantly. · Age Calculator:Find your precise age in years, months, and days. · Countdown Calculator:Count down to birthdays, holidays, and important deadlines. · Add/Subtract Days:Easily adjust any date by adding or subtracting days. · Business Days Calculator:Calculate working days, excluding weekends and optional holidays. · Time Duration Calculator:Measure the time between two timestamps in hours, minutes, and seconds. · Add/Subtract Time:Add or subtract hours, minutes, and seconds with ease. · Time Zone Converter:Easily convert time between any two time zones around the world. Whether you're scheduling across countries or coordinating with remote teams, get accurate conversions instantly. · Timestamp Converter Convert Unix timestamps to readable dates, and vice versa. Why choose Date & Time Calculator? · Intuitive interface, no learning curve · Precise and instant results · Perfect for professionals, students, and everyday use Download Quick Date & Time Calc and simplify all your date and time needs in seconds!

Screenshots

StelaClock4 screens
Quick Date & Time Calc4 screens

Verdict

The call

The clearest difference is price: Quick Date & Time Calc at Free against StelaClock's $3.99. Quick Date & Time Calc also leads on iOS requirement (13.0 vs 26.0). On ads, in-app purchases 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

Quick Date & Time Calc is free to download; StelaClock costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 8 level
StelaClock versus Quick Date & Time Calc: the parameters behind the verdict, then further details
ParameterStelaClockQuick Date & Time Calc
Price$3.99Free — better
Rating4.6 (5 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings5 — better—
Update frequencyEvery 29 months—
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPod
Requires iOS26.013.0 — better
Further details — not scored
Size7 MB39 MB
Age rating4+17+
DeveloperGary SagguFujian Huoli Site Network Technology Co., Ltd.

In-app purchases

None

StelaClock

No in-app purchases

None

Quick Date & Time Calc

No in-app purchases

Questions

Is StelaClock free?
StelaClock costs $3.99, with no in-app purchases.
Is Quick Date & Time Calc free?
Quick Date & Time Calc is free to download, with no in-app purchases.
Do StelaClock or Quick Date & Time Calc have ads?
Neither StelaClock nor Quick Date & Time Calc shows ads.

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