Comparison

StelaClock vs Calendar Clock

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

Calendar Clock

This app displays the current year, month, week, and time on a single screen with a clean design. It offers customizable theme colors and functions as a desk clock. The app disables device sleep mode while active.

Highlights
  • All-in-one screen display
  • Year, month, week, day, hour, minute, second
  • Switchable theme colors (dark, light, green, blue)
  • Disables device sleep mode
  • Acts as a desk clock
Features
Read full description

Time and date, beautifully together. Calendar Clock is a simple, elegant time-and-calendar app designed for iPhone and iPad. See the current time and the entire month at a glance, with a clean interface that stays out of your way. Features * Large digital clock — View the current system time clearly and instantly. * 24-hour or 12-hour format — Swipe across the clock to switch between 24-hour and AM/PM formats. * Monthly calendar — See the full month with the current year and month displayed above it. * Swipe through months — Swipe left or right on the calendar to move between months. * Today at a glance — Today's date is highlighted with a red circle. * Weekend highlighting — Saturdays and Sundays are displayed in red. * Multiple themes — Swipe up or down to change the screen theme. * Remembers your preferences — Your selected clock format and theme are preserved. * iPhone & iPad — Designed for both iPhone and iPad. Simple by design No complicated menus. No unnecessary controls. Just the time and the calendar, exactly when you need them. Calendar Clock — See time. See your day. Note that this application disables your device's sleep mode while running, so make sure you have enough battery life. *Important notice: Use the information recoded or functionality provided in / or generated with this application only as a rough indication, rough estimates or as a rough guide. Even though we do our best to provide you with confirmed information and tried-and-tested features, the accuracy and successful operation and performance of the application are NOT GUARANTEED by us. Users are strongly advised to confirm the information of their interest with other sources and not to ultimately rely on functionality and performance of this application. This application is provided “as is” and with all faults. You bear the risk of using it. We shall not be responsible or liable for any loss or damage of any kind incurred as a result of the use of functions or the content of this application. By using this application you are agreeing to these terms. If you do not agree to these terms do not use this application.

Screenshots

StelaClock4 screens
Calendar Clock4 screens

Verdict

The call

The clearest difference is review sentiment: StelaClock at 86% against Calendar Clock's 0%. Calendar Clock's advantage is price ($0.99 vs $3.99). On update cadence, ads, in-app purchases and monetization model 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

StelaClock costs $3.99 and Calendar Clock $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

StelaClock ships an update every 29 months, Calendar Clock every 41 months. The most recent releases landed on October 10, 2026 and October 15, 2026 respectively.

Scorecard2 real differences · 8 level
StelaClock versus Calendar Clock: the parameters behind the verdict, then further details
ParameterStelaClockCalendar Clock
Price$3.99$0.99 — better
Rating4.6 (5 ratings) — better—
Positive reviews85.7% of reviews — better0.0% of reviews
Number of ratings5 — better—
Update frequencyEvery 29 months — betterEvery 41 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.0 — better26.5
Further details — not scored
Size7 MB4 MB
Age rating4+4+
DeveloperGary SagguSystemiko Inc.

Customer experience

StelaClock

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive85.7%
Neutral0.0%
Negative14.3%

Calendar Clock

Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

StelaClock

No in-app purchases

None

Calendar Clock

No in-app purchases

Questions

Is StelaClock free?
StelaClock costs $3.99, with no in-app purchases.
Is Calendar Clock free?
Calendar Clock costs $0.99, with no in-app purchases.
Do StelaClock or Calendar Clock have ads?
Neither StelaClock nor Calendar Clock shows ads.
Which is updated more often, StelaClock or Calendar Clock?
StelaClock ships an update every 29 months, and Calendar Clock every 41 months. Most recently, StelaClock was updated on October 10, 2026 and Calendar Clock on October 15, 2026.

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