ORDO: calendrier liturgique

4.4
247 reviews
10K+
Downloads
Content rating
Everyone 10+
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About this app

ORDO is a perpetual liturgical calendar (until 2037) and a missal for the traditional Catholic rite.
It conforms to the 1962 liturgical calendar, centered around the Mass of Saint Pius V (in Latin).

For each day, you can find:
- The various feasts of the day,
- The proper texts for each day,
- The lives of the saints of the day.
- The Ordinary of the Mass including the texts for each day
- The choice of Mass form (read/sung)
- For sung Masses, the main Gregorian scores from the Kyriale

All information is in the application and is not downloaded from the Internet: it is therefore always available.

THE CALENDAR

It includes:
- Sundays, feast days, vigils, octaves, and holidays,
- Commemorations (or memorials),
- Universal and French solemnities,
- Various possible feast days on the same day,
- Certain feast days of France, Brittany, and the dioceses of Paris and Switzerland.
- Indications of obligatory feast days, days of fasting, and abstinence.
- Liturgical notes: prevented or postponed feast days, etc.

READINGS & LIVES OF SAINTS
For each feast day, the texts of the day are available, along with a summary of the life of the saint(s) of the day.

PRAYERS
On Fridays during Lent, a Stations of the Cross is available.

MISSAL
The application can display the Mass Ordinary adapted to each day:
- the form of the Mass (read/sung/solemn, and the short or long versions of the Ember-beats)
- the texts of the proper are dynamically included,
- the Ordinary adapts according to the day and the liturgical season (for example, Asperges Me/Vidi Aquam on Sundays, etc.)
- Gregorian scores for the main Masses of the Kyriale
- Special ceremonies: blessings, processions, and ceremonies of Holy Week.

APP NAVIGATION
The application allows you to:
- navigate the calendar, which highlights the feast day,
- go directly to a given date,
- search for feast days (a single keyword),
- display the details of a day, which provides access to the readings,
- choose the location where the celebrations should be displayed.

Please feel free to send emails to report any anomalies, send your comments and requests for improvements.
Updated on
Dec 13, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
App info and performance and Device or other IDs
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.4
233 reviews
Roxie Beckles
November 7, 2025
Great app! Unfortunately it only displays in French - despite setting the app to English.
2 people found this review helpful
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TradDevs
December 13, 2025
Hello, yes I know. I have only the time to manage one language. It's available worldwide for french speaker leaving all over the world.
Tom Kardy
August 15, 2024
Excellent app! I'm speechless, very ergonomic and smart interface, all is very well organized, elegant, clean and simple with a great typographic taste. This is exactly what I was looking for. Only wish to have polish language available or just english. Thank you!
1 person found this review helpful
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TradDevs
August 24, 2024
Bonjour & merci beaucoup pour votre appréciation. Concernant le polonais, ni même l'anglais, je ne veux pas vous donner de faux espoirs : ce n'est pas envisagé
Markus Kurmann
November 17, 2024
Wonderful App for believers who want to attend the Traditional Latin Mass. Best App out there, incredibly well designed. You get along easily, even if you don't speak french! I bought an Android-Phone just for Church :-) !!! Anyway, an iOS version would certainly be appreciated. By thousands of catholic Apple users!
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TradDevs
December 31, 2024
Merci pour vos encouragements. PS: une version iOS existe, mais moins complète pour le moment.

What’s new

2.67:
- Ajout du Kyrie XVII-C
- Accès direct, sans défilement, aux éléments de la Messe
- Corrections de textes

App support

About the developer
GALIANA Denis Joseph Marcel
contact@traddevs.com
France