Luach vs Doona
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Luach
This app is a comprehensive Halachic calendar designed for Jewish women. It helps track personal dates, Niddah laws, Mikvah scheduling, and purity days. It also functions as a Zmanim calendar and event manager, with customizable calculations and local data storage for privacy.
- Personal Halachic date tracking
- Mikvah scheduling and purity day management
- Automatic pattern and problematic date calculation
- Customizable Halachic specifications
- Global Zmanim calendar
- Event and occasion manager
- PIN protection for private data
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A full-featured Halachic monthly calendar application for the Jewish woman. It helps a Jewish wife or Kallah keep track of her personal dates, patterns, prohibition times, Mikvah scheduling, and everything else that need to be observed for the laws of Niddah. Luach shows when a "Hefsek Tahara" can be done, the Mikvah can be attended, and keeps track of the seven days of purity, "the Shiva Neki'im". Luach can schedule system reminder notifications for Hefsek Tarahas, Bedikahs, Mikvah and problematic dates that need to be observed. Luach does a full Halachic analysis of all the information, and is able to automatically calculate patterns ("Vesset Kavuah") and any problematic dates that need to be observed. Many Halachic opinions are accommodated, and all the Halachic specifications that Luach uses for its calculations can be fully customized. Luach also functions as a Zmanim calendar, and includes a full set of daily Zmanim for anywhere in the world. This includes candle-lighting times, sedra of the week, all holidays and fasts, Zman Kriat Shma, and many, many others. It also includes an event and occasion manager to keep track of birthdays, Yahrtzeits, special dates and appointments etc. Luach stores all its information locally on your device and does not transmit this information to anyone. The private information that you enter into Luach can also be protected with a PIN number. The PIN can be set from the Settings Screen. Luach comes with a built in help system which explains in detail all it's features and Halachic specifications. You can view Luach's comprehensive documentation online at https://www.compute.co.il/luach/app/. We would GREATLY appreciate feedback about any issues you encounter or about how you feel that we can improve Luach. We can be contacted at luach@compute.co.il or at 732-707-7307. Luach's source code is open source, and can be accessed at https://github.com/cbsom/LuachAndroid.
Doona
This app connects to a car seat alert system to notify parents if a child is left unattended. It features three levels of alarms and can contact emergency contacts if alerts are not acknowledged. The system aims to prevent accidental heatstroke by ensuring children are not left alone in vehicles.
- Child presence detection
- Three alert levels
- Emergency contact notification
- Connects to SensAlert device
- Parental safety monitoring
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The Doona App connects to SensAlert, the only child car seat alert solution with 3 alert levels. SensAlert detects the child on board and warns the parent or caregiver with three incremental levels of alarm if the child is left unattended in the car. If the alerts are not disabled, SensAlert will contact up to 5 emergency contacts that you have defined in the app. Download the Doona App, connect your SensAlert and we’ll take care of the rest!
Screenshots
Verdict
The clearest difference is rating: Luach at 4.5 against Doona's 2.5. Luach also leads on review sentiment (33% vs 0%) and update cadence (weekly vs every 2 months). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Luach holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: Luach has 11 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 33% of Luach's written reviews are positive against 0% of Doona's.
Luach ships an update weekly, Doona every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Luach | Doona |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (11 ratings) — better | 2.5 (2 ratings) |
| Positive reviews | 33.3% of reviews — better | 0.0% of reviews |
| Number of ratings | 11 — better | 2 |
| Update frequency | Weekly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 8.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 8 MB | 87 MB |
| Age rating | 4+ | 4+ |
| Developer | Chaim Sommers | Doona™ Parenting Made Simple |
Customer experience
Luach
Doona
In-app purchases
Luach
No in-app purchases
Doona
No in-app purchases








