Comparison

Dualock vs Senior Calendar

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

Head to head
About

Dualock

This app securely stores your notes by splitting them into two encrypted parts, stored separately. Access requires authentication from two specified SNS accounts, ensuring your data remains private and inaccessible to others.

Highlights
  • Two-part encrypted note storage
  • Separate cloud storage for each part
  • Dual SNS account authentication
  • No password required
  • Secure and private data handling
Features
Read full description

Write your note. Leave Dualock keep it safe in the cloud. We do not use password, because password is not safe enough and hard to remember. Every note you saved here will be splited into two part. Both the parts will encrypted separately and saved separately, using a pair of SNS account you specified. To unlock your note, both accounts is needed. Only you know the pair and the order of the pair. It's safe. Even I don't know how to crack it.

About

Senior Calendar

This calendar app features adjustable large text for easy readability, catering to users with presbyopia or those who prefer larger fonts. It offers multiple calendar views and simple scheduling tools.

Highlights
  • Adjustable text size
  • Large text schedule entry
  • Three calendar styles
  • Quick schedule entry
  • Tag feature for bulk entry
Features
Read full description

▼ Large Text, Easy-to-Read Calendar Senior Calendar is a simple and easy-to-use calendar app designed for people in their 40s, 50s, 60s and beyond, as well as seniors and older adults. In addition to its simple and intuitive operation, one of its biggest features is the ability to freely adjust the text size. *You can change the text size using the slider at the top of the screen. Perfect for those who find small text difficult to read due to presbyopia or changes in eyesight. You can also make the text smaller, making the app comfortable to use for younger generations as well. (The simple design makes it easy for anyone to use.) ▼ Try Different Calendar Styles 1. Wall-style monthly calendar 2. Vertical schedule calendar 3. Two-column planner-style calendar You can easily switch between styles using the tabs at the bottom of the screen. Try different views for checking and planning your schedule, and use the one that works best for you. ▼ Recommended for ・Anyone looking for a large-text, easy-to-read calendar ・Those who want a simple, easy-to-use calendar app ・People with presbyopia who find small text difficult to read ・Those who want a simple calendar without unnecessary features ・People in their 40s, 50s, 60s and beyond who want a clear calendar ・Families looking for an easy-to-use calendar for older family members ▼ Main Features ・Freely adjustable text size ・Add schedules using large, readable text ・3 different calendar styles ・Simply tap a date to quickly enter a schedule ・Tag feature for adding schedules to multiple days at once ・Large text that is easy to read even without reading glasses For people in their 40s, 50s, 60s and beyond, for seniors and older adults, for those with low vision or presbyopia, and for anyone who prefers a simple design. If you are looking for an "easy-to-read" calendar with "large text," give Senior Calendar a try. -- Terms of Service https://foodmenu.world/seniorCalendar/en/tos Privacy Policy https://foodmenu.world/seniorCalendar/en/privacy

Screenshots

Dualock3 screens
Senior Calendar4 screens

Verdict

The call

The clearest difference is price: Senior Calendar at Free against Dualock's $1.99. Senior Calendar also leads on update cadence (fortnightly vs every 4 months) and ratings volume (57 vs 1). Dualock's advantage is in-app purchases (none vs 3) and ads (none vs shown). On device support and iOS requirement 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

Senior Calendar is free to download; Dualock costs $1.99 up front. Senior Calendar sells 3 in-app purchases, starting at $1.99 per month. Dualock asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Dualock holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Senior Calendar has 57 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Dualock ships an update every 4 months, Senior Calendar fortnightly. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

Scorecard7 real differences · 3 level
Dualock versus Senior Calendar: the parameters behind the verdict, then further details
ParameterDualockSenior Calendar
Price$1.99Free — better
Rating5.0 (1 ratings) — better4.6 (57 ratings)
Positive reviews—0.0% of reviews
Number of ratings157 — better
Update frequencyEvery 4 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better13.0
Further details — not scored
Size26 MB46 MB
Age rating4+4+
DeveloperGear Zero Network Inc.Foodmenu.world Inc.

Customer experience

Dualock

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Senior Calendar

All ratings57 ratings
Positive91.2%
Neutral3.5%
Negative5.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Dualock

No in-app purchases

3 purchases

Senior Calendar

Subscriptions3
  • Monthly Plan$1.991 Month
  • Annual Plan Sale$11.991 Year
  • Annual Plan$22.991 Year

Questions

Is Dualock free?
Dualock costs $1.99, with no in-app purchases.
Is Senior Calendar free?
Senior Calendar is free to download, with in-app purchases available.
Which has better reviews, Dualock or Senior Calendar?
Dualock is rated higher. Dualock averages 5.0 out of 5 from 1 ratings, while Senior Calendar averages 4.6 from 57 ratings.
Do Dualock or Senior Calendar have ads?
Senior Calendar shows ads; Dualock does not.
Which is updated more often, Dualock or Senior Calendar?
Dualock ships an update every 4 months, and Senior Calendar fortnightly. Most recently, Dualock was updated on October 20, 2026 and Senior Calendar on October 25, 2026.

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