# Dualock vs Senior Calendar

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.

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.

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.

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

## The numbers

| Metric | Dualock | Senior Calendar |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/dualock-secure-note/id597531505/reviews)** | [4.6 (57 ratings)](https://appshunter.io/ios/app/senior-calendar/id6749182390/reviews) |
| Number of ratings | 1 | **57** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 26 MB | 46 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gear Zero Network Inc.](https://appshunter.io/developer/1081762357) | [Foodmenu.world Inc.](https://appshunter.io/developer/1438351063) |

## What reviewers say

### Dualock

[App page](https://appshunter.io/ios/app/dualock-secure-note/id597531505)

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:** macOS Compatibility

**In-app purchases:** none


### Senior Calendar

[App page](https://appshunter.io/ios/app/senior-calendar/id6749182390)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $1.99 | per month |
| Annual Plan Sale | $11.99 | per year |
| Annual Plan | $22.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*