# Diary AI vs Task Calendar

The clearest difference is price: Task Calendar at Free against Diary AI's $0.99. Task Calendar also leads on update cadence (weekly vs every 16 months) and iOS requirement (15.1 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Task Calendar is free to download; Diary AI costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Diary AI ships an update every 16 months, Task Calendar weekly. The most recent releases landed on October 30, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Diary AI | Task Calendar |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Weekly** |
| Monetization | — | Free |
| Size | 3 MB | 44 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Juiko Ong](https://appshunter.io/developer/639263890) | [naoki otsu](https://appshunter.io/developer/1082476153) |

## What reviewers say

### Diary AI

[App page](https://appshunter.io/ios/app/diary-ai/id6532618062)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Task Calendar

[App page](https://appshunter.io/ios/app/task-calendar-todo-and-planner/id6798184877)

Organize your life by writing and editing tasks directly on a monthly calendar. View all your commitments at a glance, with unlimited tabs, sorting, and customizable themes. Keep your data secure with offline support and biometric authentication.

**Highlights:** Task management on a monthly calendar, Unlimited tabs for categories, Task sorting and reordering, Tasks without specific dates, Notifications for reminders, Dark mode and custom background colors, Biometric authentication for security

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Diary AI free?

Diary AI costs $0.99, with no in-app purchases.

### Is Task Calendar free?

Task Calendar is free to download, with no in-app purchases.

### Do Diary AI or Task Calendar have ads?

Neither Diary AI nor Task Calendar shows ads.

### Which is updated more often, Diary AI or Task Calendar?

Diary AI ships an update every 16 months, and Task Calendar weekly. Most recently, Diary AI was updated on October 30, 2026 and Task Calendar on November 4, 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.*