# hydo vs SimplyTodo

hydo and SimplyTodo are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. hydo sells 2 in-app purchases, starting at $1.99 per month and SimplyTodo sells 6 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | hydo | SimplyTodo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Freemium | — |
| Size | 13 MB | 7 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, Mac | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Hyson Works](https://appshunter.io/developer/1824843528) | [SinabroApps](https://appshunter.io/developer/1896486960) |

## What reviewers say

### hydo

[App page](https://appshunter.io/ios/app/hydo/id6794805038)

View your monthly calendar directly on your lock screen without unlocking your phone. Organize events by group with color-coding and easily share calendars with others using invite codes. Customize widget size and position, and sync with existing iCloud and Gmail calendars.

**Highlights:** Monthly calendar on lock screen, Group color-coding, Invite code sharing, Customizable widget size and position, Today's remaining events widget, Syncs with iCloud/Gmail calendars, Recurring event support

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| hydo 프리미엄 (월간) | $1.99 | per month |
| hydo 프리미엄 (연간) | $17.99 | per year |


### SimplyTodo

[App page](https://appshunter.io/ios/app/simplytodo-to-do-and-task-list/id6806489902)

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Note Theme | $1.99 | one-time |
| Blossom Theme | $1.99 | one-time |
| Terminal Theme | $1.99 | one-time |
| Sepia Theme | $1.99 | one-time |
| Slate Theme | $1.99 | one-time |
| All Themes | $5.99 | one-time |


## Frequently asked questions

### Is hydo free?

hydo is free to download, with in-app purchases available.

### Is SimplyTodo free?

SimplyTodo is free to download, with in-app purchases available.

### Do hydo or SimplyTodo have ads?

Neither hydo nor SimplyTodo shows ads.

### Which is updated more often, hydo or SimplyTodo?

hydo ships an update fortnightly, and SimplyTodo fortnightly. Most recently, hydo was updated on November 1, 2026 and SimplyTodo on October 26, 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.*