# UDOList vs LazyTime Calculator

The clearest difference is in-app purchases: LazyTime Calculator at none against UDOList's 3. UDOList's advantage is update cadence (weekly vs every 6 weeks) and iOS requirement (15.6 vs 18.4). On price, ads and device support there is nothing between them.

Both are free to download. UDOList sells 3 in-app purchases, starting at $0.99 per month. LazyTime Calculator asks for nothing beyond the download.

UDOList ships an update weekly, LazyTime Calculator every 6 weeks. Both last shipped on November 9, 2026.

## The numbers

| Metric | UDOList | LazyTime Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 weeks |
| Size | 54 MB | 12 MB |
| Requires iOS | **15.6** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [俊豪 陈](https://appshunter.io/developer/1694583989) | [俊辰 黎](https://appshunter.io/developer/1813083979) |

## What reviewers say

### UDOList

[App page](https://appshunter.io/ios/app/udolist/id6754129578)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UDOlist Monthly Membership | $0.99 | per month |
| UDOlist年度会员 | $3.99 | per year |
| UDOlist永久会员 | $9.99 | one-time |


### LazyTime Calculator

[App page](https://appshunter.io/ios/app/lazytime-calculator/id6756006213)

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

**In-app purchases:** none


## Frequently asked questions

### Is UDOList free?

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

### Is LazyTime Calculator free?

LazyTime Calculator is free to download, with no in-app purchases.

### Do UDOList or LazyTime Calculator have ads?

Neither UDOList nor LazyTime Calculator shows ads.

### Which is updated more often, UDOList or LazyTime Calculator?

UDOList ships an update weekly, and LazyTime Calculator every 6 weeks. Most recently, UDOList was updated on November 9, 2026 and LazyTime Calculator on November 9, 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.*