# NiuMa闹钟 vs DelayLens

The clearest difference is update cadence: NiuMa闹钟 at every 5 days against DelayLens's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. NiuMa闹钟 sells 1 one-off in-app purchase and DelayLens sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

NiuMa闹钟 ships an update every 5 days, DelayLens every 3 weeks. The most recent releases landed on October 9, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | NiuMa闹钟 | DelayLens |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/delaylens-procrastination-log/id6790460890/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 15 MB | 14 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [志文 李](https://appshunter.io/developer/1852909959) | [子莹 李](https://appshunter.io/developer/1896745961) |

## What reviewers say

### NiuMa闹钟

[App page](https://appshunter.io/ios/app/niuma/id6761598998)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro会员 | $2.99 | one-time |


### DelayLens

[App page](https://appshunter.io/ios/app/delaylens-procrastination-log/id6790460890)

This app helps you recover from procrastination by logging the experience, identifying causes, and guiding you to take one small next step. It offers focused work sessions and provides insights into what helps you restart.

**Highlights:** Log procrastination time, Identify causes and add notes, Define small next actions, Set focus sessions (5, 15, 25 min), Review daily and weekly trends, Gain insights into method effectiveness

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DelayLens Pro Monthly | $1.99 | per month |
| DelayLens Pro Yearly | $9.99 | per year |
| DelayLens Founder Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is NiuMa闹钟 free?

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

### Is DelayLens free?

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

### Do NiuMa闹钟 or DelayLens have ads?

Neither NiuMa闹钟 nor DelayLens shows ads.

### Which is updated more often, NiuMa闹钟 or DelayLens?

NiuMa闹钟 ships an update every 5 days, and DelayLens every 3 weeks. Most recently, NiuMa闹钟 was updated on October 9, 2026 and DelayLens on October 1, 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.*