# ByWhen vs Krin

The clearest difference is update cadence: ByWhen at weekly against Krin's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ByWhen sells 3 in-app purchases, starting at $4.99 per month and Krin sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

ByWhen ships an update weekly, Krin every 3 weeks. The most recent releases landed on November 10, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ByWhen | Krin |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 11 MB | 71 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [NiONlite LLC](https://appshunter.io/developer/1891899842) | [Hayk Dallakyan](https://appshunter.io/developer/1817411364) |

## What reviewers say

### ByWhen

[App page](https://appshunter.io/ios/app/bywhen-deadline-task-planner/id6778767584)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Annual Premium | $39.99 | per year |
| Lifetime Premium | $79.99 | one-time |


### Krin

[App page](https://appshunter.io/ios/app/krin-homework-planner-ai/id6786366056)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Krin Premium | $4.99 | per month |
| Krin Premium (Yearly) | $29.99 | per year |


## Frequently asked questions

### Is ByWhen free?

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

### Is Krin free?

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

### Do ByWhen or Krin have ads?

Neither ByWhen nor Krin shows ads.

### Which is updated more often, ByWhen or Krin?

ByWhen ships an update weekly, and Krin every 3 weeks. Most recently, ByWhen was updated on November 10, 2026 and Krin on October 31, 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.*