# BookKeep vs ByWhen

The clearest difference is in-app purchases: BookKeep at none against ByWhen's 2. BookKeep also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price and ads there is nothing between them.

Both are free to download. ByWhen sells 2 in-app purchases, starting at $4.99 per month. BookKeep asks for nothing beyond the download.

## The numbers

| Metric | BookKeep | ByWhen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 days |
| Size | 30 MB | 8 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MindSprout Studios LLC](https://appshunter.io/developer/1879886712) | [NiONlite LLC](https://appshunter.io/developer/1891899842) |

## What reviewers say

### BookKeep

[App page](https://appshunter.io/ios/app/bookkeep-deadline-tracker/id6760771788)

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

**In-app purchases:** none


### ByWhen

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

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $4.99 | per month |
| Annual Premium | $39.99 | per year |


## Frequently asked questions

### Is BookKeep free?

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

### Is ByWhen free?

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

### Do BookKeep or ByWhen have ads?

Neither BookKeep nor ByWhen shows ads.

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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.*