# Diary Keeper vs LUX METER

The clearest difference is in-app purchases: Diary Keeper at none against LUX METER's 1. LUX METER's advantage is device support (3 vs 1) and iOS requirement (15.6 vs 17.0). On price and ads there is nothing between them.

Both are free to download. LUX METER sells 1 one-off in-app purchase. Diary Keeper asks for nothing beyond the download.

## The numbers

| Metric | Diary Keeper | LUX METER |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | — |
| Size | 98 MB | 39 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Saranjith Krishnan](https://appshunter.io/developer/1370774261) | [Emirhan Salihoglu](https://appshunter.io/developer/1878969903) |

## What reviewers say

### Diary Keeper

[App page](https://appshunter.io/ios/app/diary-keeper-private-journal/id6475716071)

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

**In-app purchases:** none


### LUX METER

[App page](https://appshunter.io/ios/app/lux-meter-luxfcppfd/id6780143255)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lifetime | $2.99 | one-time |


## Frequently asked questions

### Is Diary Keeper free?

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

### Is LUX METER free?

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

### Do Diary Keeper or LUX METER have ads?

Neither Diary Keeper nor LUX METER 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.*