# LightenAR vs CalmPrime

The clearest difference is ads: LightenAR at none against CalmPrime's shown. CalmPrime's advantage is update cadence (daily vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

LightenAR ships an update fortnightly, CalmPrime daily. The most recent releases landed on May 16, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | LightenAR | CalmPrime |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Fortnightly | **Daily** |
| Size | 95 MB | 31 MB |
| Requires iOS | **15.0** | 16 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Light Generation Co., Ltd.](https://appshunter.io/developer/1493376220) | [HUNG-PIN YU](https://appshunter.io/developer/963095666) |

## What reviewers say

### LightenAR

[App page](https://appshunter.io/ios/app/lightenar/id1562635362)

**Features:** macOS Compatibility

**In-app purchases:** none


### CalmPrime

[App page](https://appshunter.io/ios/app/calmprime/id6744655217)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is LightenAR free?

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

### Is CalmPrime free?

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

### Do LightenAR or CalmPrime have ads?

CalmPrime shows ads; LightenAR does not.

### Which is updated more often, LightenAR or CalmPrime?

LightenAR ships an update fortnightly, and CalmPrime daily. Most recently, LightenAR was updated on May 16, 2026 and CalmPrime on September 22, 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.*