# Lighting Calculations vs KeepClose

The clearest difference is ads: KeepClose at none against Lighting Calculations's shown. KeepClose also leads on update cadence (daily vs every 5 weeks). Lighting Calculations's advantage is ratings volume (6 vs 2) and iOS requirement (15.0 vs 17.0). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Lighting Calculations sells 3 in-app purchases, starting at $1.99 per 3 months and KeepClose sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

KeepClose holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 2 respectively.

Lighting Calculations ships an update every 5 weeks, KeepClose daily. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Lighting Calculations | KeepClose |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (6 ratings)](https://appshunter.io/ios/app/lighting-calculations/id1021580336/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/keepclose-stay-in-touch/id6779501270/reviews)** |
| Number of ratings | **6** | 2 |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Daily** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 33 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Egal Net di Ettore Gallina](https://appshunter.io/developer/993232047) | [Goodfriend Solutions, LLC](https://appshunter.io/developer/6773820137) |

## What reviewers say

### Lighting Calculations

[App page](https://appshunter.io/ios/app/lighting-calculations/id1021580336)

This app transforms your smartphone into a comprehensive lighting design tool. It offers advanced calculations for room lighting, LED analysis, and efficiency, alongside quick conversions and essential technical resources. Ensure your lighting projects meet all standards and optimize energy usage.

**Highlights:** Room lighting design calculations, LED analysis (lifespan, photobiological risk), Energy efficiency calculations, Photometric code decoding, Lumen, Lux, Candela, Watt conversions, Normative requirements and technical guides, Light quality metrics (CRI, UGR)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Version (3 months) | $1.99 | per 3 months |
| PRO Version (1 year) | $2.99 | per year |
| PRO Version (Lifetime) | $89.99 | one-time |


### KeepClose

[App page](https://appshunter.io/ios/app/keepclose-stay-in-touch/id6779501270)

Gently reminds you to connect with loved ones you may have lost touch with. It tracks your communication frequency, provides alerts for special dates, and keeps a private record of past conversations. Stay present in your relationships without compromising your data.

**Highlights:** Track communication frequency, Receive birthday/anniversary alerts, Private conversation timeline, One-tap calling/texting, Data privacy focused

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MissionPilot KeepClose Local | $1.99 | per month |
| MissionPilot KeepClose Local | $19.99 | per year |


## Frequently asked questions

### Is Lighting Calculations free?

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

### Is KeepClose free?

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

### Which has better reviews, Lighting Calculations or KeepClose?

KeepClose is rated higher. Lighting Calculations averages 4.8 out of 5 from 6 ratings, while KeepClose averages 5.0 from 2 ratings.

### Do Lighting Calculations or KeepClose have ads?

Lighting Calculations shows ads; KeepClose does not.

### Which is updated more often, Lighting Calculations or KeepClose?

Lighting Calculations ships an update every 5 weeks, and KeepClose daily. Most recently, Lighting Calculations was updated on October 29, 2026 and KeepClose on October 25, 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.*