# GrayZone vs KeeperSafe

The clearest difference is update cadence: GrayZone at every 8 days against KeeperSafe's every 2 weeks. GrayZone also leads on iOS requirement (18.6 vs 26.6). KeeperSafe's advantage is price ($1.99 vs $2.99). On ads, in-app purchases and device support there is nothing between them.

GrayZone costs $2.99 and KeeperSafe $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

GrayZone ships an update every 8 days, KeeperSafe every 2 weeks. Both last shipped on November 15, 2026.

## The numbers

| Metric | GrayZone | KeeperSafe |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Rating | **[2.8 (5 ratings)](https://appshunter.io/ios/app/grayzone-light-meter/id6757147623/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 62.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | Paid | — |
| Size | 3 MB | 7 MB |
| Requires iOS | **18.6** | 26.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Massimiliano Schenetti](https://appshunter.io/developer/1864870280) | [Nick Kuhne](https://appshunter.io/developer/488422380) |

## What reviewers say

### GrayZone

[App page](https://appshunter.io/ios/app/grayzone-light-meter/id6757147623)

This app provides precise light metering for photographers, allowing for accurate exposure control in complex lighting situations. It offers zone system and spot metering modes, ideal for both film and digital manual shooters.

**Highlights:** Zone System Mode, Real SPOT Metering, Direct Exposure Control, ISO setting, Half-stop support, Manual mode with over/underexposure scale, Live preview

**In-app purchases:** none


### KeeperSafe

[App page](https://appshunter.io/ios/app/keepersafe-sd-card-backup/id6788216621)

**In-app purchases:** none


## Frequently asked questions

### Is GrayZone free?

GrayZone costs $2.99, with no in-app purchases.

### Is KeeperSafe free?

KeeperSafe costs $1.99, with no in-app purchases.

### Do GrayZone or KeeperSafe have ads?

Neither GrayZone nor KeeperSafe shows ads.

### Which is updated more often, GrayZone or KeeperSafe?

GrayZone ships an update every 8 days, and KeeperSafe every 2 weeks. Most recently, GrayZone was updated on November 15, 2026 and KeeperSafe on November 15, 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.*