# iMobile Reader vs Light Meter

The clearest difference is in-app purchases: iMobile Reader at none against Light Meter's 2. iMobile Reader also leads on device support (3 vs 1) and iOS requirement (9.0 vs 16.6). Light Meter's advantage is update cadence (weekly vs every 2 months). On price and ads there is nothing between them.

Both are free to download. Light Meter sells 2 in-app purchases, starting at $7.99 per year. iMobile Reader asks for nothing beyond the download.

iMobile Reader ships an update every 2 months, Light Meter weekly. The most recent releases landed on September 20, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | iMobile Reader | Light Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.6 (5 ratings)](https://appshunter.io/ios/app/light-meter-filmbox/id6757200856/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 85.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | — | Freemium |
| Size | 93 MB | 33 MB |
| Requires iOS | **9.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [群辉 喻](https://appshunter.io/developer/1102126807) | [卓 朱](https://appshunter.io/developer/1864726195) |

## What reviewers say

### iMobile Reader

[App page](https://appshunter.io/ios/app/imobile-reader/id1514354528)

**Features:** macOS Compatibility

**In-app purchases:** none


### Light Meter

[App page](https://appshunter.io/ios/app/light-meter-filmbox/id6757200856)

This app helps film photographers precisely measure light, distance, and depth of field before taking a shot. It offers tools for exposure evaluation, flash calculation, and reciprocity failure compensation, with advanced features available via a one-time purchase.

**Highlights:** Light metering, Zone metering, Flash calculator, Reciprocity failure compensation, Distance meter (LiDAR), Depth of field calculator, Gear library

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FilmBox Toolkit Pro Subscription | $7.99 | per year |
| FilmBox Toolkit Pro | $17.99 | one-time |


## Frequently asked questions

### Is iMobile Reader free?

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

### Is Light Meter free?

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

### Do iMobile Reader or Light Meter have ads?

Neither iMobile Reader nor Light Meter shows ads.

### Which is updated more often, iMobile Reader or Light Meter?

iMobile Reader ships an update every 2 months, and Light Meter weekly. Most recently, iMobile Reader was updated on September 20, 2026 and Light Meter on September 23, 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.*