# CalcuLight vs LapseArc

The clearest difference is in-app purchases: LapseArc at none against CalcuLight's 2. CalcuLight's advantage is device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, update cadence and ads there is nothing between them.

Both are free to download. CalcuLight sells 2 in-app purchases, starting at $0.99 per month. LapseArc asks for nothing beyond the download.

CalcuLight ships an update monthly, LapseArc every 4 weeks. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | CalcuLight | LapseArc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/calculight/id6758964459/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Freemium | — |
| Size | 40 MB | 53 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Li Fan](https://appshunter.io/developer/1876047115) | [原 胡](https://appshunter.io/developer/1875897119) |

## What reviewers say

### CalcuLight

[App page](https://appshunter.io/ios/app/calculight/id6758964459)

This app provides advanced light metering for film photographers, offering multiple metering modes and exposure control options. It helps users achieve precise exposures for their shots, with features like Zone System display and a log book for tracking. A free version is available, with an optional Pro upgrade for more advanced tools.

**Highlights:** Center Weighted metering, 3D Matrix metering, Spot metering (Pro), Calculated metering (Pro), Shutter Priority metering, Aperture Priority metering (Pro), Zone System overlay (Pro), Log book with GPS (Pro)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CalcuLight | $0.99 | per month |
| CalcuLight | $14.99 | one-time |


### LapseArc

[App page](https://appshunter.io/ios/app/lapsearc-8k-stable-timelapse/id6809552639)

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

**In-app purchases:** none


## Frequently asked questions

### Is CalcuLight free?

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

### Is LapseArc free?

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

### Do CalcuLight or LapseArc have ads?

Neither CalcuLight nor LapseArc shows ads.

### Which is updated more often, CalcuLight or LapseArc?

CalcuLight ships an update monthly, and LapseArc every 4 weeks. Most recently, CalcuLight was updated on October 31, 2026 and LapseArc on November 6, 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.*