# Silverlog Reciprocity vs LightCalc.io

The clearest difference is update cadence: Silverlog Reciprocity at every 5 days against LightCalc.io's every 2 weeks. Silverlog Reciprocity also leads on iOS requirement (16.4 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Silverlog Reciprocity sells 5 one-off in-app purchases and LightCalc.io sells 1 in-app purchase, starting at $34.99 per year. Whichever you choose, the download price is not the number that matters.

Silverlog Reciprocity ships an update every 5 days, LightCalc.io every 2 weeks. The most recent releases landed on October 20, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Silverlog Reciprocity | LightCalc.io |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 40 MB | 48 MB |
| Requires iOS | **16.4** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Simon Westgate](https://appshunter.io/developer/1856537803) | [Matthias Streicher-Feldhofer](https://appshunter.io/developer/1896729345) |

## What reviewers say

### Silverlog Reciprocity

[App page](https://appshunter.io/ios/app/silverlog-reciprocity/id6756740671)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nice One | $0.99 | one-time |
| Legend | $2.99 | one-time |
| Absolute Hero | $4.99 | one-time |
| Guardian Angel | $9.99 | one-time |
| Actual Saint | $29.99 | one-time |


### LightCalc.io

[App page](https://appshunter.io/ios/app/lightcalcio/id6770274311)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LightCalc Plus | $34.99 | per year |


## Frequently asked questions

### Is Silverlog Reciprocity free?

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

### Is LightCalc.io free?

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

### Do Silverlog Reciprocity or LightCalc.io have ads?

Neither Silverlog Reciprocity nor LightCalc.io shows ads.

### Which is updated more often, Silverlog Reciprocity or LightCalc.io?

Silverlog Reciprocity ships an update every 5 days, and LightCalc.io every 2 weeks. Most recently, Silverlog Reciprocity was updated on October 20, 2026 and LightCalc.io 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.*