# By vs LumiSync

The clearest difference is price: By at Free against LumiSync's $0.99. By also leads on iOS requirement (8.0 vs 16.0). LumiSync's advantage is update cadence (fortnightly vs every 3 months) and chart position (#180 vs unranked). On ads, in-app purchases and device support there is nothing between them.

By is free to download; LumiSync costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

By ships an update every 3 months, LumiSync fortnightly. The most recent releases landed on September 19, 2026 and August 15, 2026 respectively.

## The numbers

| Metric | By | LumiSync |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Best chart rank | — | **#180** |
| Size | 10 MB | 4 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vimar S.p.A.](https://appshunter.io/developer/401438010) | [Erfan Reed](https://appshunter.io/developer/1347463370) |

## What reviewers say

### By

[App page](https://appshunter.io/ios/app/by-gate/id1337012556)

**In-app purchases:** none


### LumiSync

[App page](https://appshunter.io/ios/app/lumisync/id6677019123)

**Currently charting:** #180 Top Paid · Productivity (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is By free?

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

### Is LumiSync free?

LumiSync costs $0.99, with no in-app purchases.

### Do By or LumiSync have ads?

Neither By nor LumiSync shows ads.

### Which is updated more often, By or LumiSync?

By ships an update every 3 months, and LumiSync fortnightly. Most recently, By was updated on September 19, 2026 and LumiSync on August 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.*