# DELTA55 vs Aura Sync

The clearest difference is update cadence: Aura Sync at every 3 days against DELTA55's every 2 months. DELTA55's advantage is iOS requirement (16.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

DELTA55 ships an update every 2 months, Aura Sync every 3 days. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | DELTA55 | Aura Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 days** |
| Size | 103 MB | 213 MB |
| Requires iOS | **16.6** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Perfect Gym Solutions Sp. z o.o.](https://appshunter.io/developer/1004382730) | [Eric Dolecki](https://appshunter.io/developer/347369705) |

## What reviewers say

### DELTA55

[App page](https://appshunter.io/ios/app/delta55/id6475958203)

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

**In-app purchases:** none


### Aura Sync

[App page](https://appshunter.io/ios/app/aura-sync/id6753081069)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DELTA55 free?

DELTA55 is free to download, with no in-app purchases.

### Is Aura Sync free?

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

### Do DELTA55 or Aura Sync have ads?

Neither DELTA55 nor Aura Sync shows ads.

### Which is updated more often, DELTA55 or Aura Sync?

DELTA55 ships an update every 2 months, and Aura Sync every 3 days. Most recently, DELTA55 was updated on September 24, 2026 and Aura Sync on September 22, 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.*