# Spineworks Chiropractic vs Two Circles Summit

The clearest difference is update cadence: Two Circles Summit at every 8 days against Spineworks Chiropractic's every 3 weeks. Spineworks Chiropractic's advantage is iOS requirement (16.0 vs 18.6). 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.

Spineworks Chiropractic ships an update every 3 weeks, Two Circles Summit every 8 days. The most recent releases landed on September 30, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Spineworks Chiropractic | Two Circles Summit |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Size | 98 MB | 67 MB |
| Requires iOS | **16.0** | 18.6 |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Spineworks Chiropractic Ltd](https://appshunter.io/developer/1822260046) | [Two Circles Limited](https://appshunter.io/developer/1885593363) |

## What reviewers say

### Spineworks Chiropractic

[App page](https://appshunter.io/ios/app/spineworks-chiropractic/id6747667401)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Two Circles Summit

[App page](https://appshunter.io/ios/app/two-circles-summit/id6760662091)

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

**In-app purchases:** none


## Frequently asked questions

### Is Spineworks Chiropractic free?

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

### Is Two Circles Summit free?

Two Circles Summit is free to download, with no in-app purchases.

### Do Spineworks Chiropractic or Two Circles Summit have ads?

Neither Spineworks Chiropractic nor Two Circles Summit shows ads.

### Which is updated more often, Spineworks Chiropractic or Two Circles Summit?

Spineworks Chiropractic ships an update every 3 weeks, and Two Circles Summit every 8 days. Most recently, Spineworks Chiropractic was updated on September 30, 2026 and Two Circles Summit on September 24, 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.*