# ZetaBarber vs GreenTheory

The clearest difference is ads: GreenTheory at none against ZetaBarber's shown. On price, update cadence, 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.

ZetaBarber ships an update fortnightly, GreenTheory every 3 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ZetaBarber | GreenTheory |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/zetabarber/id1358104950/reviews)** | — |
| Number of ratings | **10** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | — |
| Size | 66 MB | 75 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Zetabarber SRL](https://appshunter.io/developer/1724939696) | [Theory Holding SPA](https://appshunter.io/developer/1674784689) |

## What reviewers say

### ZetaBarber

[App page](https://appshunter.io/ios/app/zetabarber/id1358104950)

Easily book appointments with your favorite barbers. Find nearby barbershops, select your preferred time, and manage all your bookings in one place. Get reminders and cancel appointments effortlessly.

**Highlights:** Book barber appointments, Find nearby barbershops, Manage appointments, Cancel bookings, Appointment reminders, Geolocalization search

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

**In-app purchases:** none


### GreenTheory

[App page](https://appshunter.io/ios/app/greentheory/id6445917575)

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

**In-app purchases:** none


## Frequently asked questions

### Is ZetaBarber free?

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

### Is GreenTheory free?

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

### Do ZetaBarber or GreenTheory have ads?

ZetaBarber shows ads; GreenTheory does not.

### Which is updated more often, ZetaBarber or GreenTheory?

ZetaBarber ships an update fortnightly, and GreenTheory every 3 weeks. Most recently, ZetaBarber was updated on October 26, 2026 and GreenTheory on October 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.*