# Customer App vs GreenTheory

The clearest difference is update cadence: GreenTheory at monthly against Customer App's every 13 months. Customer App's advantage is iOS requirement (13.0 vs 16.4). 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.

Customer App ships an update every 13 months, GreenTheory monthly. The most recent releases landed on June 24, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Customer App | GreenTheory |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 18.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | Free | — |
| Size | 57 MB | 75 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Roberto Papa](https://appshunter.io/developer/924984493) | [Theory Holding SPA](https://appshunter.io/developer/1674784689) |

## What reviewers say

### Customer App

[App page](https://appshunter.io/ios/app/customer-app/id1343743239)

Stay connected with your salon through this app. Book appointments, send messages, and receive exclusive promotions.

**Highlights:** Book appointments, Message salon, Receive promotions, Stay connected, Salon management

**Features:** macOS Compatibility

**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 Customer App free?

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

### Is GreenTheory free?

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

### Do Customer App or GreenTheory have ads?

Neither Customer App nor GreenTheory shows ads.

### Which is updated more often, Customer App or GreenTheory?

Customer App ships an update every 13 months, and GreenTheory monthly. Most recently, Customer App was updated on June 24, 2026 and GreenTheory on September 14, 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.*