# BilateralBase vs Built By Curtis

The clearest difference is in-app purchases: BilateralBase at none against Built By Curtis's 1. BilateralBase also leads on update cadence (fortnightly vs every 4 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Built By Curtis sells 1 in-app purchase, starting at $399.99 per month. BilateralBase asks for nothing beyond the download.

BilateralBase ships an update fortnightly, Built By Curtis every 4 months. The most recent releases landed on September 19, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | BilateralBase | Built By Curtis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bilateralbase/id1561326248/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free | — |
| Size | 36 MB | 51 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Bilateral Base LTD](https://appshunter.io/developer/1561326250) | [Curtis Christofi](https://appshunter.io/developer/1769219467) |

## What reviewers say

### BilateralBase

[App page](https://appshunter.io/ios/app/bilateralbase/id1561326248)

This app provides an optimized EMDR therapy experience for iPad and iPhone users. It allows seamless joining of online therapy sessions via a therapist-provided link, ensuring all tools are available and the session is optimized for your device.

**Highlights:** Optimized EMDR therapy experience, Seamless online session joining, Therapist-provided link integration, Tool availability for therapy sessions, Device optimization for iPad/iPhone

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

**In-app purchases:** none


### Built By Curtis

[App page](https://appshunter.io/ios/app/built-by-curtis/id6695759317)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Coaching | $399.99 | per month |


## Frequently asked questions

### Is BilateralBase free?

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

### Is Built By Curtis free?

Built By Curtis is free to download, with in-app purchases available.

### Do BilateralBase or Built By Curtis have ads?

Neither BilateralBase nor Built By Curtis shows ads.

### Which is updated more often, BilateralBase or Built By Curtis?

BilateralBase ships an update fortnightly, and Built By Curtis every 4 months. Most recently, BilateralBase was updated on September 19, 2026 and Built By Curtis on September 27, 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.*