# Zen Planner Engage vs Simon Sync

The clearest difference is update cadence: Simon Sync at every 2 weeks against Zen Planner Engage's every 3 months. 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.

Zen Planner Engage ships an update every 3 months, Simon Sync every 2 weeks. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Zen Planner Engage | Simon Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (5 ratings)](https://appshunter.io/ios/app/zen-planner-engage/id6470791766/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 342 MB | 169 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Daxko LLC](https://appshunter.io/developer/633678240) | [Simon Property Group](https://appshunter.io/developer/395128183) |

## What reviewers say

### Zen Planner Engage

[App page](https://appshunter.io/ios/app/zen-planner-engage/id6470791766)

This app helps gym owners connect with leads and members through integrated chat, SMS, and calls. Manage member engagement and marketing from a single mobile platform to attract, convert, and retain clients.

**Highlights:** Integrated chat, 2-way SMS, Voice calls, Member engagement management, Marketing management, Lead conversion tools

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

**In-app purchases:** none


### Simon Sync

[App page](https://appshunter.io/ios/app/simon-sync/id6747361474)

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

**In-app purchases:** none


## Frequently asked questions

### Is Zen Planner Engage free?

Zen Planner Engage is free to download, with no in-app purchases.

### Is Simon Sync free?

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

### Do Zen Planner Engage or Simon Sync have ads?

Neither Zen Planner Engage nor Simon Sync shows ads.

### Which is updated more often, Zen Planner Engage or Simon Sync?

Zen Planner Engage ships an update every 3 months, and Simon Sync every 2 weeks. Most recently, Zen Planner Engage was updated on September 9, 2026 and Simon Sync on September 19, 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.*