# SACH vs Reserved Calendar Pro

The clearest difference is update cadence: Reserved Calendar Pro at every 4 days against SACH's every 2 months. SACH's advantage is iOS requirement (13.0 vs 15.1). 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.

SACH ships an update every 2 months, Reserved Calendar Pro every 4 days. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | SACH | Reserved Calendar Pro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 36 MB | 47 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ZORA SYSTEMS, S. A. DE C. V.](https://appshunter.io/developer/1508596600) | [Reserved Technology](https://appshunter.io/developer/1808055925) |

## What reviewers say

### SACH

[App page](https://appshunter.io/ios/app/sach/id1556534709)

Manage daily business center activities with ease. Pay bills instantly, track services, book meeting rooms, and receive notifications for messages and mail. Connect with community members.

**Highlights:** Instant bill payment, Service usage tracking, Meeting room booking, Message and mail notifications, Community member search

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

**In-app purchases:** none


### Reserved Calendar Pro

[App page](https://appshunter.io/ios/app/reserved-calendar-pro/id6744539013)

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

**In-app purchases:** none


## Frequently asked questions

### Is SACH free?

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

### Is Reserved Calendar Pro free?

Reserved Calendar Pro is free to download, with no in-app purchases.

### Do SACH or Reserved Calendar Pro have ads?

Neither SACH nor Reserved Calendar Pro shows ads.

### Which is updated more often, SACH or Reserved Calendar Pro?

SACH ships an update every 2 months, and Reserved Calendar Pro every 4 days. Most recently, SACH was updated on October 12, 2026 and Reserved Calendar Pro on October 6, 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.*