# Calendar Schedule vs Observify

The clearest difference is in-app purchases: Observify at none against Calendar Schedule's 1. Calendar Schedule's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

Both are free to download. Calendar Schedule sells 1 one-off in-app purchase. Observify asks for nothing beyond the download.

Calendar Schedule ships an update every 8 months, Observify every 5 months. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Calendar Schedule | Observify |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (1 ratings)](https://appshunter.io/ios/app/observify/id6444661926/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 months** |
| Monetization | — | Free |
| Size | 60 MB | 2 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dan Olov Hyllengren](https://appshunter.io/developer/480729834) | [Hassene BEN SALEM](https://appshunter.io/developer/1655919547) |

## What reviewers say

### Calendar Schedule

[App page](https://appshunter.io/ios/app/calendar-schedule/id1492905050)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock calendar restrictions | Free | one-time |


### Observify

[App page](https://appshunter.io/ios/app/observify/id6444661926)

This app helps you build and monitor personal habits. You can create custom habits, set goals, and track progress with detailed charts and insights. Your data remains private and stored only on your device.

**Highlights:** Create and quantify habits, Set and exceed habit goals, Attach metrics and tags to habits, Personalizable habit occurrences, Insightful habit charts, On-device data storage

**In-app purchases:** none


## Frequently asked questions

### Is Calendar Schedule free?

Calendar Schedule is free to download, with in-app purchases available.

### Is Observify free?

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

### Do Calendar Schedule or Observify have ads?

Neither Calendar Schedule nor Observify shows ads.

### Which is updated more often, Calendar Schedule or Observify?

Calendar Schedule ships an update every 8 months, and Observify every 5 months. Most recently, Calendar Schedule was updated on October 12, 2026 and Observify on October 7, 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.*