# Calendars vs InstantQuiz

The clearest difference is price: Calendars at Free against InstantQuiz's $3.99. Calendars also leads on update cadence (weekly vs every 5 months) and chart position (#108 vs unranked). InstantQuiz's advantage is in-app purchases (none vs 10) and iOS requirement (15.6 vs 18.2). On ads and device support there is nothing between them.

Calendars is free to download; InstantQuiz costs $3.99 up front. Calendars sells 10 in-app purchases, starting at $3.99 per month. InstantQuiz asks for nothing beyond the download.

Calendars ships an update weekly, InstantQuiz every 5 months. The most recent releases landed on November 12, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Calendars | InstantQuiz |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.7 (123K ratings)](https://appshunter.io/ios/app/calendars-schedule-planner/id608834326/reviews)** | — |
| Number of ratings | **123K** | — |
| Positive reviews | 56.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 5 months |
| Monetization | Freemium | — |
| Best chart rank | **#108** | — |
| Size | 414 MB | 101 MB |
| Requires iOS | 18.2 | **15.6** |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Readdle Technologies Limited](https://appshunter.io/developer/285035419) | [Tonderai Cheza](https://appshunter.io/developer/1569762021) |

## What reviewers say

### Calendars

[App page](https://appshunter.io/ios/app/calendars-schedule-planner/id608834326)

**Currently charting:** #108 Top Free · Productivity, #130 Top Grossing · Productivity (US App Store)

This app combines calendar, task management, and habit tracking to boost productivity and organization. It offers seamless syncing across Apple devices and integrates with popular services like Google Calendar. Plan your day, manage tasks, and build routines with customizable views and features.

**Highlights:** Calendar and task management, Habit tracking and routine building, Cross-device syncing, Natural language event creation, Integration with Google Calendar and Zoom, Customizable views and widgets

**Features:** Family Sharing, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calendars PRO 1 Month | $3.99 | per month |
| Calendars by Readdle: Interesting Calendars | $3.99 | per year |
| Calendars PRO 1 Month | $3.99 | per month |
| Calendars PRO 1 Year | $19.99 | per year |
| Calendars PRO 1 Year | $19.99 | per year |
| Calendars PRO 1 Year | $21.99 | per year |
| Smart Input Upgrade | $1.99 | one-time |
| My schedule planner, Organizer | $6.99 | one-time |
| Full Pack | $12.99 | one-time |
| Recurring Events | $31.99 | one-time |

**What reviewers like**

- 🌟 Excellent calendar app
- 👍 Easy to use and organize
- 🎨 Helpful color-coding
- 📆 Seamless integration with other calendars
- 🗓️ Detailed monthly/weekly views

**What reviewers complain about**

- 🐛 Occasional glitches and data loss
- 💰 Concerns over subscription model
- 🕰️ Cumbersome date/time selection process
- 🔍 Limited location search functionality
- 🔄 Sync issues between devices

**Reported bugs**

- Disappearing events and appointments
- Upgrade process causing data loss
- Freezing and crashing on certain devices

**Requested features**

- Recurring events for free users
- Customizable widgets and app icons
- Ability to archive/restore past events
- Improved Apple Watch integration
- Shared calendars and family management


### InstantQuiz

[App page](https://appshunter.io/ios/app/instantquiz/id6743656134)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calendars free?

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

### Is InstantQuiz free?

InstantQuiz costs $3.99, with no in-app purchases.

### Do Calendars or InstantQuiz have ads?

Neither Calendars nor InstantQuiz shows ads.

### Which is updated more often, Calendars or InstantQuiz?

Calendars ships an update weekly, and InstantQuiz every 5 months. Most recently, Calendars was updated on November 12, 2026 and InstantQuiz on September 29, 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.*