# CalendarRef vs Teller1

CalendarRef and Teller1 are too close to call on the numbers: across 8 compared parameters — price, rating, ratings volume and ads among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for CalendarRef against 5.0 for Teller1. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

## The numbers

| Metric | CalendarRef | Teller1 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/calendarref/id6749834885/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/teller1/id6789772620/reviews) |
| Number of ratings | 1 | **2** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 4 days |
| Monetization | Free | Free |
| Size | 1 MB | 2 MB |
| Requires iOS | 18.5 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Derrick Braga](https://appshunter.io/developer/1832376581) | [This is GroundBreaking B.V.](https://appshunter.io/developer/6774911836) |

## What reviewers say

### CalendarRef

[App page](https://appshunter.io/ios/app/calendarref/id6749834885)

This app provides a fast, minimalist calendar reference for quickly finding the day of the week for any date. It offers full-year and monthly views with clean layouts, supporting BCE/CE years and accurate historical calendar conversions. It works offline without ads or tracking.

**Highlights:** Full-year view, Monthly layouts, Instant year navigation, BCE/CE year support, Julian/Gregorian calendar handling, Optional date highlights, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


### Teller1

[App page](https://appshunter.io/ios/app/teller1/id6789772620)

Create visually stunning countdowns for any event, complete with dynamic backgrounds and celebratory animations. Track progress in days, hours, minutes, and seconds, and share moments with others. Integrates with Siri and your calendar for easy setup.

**Highlights:** Dynamic event-specific backgrounds, Detailed progress tracking (days, hours, minutes, seconds), Celebratory animations and haptic feedback, Home screen widgets and Dynamic Island integration, Shared countdowns via iCloud, Siri and calendar import

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

**In-app purchases:** none


## Frequently asked questions

### Is CalendarRef free?

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

### Is Teller1 free?

Teller1 is free to download, with no in-app purchases.

### Which has better reviews, CalendarRef or Teller1?

CalendarRef and Teller1 are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do CalendarRef or Teller1 have ads?

Neither CalendarRef nor Teller1 shows ads.

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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.*