# OtterDay vs OtterLearn

The clearest difference is ads: OtterLearn at none against OtterDay's shown. OtterDay's advantage is iOS requirement (15.6 vs 17.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. OtterDay sells 3 one-off in-app purchases and OtterLearn sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

OtterDay ships an update every 2 weeks, OtterLearn monthly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OtterDay | OtterLearn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/otterday-calendar-logic-game/id6747994124/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 162 MB | 57 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Felix Manuel Plagge](https://appshunter.io/developer/1823761397) | [OtterCore, LLC](https://appshunter.io/developer/1896572125) |

## What reviewers say

### OtterDay

[App page](https://appshunter.io/ios/app/otterday-calendar-logic-game/id6747994124)

Learn to quickly calculate the day of the week for any date using a mental superpower. Engage in a puzzle adventure with otter guides, mastering the "date trick" through interactive challenges and tracking your progress.

**Highlights:** Interactive otter guides, Learn the date trick step-by-step, Two game modes: written and spoken dates, Achievements for speed and precision, Progress tracking for streaks and times, Works for dates from 1750 to the far future

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Core | $5.99 | one-time |
| Core To Pro | $5.99 | one-time |
| Pro | $6.99 | one-time |


### OtterLearn

[App page](https://appshunter.io/ios/app/otterlearn/id6792960000)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $4.99 | per month |
| Premium Yearly | $29.99 | per year |
| OtterLearn Forever | $59.99 | one-time |


## Frequently asked questions

### Is OtterDay free?

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

### Is OtterLearn free?

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

### Do OtterDay or OtterLearn have ads?

OtterDay shows ads; OtterLearn does not.

### Which is updated more often, OtterDay or OtterLearn?

OtterDay ships an update every 2 weeks, and OtterLearn monthly. Most recently, OtterDay was updated on October 30, 2026 and OtterLearn on October 31, 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.*