# MathematicMN vs OurEra

The clearest difference is in-app purchases: MathematicMN at none against OurEra's 3. OurEra's advantage is update cadence (weekly vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. OurEra sells 3 in-app purchases, starting at $8.99 per month. MathematicMN asks for nothing beyond the download.

MathematicMN ships an update every 3 weeks, OurEra weekly. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MathematicMN | OurEra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 28 MB | 44 MB |
| Requires iOS | 18.2 | **18.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Khash-erdene Baasankhuu](https://appshunter.io/developer/1840554444) | [Huong Le Dieu](https://appshunter.io/developer/1858878738) |

## What reviewers say

### MathematicMN

[App page](https://appshunter.io/ios/app/mathematicmn/id6758903613)

**Features:** macOS Compatibility

**In-app purchases:** none


### OurEra

[App page](https://appshunter.io/ios/app/ourera-love-day-counter/id6808501771)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $8.99 | per month |
| Premium Yearly | $44.99 | per year |
| Premium Lifetime | $119.99 | one-time |


## Frequently asked questions

### Is MathematicMN free?

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

### Is OurEra free?

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

### Do MathematicMN or OurEra have ads?

Neither MathematicMN nor OurEra shows ads.

### Which is updated more often, MathematicMN or OurEra?

MathematicMN ships an update every 3 weeks, and OurEra weekly. Most recently, MathematicMN was updated on November 9, 2026 and OurEra 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.*