# MEG Surveyor vs Uni.Day

The clearest difference is in-app purchases: MEG Surveyor at none against Uni.Day's 1. MEG Surveyor also leads on ads (none vs shown). Uni.Day's advantage is update cadence (every 4 days vs every 10 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Uni.Day sells 1 one-off in-app purchase. MEG Surveyor asks for nothing beyond the download.

MEG Surveyor ships an update every 10 days, Uni.Day every 4 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | MEG Surveyor | Uni.Day |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 days | **Every 4 days** |
| Size | 38 MB | 57 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Machester Energy Grants](https://appshunter.io/developer/1737984435) | [SANG DON LEE](https://appshunter.io/developer/1684483479) |

## What reviewers say

### MEG Surveyor

[App page](https://appshunter.io/ios/app/meg-surveyor/id6480045355)

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

**In-app purchases:** none


### Uni.Day

[App page](https://appshunter.io/ios/app/uniday/id6503352962)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is MEG Surveyor free?

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

### Is Uni.Day free?

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

### Do MEG Surveyor or Uni.Day have ads?

Uni.Day shows ads; MEG Surveyor does not.

### Which is updated more often, MEG Surveyor or Uni.Day?

MEG Surveyor ships an update every 10 days, and Uni.Day every 4 days. Most recently, MEG Surveyor was updated on October 25, 2026 and Uni.Day on October 25, 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.*