# UnivMap vs Sideris

The clearest difference is in-app purchases: UnivMap at none against Sideris's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Sideris sells 1 one-off in-app purchase. UnivMap asks for nothing beyond the download.

UnivMap ships an update every 9 days, Sideris every 10 days. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | UnivMap | Sideris |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 10 days |
| Size | 31 MB | 127 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [宇輝資訊有限公司](https://appshunter.io/developer/1888426874) | [Loris BERT](https://appshunter.io/developer/6809145520) |

## What reviewers say

### UnivMap

[App page](https://appshunter.io/ios/app/univmap/id6806794531)

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

**In-app purchases:** none


### Sideris

[App page](https://appshunter.io/ios/app/sideris-star-map-and-solver/id6809145518)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Plate Solving | $9.99 | one-time |


## Frequently asked questions

### Is UnivMap free?

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

### Is Sideris free?

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

### Do UnivMap or Sideris have ads?

Neither UnivMap nor Sideris shows ads.

### Which is updated more often, UnivMap or Sideris?

UnivMap ships an update every 9 days, and Sideris every 10 days. Most recently, UnivMap was updated on October 8, 2026 and Sideris on October 9, 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.*