# SynScan vs e

The clearest difference is update cadence: SynScan at every 2 months against e's every 5 months. On price, ads, in-app purchases and device support there is nothing between them.

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

SynScan ships an update every 2 months, e every 5 months. The most recent releases landed on September 16, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | SynScan | e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (8 ratings)](https://appshunter.io/ios/app/synscan/id1243086631/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | Free | — |
| Size | 46 MB | 36 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Astropower Technology Co. Ltd.](https://appshunter.io/developer/1787940478) | [Hangzhou Saiwei Motor Co.,ltd](https://appshunter.io/developer/1822018254) |

## What reviewers say

### SynScan

[App page](https://appshunter.io/ios/app/synscan/id1243086631)

Control motorized telescope mounts for celestial object tracking and exploration. Features include GOTO functionality, object catalogs, and gamepad navigation. Ideal for novice users with alt-azimuth mounts.

**Highlights:** Control telescope mount slew, align, GOTO, and track, Point and Track celestial objects, Support gamepad navigation, Browse and save celestial object catalogs, Third-party app integration (ASCOM, SkySafari, Stellarium), Emulator mount for testing

**Features:** macOS Compatibility

**In-app purchases:** none


### e

[App page](https://appshunter.io/ios/app/e-combell/id6747609957)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SynScan free?

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

### Is e free?

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

### Do SynScan or e have ads?

Neither SynScan nor e shows ads.

### Which is updated more often, SynScan or e?

SynScan ships an update every 2 months, and e every 5 months. Most recently, SynScan was updated on September 16, 2026 and e on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*