# SPM Connect vs Shadowspec

The clearest difference is update cadence: SPM Connect at every 4 months against Shadowspec's every 21 months. Shadowspec's advantage is iOS requirement (12.0 vs 26.0). 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.

SPM Connect ships an update every 4 months, Shadowspec every 21 months. The most recent releases landed on October 8, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | SPM Connect | Shadowspec |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/shadowspec/id1540020046/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 21 months |
| Monetization | — | Free |
| Size | 5 MB | 29 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SPM Instrument AB](https://appshunter.io/developer/578558155) | [Unicrest Group Limited](https://appshunter.io/developer/1540020048) |

## What reviewers say

### SPM Connect

[App page](https://appshunter.io/ios/app/spm-connect/id1469079405)

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

**In-app purchases:** none


### Shadowspec

[App page](https://appshunter.io/ios/app/shadowspec/id1540020046)

Control your smart battery and lights with this app. Features include auto timers, dimmer settings, and countdown functionality. Manage multiple devices from a single interface.

**Highlights:** Auto timer functions, Dimmer settings, Countdown timer, On and off switch, Control multiple lights and umbrellas

**In-app purchases:** none


## Frequently asked questions

### Is SPM Connect free?

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

### Is Shadowspec free?

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

### Do SPM Connect or Shadowspec have ads?

Neither SPM Connect nor Shadowspec shows ads.

### Which is updated more often, SPM Connect or Shadowspec?

SPM Connect ships an update every 4 months, and Shadowspec every 21 months. Most recently, SPM Connect was updated on October 8, 2026 and Shadowspec on October 2, 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.*