# Call2U vs SolarAI

The clearest difference is review sentiment: SolarAI at 100% against Call2U's 0%. SolarAI also leads on update cadence (every 5 weeks vs every 6 months). Call2U's advantage is iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Call2U ships an update every 6 months, SolarAI every 5 weeks. The most recent releases landed on October 21, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Call2U | SolarAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/solarai/id6471643296/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 18 MB | 78 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [URMET SpA](https://appshunter.io/developer/380918208) | [Solar AI Technologies LLC](https://appshunter.io/developer/1715776962) |

## What reviewers say

### Call2U

[App page](https://appshunter.io/ios/app/call2u/id1000557721)

Forward calls from an Ipervoice system to your mobile device. Answer calls, control door or car entrance access, and temporarily mute your microphone.

**Highlights:** Call forwarding, Answer calls remotely, Door/entrance access control, Temporary microphone mute, Ipervoice system integration

**Features:** macOS Compatibility

**In-app purchases:** none


### SolarAI

[App page](https://appshunter.io/ios/app/solarai/id6471643296)

Monitor and manage your SolarAI compatible smart energy devices from anywhere. Utilize AI to optimize energy efficiency, track consumption and production in real-time, and automate smart home devices for improved savings.

**Highlights:** Real-time energy consumption and production monitoring, AI-driven energy efficiency identification, Smart home device automation, Improved device health insights, Remote device management

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Call2U free?

Call2U is free to download, with no in-app purchases.

### Is SolarAI free?

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

### Do Call2U or SolarAI have ads?

Neither Call2U nor SolarAI shows ads.

### Which is updated more often, Call2U or SolarAI?

Call2U ships an update every 6 months, and SolarAI every 5 weeks. Most recently, Call2U was updated on October 21, 2026 and SolarAI on October 16, 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.*