# Lambda vs OpenSol

The clearest difference is update cadence: OpenSol at every 8 days against Lambda's every 5 weeks. OpenSol also leads on ratings volume (4 vs 1) and device support (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Lambda against 5.0 for OpenSol. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Lambda ships an update every 5 weeks, OpenSol every 8 days. The most recent releases landed on October 15, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Lambda | OpenSol |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/lambda-retro-with-friends/id6785801114/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/opensol/id6802088485/reviews) |
| Number of ratings | 1 | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 8 days** |
| Monetization | Free | Free |
| Size | 23 MB | 11 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [笛 姜](https://appshunter.io/developer/1561507357) | [Jordan Ruderman](https://appshunter.io/developer/6802088577) |

## What reviewers say

### Lambda

[App page](https://appshunter.io/ios/app/lambda-retro-with-friends/id6785801114)

This application allows users to play supported games with others on the same local network. Create rooms and connect with nearby players for a direct, low-latency multiplayer experience. It functions as a multi-system game emulator.

**Highlights:** LAN multiplayer support, Create game rooms, Connect with nearby players, Low-latency gameplay, Multi-system emulation

**Features:** macOS Compatibility, Family Sharing

**In-app purchases:** none


### OpenSol

[App page](https://appshunter.io/ios/app/opensol/id6802088485)

Experience a classic 8080 computer emulator inspired by the Sol-20 Terminal Computer. Interact with original firmware, customize display effects, and enjoy an immersive terminal experience. This independently developed app offers a unique retro computing simulation.

**Highlights:** Intel 8080 interpreter, Original OpenSol firmware, Sol Command Monitor, Customizable display effects (CRT, phosphor), Full-screen immersive mode, External keyboard and controller support, Virtual cassette tools

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Lambda free?

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

### Is OpenSol free?

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

### Which has better reviews, Lambda or OpenSol?

Lambda and OpenSol are both rated 5.0 out of 5 on the App Store, from 1 and 4 ratings respectively.

### Do Lambda or OpenSol have ads?

Neither Lambda nor OpenSol shows ads.

### Which is updated more often, Lambda or OpenSol?

Lambda ships an update every 5 weeks, and OpenSol every 8 days. Most recently, Lambda was updated on October 15, 2026 and OpenSol on October 8, 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.*