# VIEA Summit vs Cleantech Forums

The clearest difference is update cadence: Cleantech Forums at every 2 weeks against VIEA Summit's monthly. VIEA Summit's advantage is iOS requirement (12.0 vs 17.0). 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.

VIEA Summit ships an update monthly, Cleantech Forums every 2 weeks. The most recent releases landed on September 28, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | VIEA Summit | Cleantech Forums |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 83 MB | 72 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [vFairs LLC](https://appshunter.io/developer/1349888986) | [CTG:I LLC](https://appshunter.io/developer/1771675672) |

## What reviewers say

### VIEA Summit

[App page](https://appshunter.io/ios/app/viea-summit/id6464550557)

**Features:** macOS Compatibility

**In-app purchases:** none


### Cleantech Forums

[App page](https://appshunter.io/ios/app/cleantech-forums/id6736369386)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is VIEA Summit free?

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

### Is Cleantech Forums free?

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

### Do VIEA Summit or Cleantech Forums have ads?

Neither VIEA Summit nor Cleantech Forums shows ads.

### Which is updated more often, VIEA Summit or Cleantech Forums?

VIEA Summit ships an update monthly, and Cleantech Forums every 2 weeks. Most recently, VIEA Summit was updated on September 28, 2026 and Cleantech Forums on October 1, 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.*