# Theta vs Modem AI

The clearest difference is update cadence: Modem AI at every 7 months against Theta's every 31 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.

Theta ships an update every 31 months, Modem AI every 7 months. The most recent releases landed on October 3, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Theta | Modem AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 31 months | **Every 7 months** |
| Size | 8 MB | 42 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 17+ |
| Developer | [Mikhail Fedorov](https://appshunter.io/developer/714735606) | [Joe Mayo](https://appshunter.io/developer/1875822515) |

## What reviewers say

### Theta

[App page](https://appshunter.io/ios/app/theta-meter/id1541332058)

**In-app purchases:** none


### Modem AI

[App page](https://appshunter.io/ios/app/modem-ai/id6758928585)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Theta free?

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

### Is Modem AI free?

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

### Do Theta or Modem AI have ads?

Neither Theta nor Modem AI shows ads.

### Which is updated more often, Theta or Modem AI?

Theta ships an update every 31 months, and Modem AI every 7 months. Most recently, Theta was updated on October 3, 2026 and Modem AI on October 7, 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.*