# efficy Mobile vs Rainbow AI

efficy Mobile and Rainbow AI are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

efficy Mobile ships an update every 3 months, Rainbow AI every 2 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | efficy Mobile | Rainbow AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 32 MB | 73 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Efficy](https://appshunter.io/developer/1208995011) | [Mano Labelle](https://appshunter.io/developer/1871881795) |

## What reviewers say

### efficy Mobile

[App page](https://appshunter.io/ios/app/efficy-mobile/id1540976547)

**In-app purchases:** none


### Rainbow AI

[App page](https://appshunter.io/ios/app/rainbow-ai/id6758268983)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is efficy Mobile free?

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

### Is Rainbow AI free?

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

### Do efficy Mobile or Rainbow AI have ads?

Neither efficy Mobile nor Rainbow AI shows ads.

### Which is updated more often, efficy Mobile or Rainbow AI?

efficy Mobile ships an update every 3 months, and Rainbow AI every 2 months. Most recently, efficy Mobile was updated on October 24, 2026 and Rainbow AI on October 15, 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.*