# RainbowFish Portfolio vs ZigZu

The clearest difference is in-app purchases: RainbowFish Portfolio at none against ZigZu's 4. ZigZu's advantage is update cadence (fortnightly vs every 5 months) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. ZigZu sells 4 in-app purchases, starting at $4.99 per month. RainbowFish Portfolio asks for nothing beyond the download.

RainbowFish Portfolio ships an update every 5 months, ZigZu fortnightly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | RainbowFish Portfolio | ZigZu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/zigzu-phonics-reading-coach/id6761497371/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | — | Free |
| Size | 21 MB | 225 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rainbowfish Studio Private Limited](https://appshunter.io/developer/1680451255) | [ANA Playlabs Global Private Limited](https://appshunter.io/developer/1889964003) |

## What reviewers say

### RainbowFish Portfolio

[App page](https://appshunter.io/ios/app/rainbowfish-portfolio/id6447163605)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### ZigZu

[App page](https://appshunter.io/ios/app/zigzu-phonics-reading-coach/id6761497371)

This AI-powered reading coach listens to children read aloud, identifies missed words, and teaches them using phonics in Indian English. It adapts to each child's reading level, offering sticker rewards and daily streaks to encourage practice.

**Highlights:** AI-powered listening and feedback, Phonics-based word teaching, Indian English pronunciation, Adaptive reading levels, Sticker rewards and daily streaks, Ad-free and safe for kids

**Features:** macOS Compatibility, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ZigZu Premium Monthly | $4.99 | per month |
| ZigZu Premium Monthly | $4.99 | per month |
| ZigZu Premium Yearly | $29.99 | per year |
| ZigZu Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is RainbowFish Portfolio free?

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

### Is ZigZu free?

ZigZu is free to download, with in-app purchases available.

### Do RainbowFish Portfolio or ZigZu have ads?

Neither RainbowFish Portfolio nor ZigZu shows ads.

### Which is updated more often, RainbowFish Portfolio or ZigZu?

RainbowFish Portfolio ships an update every 5 months, and ZigZu fortnightly. Most recently, RainbowFish Portfolio was updated on October 25, 2026 and ZigZu on October 31, 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.*