# Nitro Swim vs Willo

The clearest difference is review sentiment: Nitro Swim at 100% against Willo's 33%. Nitro Swim also leads on rating (5.0 vs 3.4) and iOS requirement (15.1 vs 17). On price, ratings volume, update cadence and ads there is nothing between them.

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

Nitro Swim holds the better App Store score, 5.0 against 3.4. Both are backed by a comparable volume of ratings — 5 and 10 respectively. Written reviews point the same way: 100% of Nitro Swim's written reviews are positive against 33% of Willo's.

Nitro Swim ships an update every 5 weeks, Willo every 3 weeks. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Nitro Swim | Willo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/nitro-swim/id1483784349/reviews)** | [3.4 (10 ratings)](https://appshunter.io/ios/app/willo/id6736669957/reviews) |
| Number of ratings | 5 | **10** |
| Positive reviews | **100.0% of reviews** | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 58 MB | 190 MB |
| Requires iOS | **15.1** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Nitro Swimming Bee Cave, LLC](https://appshunter.io/developer/1483784348) | [Willo 32, INC](https://appshunter.io/developer/1459638748) |

## What reviewers say

### Nitro Swim

[App page](https://appshunter.io/ios/app/nitro-swim/id1483784349)

Track your swimmer's progress, view class schedules, and register for swimming lessons. Receive push notifications to stay updated on class availability and your child's development. Experience a unique approach to learning to swim.

**Highlights:** View class schedules, Check swimmer progress, Register for classes, Push notifications, Class availability updates

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Willo

[App page](https://appshunter.io/ios/app/willo/id6736669957)

This app helps make brushing teeth fun for children with interactive timers and achievement levels. Parents can monitor brushing habits and set up reward systems for their kids to encourage consistent oral hygiene.

**Highlights:** Fun brushing timers, Achievement levels, Track brushing habits, Add rewards for kids, Encourage oral hygiene

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nitro Swim free?

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

### Is Willo free?

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

### Which has better reviews, Nitro Swim or Willo?

Nitro Swim is rated higher. Nitro Swim averages 5.0 out of 5 from 5 ratings, while Willo averages 3.4 from 10 ratings.

### Do Nitro Swim or Willo have ads?

Neither Nitro Swim nor Willo shows ads.

### Which is updated more often, Nitro Swim or Willo?

Nitro Swim ships an update every 5 weeks, and Willo every 3 weeks. Most recently, Nitro Swim was updated on October 6, 2026 and Willo on October 24, 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.*