# Bubble Spy vs Trio Math

The clearest difference is in-app purchases: Bubble Spy at none against Trio Math's 2. Trio Math's advantage is ads (none vs shown) and iOS requirement (13.0 vs 15.6). On price and device support there is nothing between them.

Both are free to download. Trio Math sells 2 one-off in-app purchases. Bubble Spy asks for nothing beyond the download.

## The numbers

| Metric | Bubble Spy | Trio Math |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 4 days |
| Monetization | — | Free with in-app purchases |
| Size | 134 MB | 123 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ajay Soni](https://appshunter.io/developer/1712578170) | [CHRISTIAN KNOLL](https://appshunter.io/developer/1796167358) |

## What reviewers say

### Bubble Spy

[App page](https://appshunter.io/ios/app/bubble-spy/id6739711712)

**Features:** macOS Compatibility

**In-app purchases:** none


### Trio Math

[App page](https://appshunter.io/ios/app/trio-math/id6741913788)

Sharpen your mental math skills by finding number combinations that equal a target number. Each combination must use one multiplication and one addition or subtraction. Compete globally and enjoy a privacy-friendly, ad-free experience.

**Highlights:** Number grid puzzles, Multiplication and addition/subtraction required, Daily Challenge Mode, Global Leaderboard, Jokers for hints, Ad-free and privacy-friendly

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MinusTrio - Espresso | $1.99 | one-time |
| MinusTrio - Cappuccino | $2.99 | one-time |


## Frequently asked questions

### Is Bubble Spy free?

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

### Is Trio Math free?

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

### Do Bubble Spy or Trio Math have ads?

Bubble Spy shows ads; Trio Math does not.

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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.*