# Down to Zero vs iSay GRYB

The clearest difference is ads: iSay GRYB at none against Down to Zero's shown. iSay GRYB also leads on update cadence (every 2 months vs every 3 months). Down to Zero's advantage is iOS requirement (12.0 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Down to Zero sells 1 one-off in-app purchase and iSay GRYB sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Down to Zero ships an update every 3 months, iSay GRYB every 2 months. Both last shipped on October 3, 2026.

## The numbers

| Metric | Down to Zero | iSay GRYB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/down-to-zero/id952397806/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | — |
| Size | 92 MB | 11 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 9+ | 4+ |
| Developer | [Henrique Silva](https://appshunter.io/developer/492945915) | [Insane Platypus Games](https://appshunter.io/developer/467675044) |

## What reviewers say

### Down to Zero

[App page](https://appshunter.io/ios/app/down-to-zero/id952397806)

An addictive brain teaser game designed to enhance your IQ and cognitive skills. Progress through increasing difficulty levels and unlock 10 ranks, offering endless replayability and a fun mental workout.

**Highlights:** Easy to learn gameplay, Fun and addictive mechanics, 10 ranks to level up, Endless replay value, Brain exercise, IQ improvement

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |


### iSay GRYB

[App page](https://appshunter.io/ios/app/isay-gryb/id989573039)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |


## Frequently asked questions

### Is Down to Zero free?

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

### Is iSay GRYB free?

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

### Do Down to Zero or iSay GRYB have ads?

Down to Zero shows ads; iSay GRYB does not.

### Which is updated more often, Down to Zero or iSay GRYB?

Down to Zero ships an update every 3 months, and iSay GRYB every 2 months. Most recently, Down to Zero was updated on October 3, 2026 and iSay GRYB on October 3, 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.*