# ThinkGrid vs ZEBRA

The clearest difference is update cadence: ZEBRA at fortnightly against ThinkGrid's every 3 months. ThinkGrid's advantage is iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ThinkGrid sells 5 in-app purchases, starting at $17.99 per year and ZEBRA sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ThinkGrid ships an update every 3 months, ZEBRA fortnightly. The most recent releases landed on October 17, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | ThinkGrid | ZEBRA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 40 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [De Appmakers](https://appshunter.io/developer/6774161186) | [torankirite](https://appshunter.io/developer/1883564850) |

## What reviewers say

### ThinkGrid

[App page](https://appshunter.io/ios/app/thinkgrid-calm-logic-puzzles/id6774161184)

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ThinkGrid Plus Yearly | $17.99 | per year |
| ThinkGrid Tip Espresso | $1.99 | one-time |
| ThinkGrid Tip Latte | $3.99 | one-time |
| ThinkGrid Tip Pot | $8.99 | one-time |
| ThinkGrid Plus Lifetime | $29.99 | one-time |


### ZEBRA

[App page](https://appshunter.io/ios/app/zebra-einsteins-riddle/id6799594286)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $4.99 | one-time |


## Frequently asked questions

### Is ThinkGrid free?

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

### Is ZEBRA free?

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

### Do ThinkGrid or ZEBRA have ads?

Neither ThinkGrid nor ZEBRA shows ads.

### Which is updated more often, ThinkGrid or ZEBRA?

ThinkGrid ships an update every 3 months, and ZEBRA fortnightly. Most recently, ThinkGrid was updated on October 17, 2026 and ZEBRA on October 20, 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.*