# NumTrail vs Only When Green

The clearest difference is in-app purchases: Only When Green at none against NumTrail's 1. Only When Green also leads on update cadence (every 4 days vs every 6 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. NumTrail sells 1 one-off in-app purchase. Only When Green asks for nothing beyond the download.

NumTrail ships an update every 6 weeks, Only When Green every 4 days. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | NumTrail | Only When Green |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (6 ratings)](https://appshunter.io/ios/app/numtrail/id6755704177/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | — |
| Size | 148 MB | 97 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SUCCESS Corporation](https://appshunter.io/developer/375717327) | [IMEDSENSE SDN. BHD.](https://appshunter.io/developer/1849974114) |

## What reviewers say

### NumTrail

[App page](https://appshunter.io/ios/app/numtrail/id6755704177)

Navigate a number maze by strategically using every digit to reach the goal. This puzzle game offers over 200 free stages with daily additions, and more can be unlocked with an additional purchase. It's designed for quick sessions or deep concentration, suitable for all ages.

**Highlights:** Over 200 free stages, Daily new puzzles, Expandable to over 800 stages, Strategy and logic-based gameplay, Multiple solutions per puzzle, Brain-training challenges

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads + Extra Puzzles | $3.99 | one-time |


### Only When Green

[App page](https://appshunter.io/ios/app/only-when-green/id6780594103)

**In-app purchases:** none


## Frequently asked questions

### Is NumTrail free?

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

### Is Only When Green free?

Only When Green is free to download, with no in-app purchases.

### Do NumTrail or Only When Green have ads?

Both NumTrail and Only When Green show ads.

### Which is updated more often, NumTrail or Only When Green?

NumTrail ships an update every 6 weeks, and Only When Green every 4 days. Most recently, NumTrail was updated on October 8, 2026 and Only When Green on October 9, 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.*