# NumFinder vs Chess Notation Trainer Pro

The clearest difference is price: NumFinder at Free against Chess Notation Trainer Pro's $4.99. Chess Notation Trainer Pro's advantage is ads (none vs shown). On update cadence, in-app purchases, device support and iOS requirement there is nothing between them.

NumFinder is free to download; Chess Notation Trainer Pro costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

NumFinder ships an update every 5 days, Chess Notation Trainer Pro every 6 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | NumFinder | Chess Notation Trainer Pro |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 6 days |
| Monetization | Ad-supported | — |
| Size | 5 MB | 26 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Minseong Kim](https://appshunter.io/developer/1707019155) | [Nishat Majid](https://appshunter.io/developer/1727207034) |

## What reviewers say

### NumFinder

[App page](https://appshunter.io/ios/app/numfinder/id6468962757)

This game helps improve focus by challenging players to find numbers in sequence. It offers five difficulty levels and a progress bar timer for enhanced concentration. Players can track their highest scores and aim for new personal bests.

**Highlights:** Number sequence finding gameplay, Five difficulty levels, Progress bar timer, Highest score tracking, Distraction-free experience

**Features:** macOS Compatibility

**In-app purchases:** none


### Chess Notation Trainer Pro

[App page](https://appshunter.io/ios/app/chess-notation-trainer-pro/id6478752238)

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

**In-app purchases:** none


## Frequently asked questions

### Is NumFinder free?

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

### Is Chess Notation Trainer Pro free?

Chess Notation Trainer Pro costs $4.99, with no in-app purchases.

### Do NumFinder or Chess Notation Trainer Pro have ads?

NumFinder shows ads; Chess Notation Trainer Pro does not.

### Which is updated more often, NumFinder or Chess Notation Trainer Pro?

NumFinder ships an update every 5 days, and Chess Notation Trainer Pro every 6 days. Most recently, NumFinder was updated on October 30, 2026 and Chess Notation Trainer Pro on October 30, 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.*