# Spiral Letter vs NumbersOracle

The clearest difference is in-app purchases: Spiral Letter at none against NumbersOracle's 2. Spiral Letter also leads on iOS requirement (10.3 vs 16.4). NumbersOracle's advantage is ads (none vs shown) and update cadence (every 2 months vs every 54 months). On price and device support there is nothing between them.

Both are free to download. NumbersOracle sells 2 in-app purchases, starting at $4.99 per 3 months. Spiral Letter asks for nothing beyond the download.

Spiral Letter ships an update every 54 months, NumbersOracle every 2 months. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Spiral Letter | NumbersOracle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/spiral-letter/id973369797/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 54 months | **Every 2 months** |
| Monetization | Ad-supported | — |
| Size | 50 MB | 46 MB |
| Requires iOS | **10.3** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EIICHI KOMINE](https://appshunter.io/developer/495643581) | [Manevo](https://appshunter.io/developer/1837731092) |

## What reviewers say

### Spiral Letter

[App page](https://appshunter.io/ios/app/spiral-letter/id973369797)

Create visually striking messages by arranging text in a spiral. Customize sentence orientation, rotation direction, and even individual character colors for maximum impact. Express your thoughts with unique flair.

**Highlights:** Spiral text arrangement, Customizable sentence orientation, Adjustable rotation direction, Individual character font color setting, Add impact to messages

**Features:** Vision Pro support

**In-app purchases:** none


### NumbersOracle

[App page](https://appshunter.io/ios/app/numbersoracle-numerology/id6751968430)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 3 Months Access | $4.99 | per 3 months |
| Premium 6 Months Access | $8.99 | per 6 months |


## Frequently asked questions

### Is Spiral Letter free?

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

### Is NumbersOracle free?

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

### Do Spiral Letter or NumbersOracle have ads?

Spiral Letter shows ads; NumbersOracle does not.

### Which is updated more often, Spiral Letter or NumbersOracle?

Spiral Letter ships an update every 54 months, and NumbersOracle every 2 months. Most recently, Spiral Letter was updated on November 1, 2026 and NumbersOracle on October 28, 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.*