# Cautionary vs Spark

The clearest difference is price: Spark at Free against Cautionary's $0.99. Cautionary's advantage is in-app purchases (none vs 1) and update cadence (every 3 days vs every 8 days). On ads there is nothing between them.

Spark is free to download; Cautionary costs $0.99 up front. Spark sells 1 one-off in-app purchase. Cautionary asks for nothing beyond the download.

Cautionary ships an update every 3 days, Spark every 8 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Cautionary | Spark |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 8 days |
| Size | 11 MB | 5 MB |
| Requires iOS | **16.4** | 18.5 |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [辉章 何](https://appshunter.io/developer/1687027088) | [功亮 张](https://appshunter.io/developer/1826484363) |

## What reviewers say

### Cautionary

[App page](https://appshunter.io/ios/app/cautionary/id6451156147)

**Features:** Vision Pro support

**In-app purchases:** none


### Spark

[App page](https://appshunter.io/ios/app/spark-save-your-inspiration/id6748610782)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 灵光一现专业版 | $0.99 | one-time |


## Frequently asked questions

### Is Cautionary free?

Cautionary costs $0.99, with no in-app purchases.

### Is Spark free?

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

### Do Cautionary or Spark have ads?

Neither Cautionary nor Spark shows ads.

### Which is updated more often, Cautionary or Spark?

Cautionary ships an update every 3 days, and Spark every 8 days. Most recently, Cautionary was updated on November 3, 2026 and Spark on November 5, 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.*