# Adopt vs Sparka

The clearest difference is in-app purchases: Adopt at none against Sparka's 2. Sparka's advantage is update cadence (every 2 weeks vs every 40 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Sparka sells 2 in-app purchases, starting at $2.99 per 7 days. Adopt asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Adopt against 5.0 for Sparka. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Adopt ships an update every 40 months, Sparka every 2 weeks. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Adopt | Sparka |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/adopt-a-float/id1473875623/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/sparka-learn-ai-prompting/id6749868910/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 2 weeks** |
| Monetization | **Free** | Freemium |
| Size | 1 MB | 16 MB |
| Requires iOS | **17.5** | 18.2 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Frederik Simons](https://appshunter.io/developer/1687712314) | [Connor Hammond](https://appshunter.io/developer/1575250278) |

## What reviewers say

### Adopt

[App page](https://appshunter.io/ios/app/adopt-a-float/id1473875623)

Access real-time data from autonomous oceanographic floats that record seismic activity. View instrument locations, trajectories, and health parameters. This app provides a low-cost method for oceanic data collection.

**Highlights:** View MERMAID instrument locations, Access recent trajectories, Obtain ocean depth information, View instrumental metadata, Identify instruments by name and institution

**Features:** macOS Compatibility

**In-app purchases:** none


### Sparka

[App page](https://appshunter.io/ios/app/sparka-learn-ai-prompting/id6749868910)

Master AI prompting to achieve expert-level results from AI tools. This app guides you through creating specific prompts by answering a few questions, helping you understand what makes prompts effective and build a library of your best work.

**Highlights:** Master AI prompt creation, Get expert-level AI results, Turn vague requests into specific prompts, Learn why prompt changes matter, Save and reuse prompts, Built by certified prompt engineers

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sparka Pro - Weekly | $2.99 | per 7 days |
| Sparka Pro - Annual | $99.99 | per year |


## Frequently asked questions

### Is Adopt free?

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

### Is Sparka free?

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

### Which has better reviews, Adopt or Sparka?

Adopt and Sparka are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do Adopt or Sparka have ads?

Neither Adopt nor Sparka shows ads.

### Which is updated more often, Adopt or Sparka?

Adopt ships an update every 40 months, and Sparka every 2 weeks. Most recently, Adopt was updated on October 12, 2026 and Sparka on October 6, 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.*