# Sumward vs Slice Reactor

The clearest difference is update cadence: Slice Reactor at every 4 days against Sumward's every 3 weeks. Sumward's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sumward sells 3 in-app purchases, starting at $2.99 per month and Slice Reactor sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Sumward ships an update every 3 weeks, Slice Reactor every 4 days. The most recent releases landed on October 28, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Sumward | Slice Reactor |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Size | 137 MB | 9 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [StackForge Studios](https://appshunter.io/developer/1896315914) | [Ahmad AlBarqawi](https://appshunter.io/developer/1500625654) |

## What reviewers say

### Sumward

[App page](https://appshunter.io/ios/app/sumward-number-deckbuilder/id6779819435)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StackForge Play Pass Monthly | $2.99 | per month |
| StackForge Play Pass Annual | $14.99 | per year |
| Sumward Full Game Unlock | $4.99 | one-time |


### Slice Reactor

[App page](https://appshunter.io/ios/app/slice-reactor-space-reflex/id6782610372)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Supporter Pack | $2.99 | one-time |


## Frequently asked questions

### Is Sumward free?

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

### Is Slice Reactor free?

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

### Do Sumward or Slice Reactor have ads?

Neither Sumward nor Slice Reactor shows ads.

### Which is updated more often, Sumward or Slice Reactor?

Sumward ships an update every 3 weeks, and Slice Reactor every 4 days. Most recently, Sumward was updated on October 28, 2026 and Slice Reactor on October 21, 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.*