# HackStack vs Singularity Inc.

The clearest difference is iOS requirement: Singularity Inc. at 15.1 against HackStack's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. HackStack sells 4 one-off in-app purchases and Singularity Inc. sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

HackStack ships an update weekly, Singularity Inc. every 8 days. The most recent releases landed on October 3, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | HackStack | Singularity Inc. |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 8 days |
| Size | 68 MB | 103 MB |
| Requires iOS | 17.6 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Jacob Woodfield](https://appshunter.io/developer/1889214907) | [Raman Bahdanovich](https://appshunter.io/developer/6786058290) |

## What reviewers say

### HackStack

[App page](https://appshunter.io/ios/app/hackstack/id6761376937)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Banner Ads | $2.99 | one-time |
| Remove Offline Ads | $2.99 | one-time |
| Remove Ops Ads | $2.99 | one-time |
| Remove All Ads | $6.99 | one-time |


### Singularity Inc.

[App page](https://appshunter.io/ios/app/singularity-inc/id6786058288)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is HackStack free?

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

### Is Singularity Inc. free?

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

### Do HackStack or Singularity Inc. have ads?

Both HackStack and Singularity Inc. show ads.

### Which is updated more often, HackStack or Singularity Inc.?

HackStack ships an update weekly, and Singularity Inc. every 8 days. Most recently, HackStack was updated on October 3, 2026 and Singularity Inc. on October 12, 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.*