# Hololink vs Sum

The clearest difference is in-app purchases: Hololink at none against Sum's 2. Hololink also leads on iOS requirement (11.0 vs 13.0). Sum's advantage is ads (none vs shown) and update cadence (every 5 days vs every 3 months). On price and device support there is nothing between them.

Both are free to download. Sum sells 2 in-app purchases, starting at $4.99 per month. Hololink asks for nothing beyond the download.

Hololink ships an update every 3 months, Sum every 5 days. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Hololink | Sum |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 5 days** |
| Size | 55 MB | 32 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [蔚 季](https://appshunter.io/developer/1630349355) | [Aprilred SRL](https://appshunter.io/developer/1057855420) |

## What reviewers say

### Hololink

[App page](https://appshunter.io/ios/app/hololink/id1636820994)

**Features:** Game Controller support

**In-app purchases:** none


### Sum

[App page](https://appshunter.io/ios/app/sum-up/id6753583350)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $4.99 | per month |
| Yearly Premium Subscription | $35.99 | per year |


## Frequently asked questions

### Is Hololink free?

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

### Is Sum free?

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

### Do Hololink or Sum have ads?

Hololink shows ads; Sum does not.

### Which is updated more often, Hololink or Sum?

Hololink ships an update every 3 months, and Sum every 5 days. Most recently, Hololink was updated on October 7, 2026 and Sum on October 15, 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.*