# PROTOCOL vs Summon Collector

PROTOCOL and Summon Collector are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. PROTOCOL sells 10 one-off in-app purchases and Summon Collector sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

PROTOCOL ships an update every 3 days, Summon Collector every 2 days. The most recent releases landed on October 19, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | PROTOCOL | Summon Collector |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 258 MB | 105 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [SungGwon Han](https://appshunter.io/developer/1117887913) | [SHOTA OHTSUKA](https://appshunter.io/developer/1893314876) |

## What reviewers say

### PROTOCOL

[App page](https://appshunter.io/ios/app/protocol-zero-rift/id6740158945)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Beginner Package 1 | $0.99 | one-time |
| Sale Package 3 | $1.99 | one-time |
| Sale Package 1 | $2.99 | one-time |
| Sale Package 2 | $4.99 | one-time |
| Beginner Package 2 | $4.99 | one-time |
| Remove Ad | $5.99 | one-time |
| Daily Special Mission Ticket | $7.99 | one-time |
| Mission Energy Booster (30 Days) | $9.99 | one-time |
| Stage Pass | $9.99 | one-time |
| Beginner Package 3 | $14.99 | one-time |


### Summon Collector

[App page](https://appshunter.io/ios/app/summon-collector/id6767090104)

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 2x Summon Speed | $1.99 | one-time |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is PROTOCOL free?

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

### Is Summon Collector free?

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

### Do PROTOCOL or Summon Collector have ads?

Both PROTOCOL and Summon Collector show ads.

### Which is updated more often, PROTOCOL or Summon Collector?

PROTOCOL ships an update every 3 days, and Summon Collector every 2 days. Most recently, PROTOCOL was updated on October 19, 2026 and Summon Collector on October 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*