Comparison

PROTOCOL vs Summon Collector

Price, ratings, monetisation and update history for both games, side by side โ€” with what reviewers say about each.

Head to head
About

PROTOCOL

Features
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The day dimensional rifts opened, monsters and the Dimension Awakened appeared at the same time. As monsters spread across the world, the government gathered students with dimensional powers and established the Tactical Academy. Become its commander, train your students, and deploy to a city under threat. Control the leader directly and give orders to two fellow agents. Combine their abilities, weapons, and parts to lead a three-person squad. โ€ข Survive the waves of monsters. โ€ข Train distinctive students and build your squad. โ€ข Find powerful combinations, overcome each battle, and protect the city. A two-person indie game. PROTOCOL: Zero Rift

About

Summon Collector

Features
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A laid-back idle summon & collection game. Tap orbs to summon spirits and grow your collection across multiple rarities. The more you collect, the more efficient your summons get, and progress keeps building while you're away โ€” designed for chip-away-daily play. How to play - Tap to summon; new spirits join your collection book - Three parallel summon slots โ€” check in whenever - Level up summon speed and rarity drop rates for the long haul - Offline progression (up to 2 hours) keeps you moving forward - Watch a video for 2x rewards / optional remove-ads IAP - Japanese / English supported Who it's for - Anyone who wants something to chip away at in spare moments - Collectors who enjoy chasing rare drops over the long term - Players who prefer idle progression over active battle Bite-sized for a quick check, with depth for the long term โ€” at your pace.

Screenshots

PROTOCOL4 screens
Summon Collector4 screens

Verdict

The call

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

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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.

UpkeepUpdate frequency

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.

ScorecardNo meaningful differences
PROTOCOL versus Summon Collector: the parameters behind the verdict, then further details
ParameterPROTOCOLSummon Collector
PriceFreeFree
Update frequencyEvery 3 daysEvery 2 days โ€” better
AdsYesYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS15.014.0 โ€” better
Further details โ€” not scored
Size258 MB105 MB
Age rating9+4+
DeveloperSungGwon HanSHOTA OHTSUKA

In-app purchases

10 purchases

PROTOCOL

One-time10
  • Beginner Package 1$0.99
  • Sale Package 3$1.99
  • Sale Package 1$2.99
Show 7 more
  • Sale Package 2$4.99
  • Beginner Package 2$4.99
  • Remove Ad$5.99
  • Daily Special Mission Ticket$7.99
  • Mission Energy Booster (30 Days)$9.99
  • Stage Pass$9.99
  • Beginner Package 3$14.99
2 purchases

Summon Collector

One-time2
  • 2x Summon Speed$1.99
  • Remove Ads$2.99

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.

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