ArukuMon

Big Autumn Update (1.6)

Every step
hatches an adventure.

A pedometer RPG where your daily steps hatch eggs and raise monsters. Collect 86 monsters and battle with a party of up to 3.

Download free on the App Store

For iPhone and iPad / Free with in-app purchases

ArukuMon home screen showing today's steps and an egg about to hatch

No adsNothing gets in the way of your walk

Steps stay on your deviceYour Health step data is never sent out

Pick-a-nameTrainer names are made by choosing two words

WALK · HATCH · BATTLE

Every step moves the adventure forward.

Sparkly

Rarely, a monster hatches in a different color. Bigger eggs make it more likely — collect them in the Sparkly Compendium.

Battle

After your 10 daily rated battles, practice as much as you like without changing your rating. Battle a friend's party with a code.

Monthly wins

A monthly ranking of wins. When the month changes, get Gems based on your wins.

EVENTS

Events

Autumn Sparkle Festival

Nov 1–30, 2026 (Japan time)

Sparkly monsters are twice as likely from eggs and the Gacha (Gacha: 1/60 → 1/30).

Weekday events

Every day

Each day, eggs favor a different element.

GACHA

Gacha odds

The Gacha uses Gems (earned by playing or bought as in-app purchases). The same odds are shown on the Gacha screen in the app. Last updated: Oct 27, 2026

Rarity	Chance	Monsters	Each
SSR	5%	10	0.5%
SR	15%	7	2.1429%
R	35%	24	1.4583%
UC	30%	13	2.3077%
C	15%	13	1.1538%

Cost: Single Pull 150 Gems, 10-Pull 1,350 Gems.
Pity: after 39 pulls without an SSR, the 40th pull is a guaranteed SSR (the count resets when an SSR appears).
10-Pull: if none of the 10 monsters is SR or higher, the last one becomes an SR.
Within the same rarity, every monster has the same chance.
Sparkly: each pull has a 1/60 (about 1.6667%) chance to be Sparkly, regardless of rarity or monster. Sparkly monsters only change color; their strength is the same.
Star Piece exchange: SR Exchange (30 Star Pieces) gives one of the 7 SR monsters, and SSR Exchange (100 Star Pieces) one of the 10 SSR monsters, each with equal chance.

Odds change notice (Autumn Sparkle Festival)

From Nov 1, 2026 0:00 to Dec 1, 2026 0:00 (Japan time), the Gacha's Sparkly chance rises from 1/60 (about 1.6667%) to 1/30 (about 3.3333%). Rarity and per-monster odds do not change.

Monster list

SSR (0.5%): Fenikurea, Yugudorashia, Zephirode, Siegvolt, Leviamosu, Akuyamiou, Amatera, Yamatanoorochi, Tamamonomae, Ootengu

SR (2.1429%): Kagutsuchi, Gaiamosu, Tempesta, Ikazuchinokkami, Mizuchihime, Yaminooni, Byakko

R (1.4583%): Flamehorn, Magmadorago, Tsutakame, Jumokujin, Stormwolf, Fujinga, Thunderhawk, Raijuu, Koorigani, Kairyuuou, Yakinushi, Akajishi, Kinokoou, Hanaguma, Shirayukidori, Kazenogami, Kaminariougi, Denkiryu, Umihebi, Tsurarahime, Yomigarasu, Nue, Kinkitsune, Tenma

UC (2.3077%): Kajikitsune, Moriusagi, Hayatedori, Denkinezumi, Namiuo, Hitouba, Sasahane, Tengunoko, Raikitsune, Namazunoko, Kageusagi, Shirahato, Raikoma

C (1.1538%): Hinotama, Konohappa, Kazemaru, Biribirin, Shizukun, Magmaboe, Kokedama, Kamakirihime, Pikariishi, Shizukume, Kurokemuri, Hikaridama, Kokewarashi

ARUKUMON

Start your adventure
with today's first step.

View on the App Store

Step counting requires permission for Apple Health (HealthKit) on iPhone. Steps are not counted on iPad.