Idle Spirits vs Arithmedash
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Idle Spirits
Summon, merge, and collect pixel-art spirits to build a thriving sanctuary. Your spirits gather resources even when you're away, ensuring progress. Enjoy a dynamic world with changing weather, special events, and a classic block-breaker mode.
- Summon and merge 24 pixel-art spirits
- Grow and upgrade elemental homes
- Offline progress for up to 24 hours
- Dynamic world with real-time weather and events
- Star Return (prestige) system
- Classic block-breaker mini-game
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An idle game where you summon pixel-art spirits, merge them, and grow a little sanctuary. Your spirits keep gathering mana while the app is closed, so the sanctuary is a bit livelier every time you come back. ◆ SUMMON AND MERGE Meet 24 spirits across six elements: Grove, Tide, Gale, Ember, Lumen and Umbra. Put two of the same spirit together and they merge, growing from little to grown to elder. Merging roughly doubles their output and frees up a home, so there's never a bad time to merge. ◆ GROW THEIR HOMES Level up a home for each element (a tree house, a spring, a windmill, a hearth, a light altar and a moon shrine) to house more spirits and boost production. The pixel art of each building changes as it grows. Spirits living in their own element's home produce twice as much. ◆ PROGRESS WHILE AWAY Production continues while the app is closed (up to 8 hours at first, 24 hours with research). Collect it all when you return. ◆ A LIVING WORLD Morning, day, dusk and night follow your real clock, with rain, wind, fog, snow and rainbow days. The time and weather change which elements shine. Shooting stars, wandering visitors, merchants and musicians, festivals that boost production 7x, and the Murk, a boss you tap to purify, all drop by now and then. ◆ BUILT TO LAST - Star Return (prestige): gather starlight and raise all production - Send spirits into the Deep to bring back dew and legend shards - 11 Star Book research upgrades, elemental awakening and 6 x 5 constellations - 6 legendary spirits and rare shiny variants (1%) - Complete the Spiritdex to earn elemental blessings ◆ MUSIC 55 original tracks that change with the scene, plus a jukebox to pick your favorite. You can also layer a 40Hz tone in settings. ◆ CLASSIC The original Idle Spirits block-breaker is still here as Classic in the menu, with all your collection records intact. Every sprite is drawn pixel by pixel with a hand-built rasterizer. Take your time and grow your own sanctuary.
Arithmedash
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Arithmedash is a fast-paced runner game that makes math practice fun for kids. Jump over obstacles, dodge saws and spikes, and collect stars as you race through colorful neon-themed levels. Along the way, math question blocks challenge players with multiplication, division, addition, and subtraction problems. Answer quickly for shields and bonus multipliers, but get it wrong and you're back to the start! Features: - 20 unique levels with vibrant arcade-style themes - 3 difficulty settings for different skill levels - Adaptive math questions that adjust to your child's ability - 9 customisable character shapes - Star collection and progressive level unlocking - Parent Insights dashboard to track accuracy, response times, and progress by math topic Built for kids of all ages, Arithmedash turns screen time into learning time. Can you collect all the stars and complete every level?
Screenshots
Verdict
The clearest difference is ads: Arithmedash at none against Idle Spirits's shown. Arithmedash also leads on update cadence (every 2 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Idle Spirits ships an update every 3 weeks, Arithmedash every 2 days. The most recent releases landed on October 9, 2026 and September 28, 2026 respectively.
| Parameter | Idle Spirits | Arithmedash |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 179 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | KeiK LLC | Amersham Websites Limited |
In-app purchases
Idle Spirits
No in-app purchases
Arithmedash
No in-app purchases









