Idle Spirits vs One Left
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Idle Spirits
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Casual idle healing game with 40Hz brain-boosting BGM, immersive spatial audio, and spirit collection. ◆ 40Hz BGM for Brain Activation Features BGM containing 40Hz frequency, known to support brain health. Just listen to the meditation music while idling to relax and potentially boost brain function. ◆ Immersive Spatial Audio 80+ nature sounds with AVAudioEngine-powered reverb and spatial panning. Hear birds from the left, streams from the right. Each of the 10 stages has its own unique sound theme - forest, night, ocean, sakura, autumn, and rain. ◆ Simple Idle Gameplay No complex controls needed. Just tap the screen to collect spirits. Perfect for short breaks or bedtime relaxation. ◆ 57 Spirit Collection Meet diverse spirits across 10 beautiful stages, from forest fairies to cosmic beings. Register them in your collection book and enjoy tap effects. ◆ Healing Sound Features - 40Hz Meditation BGM: Frequency known for brain benefits - Healing Forest BGM: 4 soothing tracks - Overtone Bath: Ultimate relaxation experience - Sleep Timer: Perfect for bedtime - Ambient Soundscape: Nature sounds play between hits ◆ Two Modes [Chill Mode] Main mode for relaxed spirit collecting. Meet 57 spirits across 10 beautiful stages. [Survival Mode] Special mode unlocked after completing Chill Mode. Thrilling dash-to-survive gameplay. ◆ Stages - Healing Forest: Meet spirits in lush greenery - Bird Paradise: A space where beautiful birds dance - Firefly Night: In the midst of magical lights - Cherry Blossom Spring: Under falling petals - Autumn Twilight: A world dyed in sunset - Water Paradise: By refreshing waters - Crystal Cave: In mystical sparkles - Elemental Altar: Where four elements meet - Otherworldly Gate: A door to unknown realms - Rainy Garden: A fresh garden washed by the rain Complete your spirit collection while listening to 40Hz BGM.
One Left
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One Left brings the timeless Peg Solitaire puzzle to your iPhone, iPad, and Mac with a beautiful modern design. THE CHALLENGE Start with 32 pegs and one empty space. Jump pegs over each other to eliminate them. Your goal: leave just ONE peg remaining - ideally in the center! FEATURES • Clean, intuitive interface designed for all ages • Universal app - play on iPhone, iPad, and Mac • Multiple color themes to personalize your board • Global leaderboard - compete for the fastest times • Helpful hints when you get stuck • Interactive tutorial for beginners • Track your statistics and improve your strategy • Haptic feedback for satisfying gameplay (iOS) • No ads interrupting your game PERFECT FOR • Puzzle lovers seeking a mental challenge • Quick brain training sessions • Relaxing gameplay without time pressure • Players who enjoy classic board games The Peg Solitaire puzzle has been enjoyed for centuries. Now experience it reimagined for the modern era. Can you solve it with just ONE LEFT?
Screenshots
Verdict
The clearest difference is ads: One Left at none against Idle Spirits's shown. Idle Spirits's advantage is iOS requirement (15.0 vs 17.6). On price, update cadence, in-app purchases and device support 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 5 weeks, One Left monthly. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.
| Parameter | Idle Spirits | One Left |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 weeks | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 101 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | KeiK LLC | Alexandre Brotto Rangel da Silva |
In-app purchases
Idle Spirits
No in-app purchases
One Left
No in-app purchases









