Comparison

ZenSee vs Soln

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ZenSee

Features
Read full description

In today's fast-paced world, finding inner peace is precious. This app is designed for anyone focused on mental wellness, meditation, and Zen practice. Whether you're a mindfulness beginner or an experienced practitioner, you'll find the perfect tools and companionship here. [Key Features] • Meditation Timer: An intuitive, dedicated timer featuring soothing singing bowl sounds to help you achieve deep focus and relaxation. • Practice Tracking: Log your meditation sessions and insights. Witness your personal growth on the path of mindfulness. • Versatile Modes: Tailored for various scenarios including mindful breathing, deep meditation, and sleep relaxation to meet your needs at different stages. • Focused Zen Space: A minimalist, distraction-free interface that creates an immersive digital sanctuary for your mind. [Who is this for] • Anyone looking to relieve anxiety and stress through meditation. • Students and professionals aiming to improve focus and sleep quality. • Spiritual seekers diving deep into Zen, mindfulness, and self-awareness. Download now. Take a few minutes each day to connect with yourself, discover clarity through meditation, and embrace the peace and joy of your spiritual practice.

About

Soln

Features
Read full description

Soln is a sleep engine built on cognitive load theory. Different from other sleep apps Most sleep apps are just players — they start audio and leave you to it. Soln calculates how hard it will be to fall asleep tonight, decides which layer to start at and how long to stay there, then stops when you're out. You don't have to manage anything. Five audio layers Ā· Silent preparation — nothing playing, just space for your mind to settle Ā· Minimal white noise — a steady background to mask outside noise Ā· Heart rate-synced white noise — audio tempo follows your heart rate; as it slows, so does the sound Ā· Tonal fade — frequency gradually drops, sliding your brain from alert to relaxed Ā· Semantic drift — soft, loosely connected speech that gives your mind something to dissolve into instead of looping the same thought (paid) How long you spend on each layer isn't fixed — it depends on how you're doing tonight. Apple Watch auto-stop When you fall asleep, Apple Watch detects it. Soln fades the audio out over two seconds, then stops. No timer to set. No sudden silence to wake you (paid). Nightly assessment Before bed, based on today's mood and last night's sleep, Soln estimates how hard it'll be to fall asleep and gives you an optimal bedtime window and expected sleep onset time. In the morning, three scores: reaction, memory, and mood. Sleep well, score well. Sleep poorly, score reflects that. Straightforward. Full sleep history A three-color ring for each night. Long-press any day for that night's detail and sleep-onset timeline. One-time purchase Free for 7 days, full features included. After that, a one-time purchase permanently unlocks everything. Tied to your Apple ID — restore on any new device. No ongoing charges.

Screenshots

ZenSee4 screens
Soln4 screens

Verdict

The call

The clearest difference is in-app purchases: ZenSee at none against Soln's 1. Soln's advantage is device support (3 vs 1). On price, update cadence, ads and iOS requirement there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Soln sells 1 one-off in-app purchase. ZenSee asks for nothing beyond the download.

UpkeepUpdate frequency

ZenSee ships an update every 9 days, Soln every 3 weeks. The most recent releases landed on September 21, 2026 and September 9, 2026 respectively.

Scorecard2 real differences Ā· 4 level
ZenSee versus Soln: the parameters behind the verdict, then further details
ParameterZenSeeSoln
PriceFreeFree
Update frequencyEvery 9 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size22 MB3 MB
Age rating4+4+
Developer宇 占Nan Yu

In-app purchases

None

ZenSee

No in-app purchases

1 purchases

Soln

One-time1
  • Unlock Soln$5.99

Questions

Is ZenSee free?
ZenSee is free to download, with no in-app purchases.
Is Soln free?
Soln is free to download, with in-app purchases available.
Do ZenSee or Soln have ads?
Neither ZenSee nor Soln shows ads.
Which is updated more often, ZenSee or Soln?
ZenSee ships an update every 9 days, and Soln every 3 weeks. Most recently, ZenSee was updated on September 21, 2026 and Soln on September 9, 2026.

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