Comparison

Rhythm Lighting vs Lumen Grimoire

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

Head to head
About

Rhythm Lighting

Features
Read full description

PERFORMANCE LIGHTING Light shapes how you show up. Clear mornings. Steady energy through the day. Sharper focus when it matters. Easier wind-down at night. Deeper, more consistent sleep. Rhythm brings your environment into alignment with your natural rhythm—so your body and mind perform the way they’re supposed to. Wake better. Work better. Recover better. Compatible with Philips Hue, Rhythm Server, and Home Assistant. Learn more: https://rhythm.lighting

About

Lumen Grimoire

This app offers a unique year-long illuminated journal experience. Each day, write a reflection and receive a custom-matched Companion card from a deck of 366 original designs. Your reflections and collected Companions form a personal, unshared manuscript.

Highlights
  • Year-long illuminated journal
  • Daily reflection entries
  • 366 original Companion cards
  • AI-powered literary narratives
  • On-device data storage
  • Premium subscription for expanded features
Features
Read full description

Have you ever wanted to write your year as a book — your own story, in your own hand, paired with Companions no one else owns? Lumen Grimoire is your year-long illuminated journal. Each day you write a reflection — what you're carrying, what you noticed, what kept you up — and the app brings forward a Companion from a deck of 366 original cards, matched to what you wrote. Across the year you collect them all. Across the year, you author your own book. This is not a notes app. This is not a generic journal where entries pile up unread. Lumen Grimoire pairs your thoughts with meaning. Each Companion has its own archetype, mood, and place in the year. Each reflection becomes part of your codex — a personal manuscript no other user will ever have. THE COMPANIONS 366 original cards, designed and created specifically for this app and nothing else — plus a special tribute card unique to the deck. Each one its own thing — an animal, a place, a moment of human experience — drawn with the richness of an illuminated manuscript. Four rarity tiers: Common, Uncommon, Rare, Legendary. Real-time animated reveals powered by Apple's Metal framework bring every Companion forward with cinematic motion. Premium subscribers receive new Companions added to the deck each year — your codex keeps growing. A DAILY PRACTICE The first reflection of each day brings forward a new Companion, matched to what you wrote — never random. Write what you carried into the morning. Write what you noticed on the walk home. Write what kept you up. Tomorrow brings the next. Across a year, the year writes itself in your hand. PYTHIA — YOUR LITERARY REFLECTION COMPANION (PREMIUM) Pythia is an optional AI presence that weaves your reflections into something lasting: - Stories — a brief literary narrative about the Companion that emerged from your entry, frozen on save - Lenses — Pythia's Deeper or Wider perspective on any entry, an additional turn of light - Chapters — once a week, Pythia composes the prose of your past seven days into a chapter of your story. Your week, written as literature. - Whispers — a brief note linking your current entry to a past moment or Companion - Patterns — what Pythia notices about you, surfacing over time YOUR CODEX, IN TWO HANDS - My Story — Pythia's woven narratives, frozen on save, organized chronologically - My Book — your full reflection grimoire, organized by date and Companion Everything stays on your device. No cloud sync in v1.0. No accounts. No login. No email. No tracking. No advertising. Quiet by design. PRIVACY Reflections are stored on your device only. Optional AI features send only the context needed to a secure proxy, and your data is never used to train AI models. Full details in Privacy Policy. SUBSCRIPTION DETAILS Lumen Grimoire is free to use. The free tier includes unlimited journal reflections, 1 Companion per week (Common and Uncommon rarities), and 1 daily Lens. Premium unlocks 1 Companion per day across all rarities, Pythia's Stories on every Companion, Deeper and Wider Lenses, weekly Chapters, Whispers, Patterns, up to 20 Pythia interactions per day, and new Companions added to the deck each year as the codex grows. Current pricing is shown in-app at the point of purchase. The Annual tier includes a 7-day free trial, the Weekly tier includes a 3-day free trial for new subscribers. Payment is charged to your Apple Account at confirmation. Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period. Manage subscriptions in your Apple Account Settings. Privacy Policy: https://poised-plier-5c6.notion.site/Lumen-Grimoire-Privacy-Policy-33ad1b9444c38177925ee8eaecbacae7 Terms of Service (EULA): https://poised-plier-5c6.notion.site/Lumen-Grimoire-Terms-of-Service-33ad1b9444c381fab2b1cf87e2cc77e5

Screenshots

Rhythm Lighting4 screens
Lumen Grimoire4 screens

Verdict

The call

The clearest difference is in-app purchases: Rhythm Lighting at none against Lumen Grimoire's 3. Rhythm Lighting also leads on ads (none vs shown) and device support (3 vs 1). On price and update cadence 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Lumen Grimoire sells 3 in-app purchases, starting at $2.99 per 7 days. Rhythm Lighting asks for nothing beyond the download.

UpkeepUpdate frequency

Rhythm Lighting ships an update every 2 weeks, Lumen Grimoire fortnightly. Both last shipped on November 9, 2026.

Scorecard4 real differences · 6 level
Rhythm Lighting versus Lumen Grimoire: the parameters behind the verdict, then further details
ParameterRhythm LightingLumen Grimoire
PriceFreeFree
Rating—4.8 (74 ratings) — better
Positive reviews—80.0% of reviews
Number of ratings—74 — better
Update frequencyEvery 2 weeks — betterFortnightly
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better17.6
Further details — not scored
Size37 MB1.4 GB
Age rating4+9+
DeveloperDT Concepts, LLCCristian Critelli

In-app purchases

None

Rhythm Lighting

No in-app purchases

3 purchases

Lumen Grimoire

Subscriptions3
  • Lumen Premium Weekly3 Days trial$2.997 Days
  • Lumen Premium Monthly$8.991 Month
  • Lumen Premium • Annual7 Days trial$44.991 Year

Questions

Is Rhythm Lighting free?
Rhythm Lighting is free to download, with no in-app purchases.
Is Lumen Grimoire free?
Lumen Grimoire is free to download, with in-app purchases available.
Do Rhythm Lighting or Lumen Grimoire have ads?
Lumen Grimoire shows ads; Rhythm Lighting does not.
Which is updated more often, Rhythm Lighting or Lumen Grimoire?
Rhythm Lighting ships an update every 2 weeks, and Lumen Grimoire fortnightly. Most recently, Rhythm Lighting was updated on November 9, 2026 and Lumen Grimoire on November 9, 2026.

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