Lastgrain vs Existential Atlas
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Lastgrain
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Lastgrain is a life timer that shows the time you have lived and the time you have left based on your birth date and expected lifespan. It quietly visualizes the passage of your life through an hourglass and numerical displays. This app does not make predictions. It is not intended for medical diagnosis or statistical life expectancy forecasting. It simply displays the passage of time in a visible form based on the values you enter. Main features - Display elapsed time and remaining time - Show overall progress as a life timer - Toggle seconds on / off - Support Light / Dark / System theme - Home Screen widget support - Store input data locally on your device Rather than pushing you with notifications or flashy effects, Lastgrain is designed to offer a quiet experience of observing time through an hourglass and numbers. It is not primarily for time management or productivity, but for gently reconnecting you with your sense of time. Please note - Displayed values are calculated based on your input and your device’s current time - This app does not provide medical or statistical predictions - If you find it emotionally overwhelming, please discontinue use
Existential Atlas
Explore diverse human perspectives on life's biggest questions, from death and the afterlife to meaning and purpose. Compare religious, philosophical, and experiential answers side-by-side in plain language, with all claims drawn from real sources.
- Structured answers across five lenses
- Guided Journey for personal reflection
- In-app library of source texts
- Exploration of near-death experiences
- Comparison of religious and philosophical views
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Existential Atlas is a map of how humanity has answered its biggest questions — about death and the afterlife, meaning and purpose, suffering, the soul, and how to live. Ask anything: "What happens when we die?" "Will I see my loved ones again?" "Why do we suffer?" "What is a good life?" The Atlas gathers how the world's great traditions have answered — religion, philosophy, and the firsthand testimony of thousands of near-death experiences — and lays them side by side, in plain language, every claim drawn from a real source. It is not a chatbot and not a single point of view. It shows you the patterns across traditions and where they diverge, and lets you decide what they mean. Sources stay separated — a Quran verse and a near-death account are different kinds of evidence, and you always see which is which. WHAT YOU CAN DO • Ask any question and read a structured answer across five lenses: religion, philosophy, near-death & shared-death experience, spiritual traditions, and myth. • Take the Guided Journey — a handful of questions that quietly chart which perspectives you lean toward, building a reflection of your own thinking over time. • Read the source texts themselves in the in-app library: the Bible, Quran, Bhagavad Gita, Tao Te Ching, Dhammapada, the Stoics, the Upanishads, and dozens more. • Explore near-death experiences drawn from thousands of firsthand accounts. The traditions: Christianity, Islam, Sufism, Judaism, Hinduism, Buddhism, Zen, Jainism, Taoism, Confucianism, Stoicism — alongside philosophers from Plato to Hume, and the testimony of those who have stood at the edge of death and come back. The map, not the destination. Existential Atlas orients you through the landscape of human belief about life, death, and meaning. It never tells you where to end up.
Screenshots
Verdict
The clearest difference is in-app purchases: Existential Atlas at none against Lastgrain's 1. Existential Atlas also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price, update cadence and ads 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. Lastgrain sells 1 one-off in-app purchase. Existential Atlas asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 28, 2026 and October 13, 2026 respectively.
| Parameter | Lastgrain | Existential Atlas |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 2 MB |
| Age rating | 4+ | 12+ |
| Developer | Takafumi Kawano | RYAN JAMES SIEGEL |
In-app purchases
Lastgrain
- Lastgrain Plus$5.99
Existential Atlas
No in-app purchases









