SolarTrack vs One Last Second
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SolarTrack
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【SolarTrack】 is a visual solar tracking tool that helps you know where the sun is within seconds — ideal for photographers, outdoor enthusiasts, and anyone who wants to understand daily sunlight changes. Real-Time Solar Arc View the sun's current position on an intuitive horizon arc. Drag the timeline to preview sunrise, solar noon, sunset, and every moment in between throughout the day. Golden Hour & Twilight Alerts Get notified before golden hour, blue hour, and twilight transitions. Plan your shoots or outdoor activities with confidence, knowing the perfect light is on its way. Global Location Support Track solar data for any city on Earth. Search locations with built-in maps, save favorites, or use GPS to get instant results for your current position. Astronomical Calendar Browse monthly solar events including equinoxes and solstices. Tap any date to see sunrise, sunset, and daylight duration details for that day. Detailed Solar Data Access precise azimuth, elevation, declination, equation of time, and solar distance readings — all calculated locally on your device with no internet required. Understand the sun's rhythm, plan your day with light, and never miss a perfect moment. Pricing and Terms $4.99/week* $39.99/year* *Prices shown are in US dollars. Actual charges may be converted to your local currency based on your country or region. Payment will be charged to your iTunes account upon confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period, and the renewal cost will be provided. Subscriptions may be managed by the user. Auto-renewal may be turned off by going to the user's Account Settings after purchase. Cancellation of the current subscription is not allowed during the active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://qiangmind.xyz/rizhaoyi/privacy.html
One Last Second
Capture a brief video each day to create a visual diary of your life. Once a day's clip is recorded, it's sealed forever, encouraging mindfulness of the present moment. Review your weekly memories and track your life's journey.
- Daily 3-second video capture
- Sealed memories, no edits
- Weekly video playback
- Life grid with week tracking
- Memento mori countdown
- Optional private sharing
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Your life has about 4,000 weeks. One Last Second is a daily practice for noticing them. The entire app is one constraint: capture one 3-second video each day. At midnight, it seals forever. No edits, no do-overs, no backfilling from your camera roll. That's not a missing feature - it's the whole point. When today is the only day you can capture, you start paying attention to it. THE PRACTICE Open the app, record a moment, done... under a minute a day. Every Sunday evening, watch a short film of the week you just lived. On the first of the month, watch the whole month. Anniversaries resurface with On This Day. And your life grid, one dot for every week of your life, slowly fills in, captured weeks glowing white among the rest. MEMENTO MORI The app is built in an old tradition: remember that you will die. Not morbidly - clearly. A live countdown to midnight. Your weeks, counted. Daily lines like "2,912 Sundays remaining." It sounds heavy. In practice, it's the opposite: it makes ordinary Tuesdays feel worth filming. NO SHAME FOR GAPS You'll miss days. That's part of it. Empty dots are part of your story. There are no streak-shame mechanics here, and the only failure is never showing up again. NO NOISE No AI. No ads. No algorithms. No strangers. Nothing to fill in: sign in with Apple in one tap, and your archive outlives your phone. If you want, invite your close friends and family into a private circle and share your one last seconds. ONE SUBSCRIPTION One Last Second is a subscription: $34.99 a year with a 7-day free trial, or $4.99 a month. No free tier, no lifetime plan, no ads. Everything is included: moments from 3 to 8 seconds, every alternate take kept in your Vault, a 48-hour grace window for missed days, weekly and monthly films, unlimited chapters and friends, export to Photos anytime, and cloud backup of every moment. Cancel anytime. Everything you've kept stays. A year from now, you'll have 365 days kept: about 18 minutes of ordinary life you'd otherwise have lost. Start with today - you don't get it back. --- One Last Second is an auto-renewable subscription. Annual: $34.99/year, with a 7-day free trial. Monthly: $4.99/month, no trial. Payment is charged to your Apple Account at confirmation of purchase, or when the free trial ends. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings. Prices shown in USD and may vary by region. Terms of Use: https://www.onelastsecond.com/terms-of-service Privacy Policy: https://www.onelastsecond.com/privacy-policy
Screenshots
Verdict
The clearest difference is ads: SolarTrack at none against One Last Second's shown. 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. SolarTrack sells 2 in-app purchases, starting at $4.99 per 7 days and One Last Second sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | SolarTrack | One Last Second |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.1 (11 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 11 — better |
| Update frequency | — | Daily |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 6 MB | 137 MB |
| Age rating | 4+ | 12+ |
| Developer | HONG KONG WOOKAKA PET PRODUCTS CO., LIMITED | ONE PT SIX LLC |
In-app purchases
SolarTrack
- Weekly Boost3 Days trial$4.997 Days
- Yearly Boost$39.991 Year
One Last Second
- One Last Second: Monthly$4.991 Month
- One Last Second: Annual7 Days trial$34.991 Year









