Life Battery vs Saigon MRT
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Life Battery
Visualize your remaining lifespan as a battery percentage. Set your birth date and estimated lifespan to see your remaining days. This app serves as a memento mori, encouraging you to value each day.
- Lifespan as battery percentage
- Home Screen widget
- Set birth date
- Set ideal lifespan
- Memento mori reminder
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See what percentage of your life remains, shown as a battery. Check it at a glance with the Home Screen widget. Just set your birth date and ideal lifespan to see the days you have left. Life Battery reminds you that life is finite, and that today matters. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Saigon MRT
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Ứng dụng tìm kiếm lộ trình giữa các tuyến Metro Thành phố Hồ Chí Minh trên quy hoạch
Screenshots
Verdict
The clearest difference is in-app purchases: Saigon MRT at none against Life Battery's 3. Saigon MRT also leads on ads (none vs shown) and iOS requirement (15 vs 18.0). Life Battery's advantage is update cadence (every 4 days vs monthly). On price 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. Life Battery sells 3 in-app purchases, starting at $1.99 per month. Saigon MRT asks for nothing beyond the download.
Life Battery ships an update every 4 days, Saigon MRT monthly. The most recent releases landed on November 12, 2026 and November 8, 2026 respectively.
| Parameter | Life Battery | Saigon MRT |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (4 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | — |
| Update frequency | Every 4 days — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15 — better |
| Further details — not scored | ||
| Size | 46 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Ren Usuda | Duy Tan Nguyen |
In-app purchases
Life Battery
- Premium Monthly$1.991 Month
- Premium$5.99
- Premium (Supporter)$14.99
Saigon MRT
No in-app purchases
