Climate Timer vs Open 3AM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Climate Timer
Track critical climate change deadlines and lifelines, discover positive news, and manage personal actions. Customize your experience with background themes and home screen widgets.
- Climate change deadline countdown
- Renewable energy and land protection data
- Climate news updates
- Personal climate action planner
- Customizable background themes
- Home screen widget support
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This application displays information published on "ClimateClock.world" and manages climate change self-action. 1. DEADLINE Time left to limit global warming to 1.5℃. 2. LIFELINE • World's energy from renewables • Land protected by indigenous people • Loss & Damage owed by G20 nations • Loss & Damage owed by G7 nations • Green Climate Fund 3. News Good news about climate change. 4. My actions Set My Actions against climate change for housing, transportation, food, consumer goods, and leisure. 5. Background selection • Theme color • Specified color • Image (Switching display of global warming-related images at 1-minute intervals from the free material site "Pixabay.com") 6. Widget Can place DEADLINE widget on home screen The display content accesses "ClimateClock.world" every 24 hours and downloads the latest. The displayed contents are subject to change. The content is displayed according to the device language, but as of November 2022, it is only available in English and Portuguese. (Default language is English, news is always in English only)
Open 3AM
This app offers a private voice companion for sleepless nights. Simply start talking when your mind races, and it will stay with you without any sign-up or recording. Designed for adults, it provides a non-therapeutic space for those struggling to fall asleep.
- Private voice companion
- No sign-up required
- No recording
- Continuously available
- Adult-focused (18+)
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3AM is a free voice companion for the nights you can't sleep. When your brain won't stop, open 3AM and start talking. It picks up right where you left off, and stays with you — no sign-up, nothing recorded, completely private. Not therapy. For adults 18+. open3am.com
Screenshots
Verdict
The clearest difference is review sentiment: Open 3AM at 100% against Climate Timer's 50%. Open 3AM also leads on rating (5.0 vs 3.0) and update cadence (every 5 days vs every 11 months). On price, ratings volume, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Open 3AM holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 50% of Climate Timer's written reviews are positive against 100% of Open 3AM's.
Climate Timer ships an update every 11 months, Open 3AM every 5 days. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.
| Parameter | Climate Timer | Open 3AM |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 50.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 1 |
| Update frequency | Every 11 months | Every 5 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 30 MB | 5 MB |
| Age rating | 4+ | 17+ |
| Developer | MAKOTO SASAKI | Aniket Sharma |
Customer experience
Climate Timer
Open 3AM
In-app purchases
Climate Timer
No in-app purchases
Open 3AM
No in-app purchases
