ASTROTIMER vs CallAlert
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ASTROTIMER
Read full descriptionHide full description
ASTROTIMER turns your countdown into a cosmic experience. Set your timer, and watch as asteroids fill the starry sky — one for each minute. A glowing ball bounces between them, producing beautiful FM synthesis chimes with every collision. As each minute passes, a rock shatters into fragments, scattering across the screen. When time's up, a gentle chime melody lets you know. Features: Stunning real-time star chart background Physics-based ball and rock collisions FM synthesis chime sounds with delay and reverb Timer from 0:10 to 30:00 Remembers your last timer setting Works on iPhone and iPad
CallAlert
Read full descriptionHide full description
Use only for emergencies involving life or physical safety. Emergency alerts from loved ones, even while locked or in Silent or Focus mode. If you fall at home and cannot move, alert a nearby family member in an emergency. Track each device’s receipt and each person’s stop action separately. Notification and Critical Alerts permissions are required. QR pairing and internet are required. Behavior depends on device, OS and volume settings. Delivery is not guaranteed. Emergency SOS sending, receiving and stopping, all 11 sounds, volume settings and notification features are available on every plan. Free 1 SOS setting 3 paired recipients Plus 10 SOS settings 20 paired recipients Pro 30 SOS settings 50 paired recipients Each SOS can alert up to 20 recipients. Pairings count for both people. Saved settings and pairings remain usable for SOS after expiry or a plan change. Additions are unavailable while you exceed your current plan’s limits. Please link your accounts with Apple or Google before purchasing or restoring. This is an auto-renewing subscription. You will be charged for each period shown unless you cancel. You can cancel your subscription from the settings of the store where you purchased it. Terms of Use: https://call-alert.somedea.com/terms Privacy Policy: https://call-alert.somedea.com/privacy
Screenshots
Verdict
The clearest difference is ads: CallAlert at none against ASTROTIMER'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. ASTROTIMER sells 1 one-off in-app purchase and CallAlert sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | ASTROTIMER | CallAlert |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 6 MB | 83 MB |
| Age rating | 4+ | 4+ |
| Developer | Takashi Tsunoda | Somedea LLC |
In-app purchases
ASTROTIMER
- Remove Ads$0.99
CallAlert
- Plus Monthly$2.991 Month
- Pro Monthly$5.991 Month
- Plus Annual$29.991 Year
Show 1 moreShow fewer
- Pro Annual$59.991 Year









