Hidden Timer vs SPHERA Alarm
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Hidden Timer
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A timer app that allows user to hide the time while the timer is running.
SPHERA Alarm
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SPHERA Alarm is an alarm clock built around a spatial way to choose time. Instead of spinning a flat wheel, you touch a luminous sphere of time. Hours and minutes move together across a glassy, three-dimensional surface, making alarm setup feel deliberate, calm, and precise. Why SPHERA - Spatial sphere time picker for tactile alarm setup - Local-first alarm data, no account required - Clean dark interface designed for night and morning - Repeat rules, snooze, sounds, and labels - Themes and sound choices for a personal wake experience - Wake Check options for mornings when you need an extra step SPHERA is for people who want an alarm that feels less like a default utility and more like a focused instrument. Set the time. Feel the surface move. Wake with intention. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://sts.works/privacy
Screenshots
Verdict
The clearest difference is in-app purchases: Hidden Timer at none against SPHERA Alarm's 10. SPHERA Alarm's advantage is ads (none vs shown). On price, 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. SPHERA Alarm sells 10 in-app purchases, starting at $1.99 per month. Hidden Timer asks for nothing beyond the download.
| Parameter | Hidden Timer | SPHERA Alarm |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 weeks | — |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.8.3 | 15.0 — better |
| Further details — not scored | ||
| Size | 35 MB | 79 MB |
| Age rating | 4+ | 4+ |
| Developer | Hideaki Uchikoshi | Shin Onoshima |
In-app purchases
Hidden Timer
No in-app purchases
SPHERA Alarm
- SPHERA Plus Monthly1 Month trial$1.991 Month
- SPHERA Plus Yearly1 Month trial$14.991 Year
- Prism Wake$0.99
- Synapse Tone$0.99
- Zenith Pulse$0.99
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- Quiet Flux$0.99
- Solar Thread$0.99
- Velvet Radar$0.99
- Soft Circuit$0.99
- Stellar Mallet$0.99
Questions
Is Hidden Timer free?
Is SPHERA Alarm free?
Do Hidden Timer or SPHERA Alarm have ads?
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