Optiki Prime vs Circle timer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Optiki Prime
Read full descriptionHide full description
Optiki Prime offers new user experience to the earlier KiLax Optiki system. Use this app to set up your Optiki Prime system and manage mobile access freely. Optiki Prime series can be installed in any e-locking system. The unique no data connection to hardware locks to ensure hacking free security. Manage your timed access key to anyone as needed, either to a meeting, postbox or a rare visited warehouse.
Circle timer
Read full descriptionHide full description
This is a timer that lets you visually check the remaining time. The pie chart gradually disappears, and when it completely disappears an alarm will sound. The time can be set from 1 to 60 minutes You can measure the time exceeded by changing the settings. This can be useful for studying for exams, etc. Please give it a try.
Screenshots
Verdict
The clearest difference is price: Optiki Prime at Free against Circle timer's $0.99. Optiki Prime also leads on iOS requirement (12.0 vs 14.4). Circle timer's advantage is update cadence (every 4 days vs every 15 months). On ads, in-app purchases 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
Optiki Prime is free to download; Circle timer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Optiki Prime ships an update every 15 months, Circle timer every 4 days. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.
| Parameter | Optiki Prime | Circle timer |
|---|---|---|
| Price | Free — better | $0.99 |
| Update frequency | Every 15 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 14.4 |
| Further details — not scored | ||
| Size | 20 MB | 1 MB |
| Age rating | 17+ | 4+ |
| Developer | KiLax Limited | hideo nakamura |
In-app purchases
Optiki Prime
No in-app purchases
Circle timer
No in-app purchases
