Power vs When'd I
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Power
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The TECOM Smart Machines Monitor and Control System can be added on all installed machines, in any brands, and convert them into Industry 4.0 class with new-generation capabilities: 1. Connect to internet, either via Ethernet or wireless 4G/LTE. 2. Remote Monitor/Report of machine operation status via internet. 3. Connect to Smart Mobile Devices. Making monitor/report not only remote, but also mobile, anywhere. 4. Two-way, Interactive in Demand and Control operations between the upgraded machine and smart mobile devices. All remote monitoring is controlled by Private Clouds to protect operations privacy.
When'd I
This app helps you track when you last performed specific tasks or activities. It visualizes the time elapsed since your last action and allows you to add photos and notes to each entry. Features include widgets and lock screen access for quick logging and checking.
- Track last performed activities
- Visualize time elapsed
- Add photos and notes
- Home screen widgets
- Lock screen logging
- Optional evening nudge
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Stop managing to-dos. Just remember when you last did it. "When did I last wash the sheets?" "When did I change the water filter?" "When did I last call my parents?" Some things you can never remember. When'd I records just the date you did them. No goals, no nagging notifications, no checklists. Tap once and it's logged as today. โ See how long it's been Every item shows the days since you last did it. The longer it's been, the more it stands out. โ A timeline where distance means time The space between dots is the actual gap between dates. Busy stretches look dense. The months you skipped show up as empty space. โ Photos and notes Attach one photo and a short note to any record. โ Widgets and Lock Screen Check what's overdue from your Home Screen, and log without opening the app. You can even record straight from the Lock Screen. (iOS 16.4+) โ An optional evening nudge Once a day, if you want it. Off by default. โ Entirely on your device No account, no server, no ads. Your records stay on your phone. Export and import backup files yourself, and an automatic iCloud copy brings everything back if you switch phones or reinstall. โ Buy once One purchase unlocks everything. No in-app purchases, no subscriptions, no ads.
Screenshots
Verdict
The clearest difference is price: Power at Free against When'd I's $2.99. Power also leads on iOS requirement (10.0 vs 15.0). When'd I's advantage is update cadence (every 3 days vs every 4 months). On ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Power is free to download; When'd I costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Power ships an update every 4 months, When'd I every 3 days. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.
| Parameter | Power | When'd I |
|---|---|---|
| Price | Free โ better | $2.99 |
| Positive reviews | โ | 100.0% of reviews |
| Update frequency | Every 4 months | Every 3 days โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | โ | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod โ better |
| Requires iOS | 10.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 79 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | TECOM CO., LTD. | HyunWoo Lee |
In-app purchases
Power
No in-app purchases
When'd I
No in-app purchases









