ComBackups vs DualClock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ComBackups
Scan QR codes generated by an ETC combustion control system to retrieve backup commissioning data. The app stores and allows emailing of these backup files directly from your iPhone. Optionally, create spreadsheets of the data in your Google account.
- Scan QR codes for backup data
- Retrieve commissioning data files (CBU)
- Store and email backup files
- Create Google Sheets from data
- View backup files within the app
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The touch screen of an ETC combustion control system maintains a backup of the most recent commissioning data set. This can be displayed as a QR code by the system. This app allows the QR code to be scanned by an iphone and the backup file (CBU) to be retrieved. The CBU file is stored in the phone and can be viewed and emailed from within the app. Optionally, a spreadsheet can be created in the users Google account using 'Google Sheets'.
DualClock
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DualClock puts two time zones side by side on your Home Screen, Lock Screen, and Mac — so you always know the local time where it matters. Pick any two cities from around the world and DualClock keeps them updated at a glance. Perfect for staying in sync with family abroad, remote teammates, clients in other regions, or planning calls across time zones. FEATURES - Two clocks, any two time zones — choose from hundreds of cities - Clean, minimal dark design that fits any Home Screen - Small and medium widget sizes - 12-hour or 24-hour time - Optional city labels - Works on iPhone and Mac - No account, no tracking, no data collected Long-press the widget and tap Edit to choose your cities. That's it.
Screenshots
Verdict
The clearest difference is update cadence: DualClock at every 3 days against ComBackups's every 11 months. ComBackups's advantage is iOS requirement (13.0 vs 17.0). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ComBackups ships an update every 11 months, DualClock every 3 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | ComBackups | DualClock |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 11 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 25 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Energy Technology and Control Limited | manish bhujel |
In-app purchases
ComBackups
No in-app purchases
DualClock
No in-app purchases
Questions
Is ComBackups free?
Is DualClock free?
Do ComBackups or DualClock have ads?
Which is updated more often, ComBackups or DualClock?
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