# Duo Fold Counter — Count every fold & unfold

> Count every fold & unfold (iPhone/iPad app by Julian Christopher Siebert.)

- Source: https://appshunter.io/ios/app/duo-fold-counter/id6827677447 (this page in markdown: same URL + `.md`)
- Developer: [Julian Christopher Siebert](https://appshunter.io/developer/1830495244)
- Category: Utilities, Productivity
- Price: $0.99
- Age rating: 4+
- Requires: iOS 27.1 · 2 MB
- Languages: German (Germany), American English
- Released: 2026-10-31
- Data updated: 2026-11-01

## What is Duo Fold Counter?

How often do you really fold your phone? Duo Fold Counter counts every fold and unfold of your foldable iPhone, turns it into clear statistics and shows you how much of your hinge's estimated life you've already used.

COUNTS LIVE, CATCHES UP LATER
While the app is open, it reads the system hinge sensor and counts every fold and unfold in real time. Folded it while the app was closed? When you come back, Duo Fold Counter notices the change and records it as an "inferred" fold, so your history stays complete. You can also log folds manually at any time.

OPTIONAL: COUNT IN THE BACKGROUND
Want every fold counted, even with the app closed? Turn on "Count in background" in Settings. iOS only lets apps keep running in the background with location, so while this is on the app keeps location active – you'll always see the location indicator – and detects folds with the magnetometer: the halves of your phone contain magnets, and closing it brings one close to the compass sensor. Folds detected this way get a "sensor" badge in your history. It's off by default and uses some extra battery.

STATISTICS THAT TELL A STORY
• Folds per day and your total over time
• Time spent folded, half open and unfolded
• Opening angles: tent, laptop or flat
• How long your phone usually stays unfolded
• Time of day, weekdays and a weekday × hour heatmap
• Where you fold: a map of your fold spots and your top 3 places (optional)
• Full history of every recorded fold

QUESTIONS, ANSWERED
The Questions tab turns your data into plain-language insights:
• When do you fold the most?
• Is today busier than usual?
• Which weekday is your folding day?
• How long does it stay unfolded?
• Do you fold more on weekends?
• How long would the hinge last at this pace?
• Where do you fold the most?

ESTIMATED HINGE LIFETIME
Set the rated number of folds (75,000 by default, adjustable) and see what percentage you've used and roughly how long your hinge will last at your current pace.

WIDGETS
Keep your fold count and estimated lifetime on your Home Screen and Lock Screen.

PRIVATE BY DESIGN
No account, no tracking, no ads. All your data stays on your device. Location is only used if you turn on background counting or "Record fold locations" – fold locations are stored on your device, and only place names are looked up via Apple Maps.

MORE
• English and German
• Light and dark mode

REQUIREMENTS
Automatic counting requires a foldable iPhone with a hinge sensor. On other iPhones you can log folds manually and explore every statistic with sample data (Settings → Load sample data).

Get to know your fold habits — download Duo Fold Counter today.

## Chart rankings

- #101 in Top Paid (US App Store)
- #20 in Top Paid · Utilities (US App Store)

## Is Duo Fold Counter safe?

Not enough ratings yet to assess Duo Fold Counter.

## Is Duo Fold Counter legit?

Duo Fold Counter appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Duo Fold Counter is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-31

No release notes.

## More apps by Julian Christopher Siebert

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- [HomeFreeze for Homekit](https://appshunter.io/ios/app/homefreeze-for-homekit/id6759217068)
- [My little Pinneberg](https://appshunter.io/ios/app/my-little-pinneberg/id6759555314)
- [ZahlenBitte](https://appshunter.io/ios/app/zahlenbitte/id6760587443)
- [Ski Resort Finder](https://appshunter.io/ios/app/ski-resort-finder/id6760788575)

All apps by Julian Christopher Siebert: https://appshunter.io/developer/1830495244

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-01.*