A gym workout log that opens into your sets beside the session's totals and rest timer
Does RepCount work on iPhone Duo?
Yes, since version 10.11.0, and seen in iPhone Duo simulator captures: open, your workout totals and rest timer sit in a column beside your sets.
- Simulator verifiedSiper Apps AB, the developer, in a submission to FoldHunt on October 24, 2026, and on the RepCount iPhone Duo page, with unframed captures from the simulator. The App Store seller is Siper Apps AB. The developer says the Duo support shipped in version 10.11.0 on October 23, 2026; the release notes for 10.12.0 (released October 27, 2026) don't mention it.
Adapted for the fold
- Closed · Outer display
Log a set, closed
Closed, log sets, reps, weights and notes on the cover, with the controls in the bar down the side.
- Open · Inner display
Sets beside the session
Open, a companion column beside your exercises shows the workout time, volume, sets, reps and the rest timer.
- Open · Inner display
Progress and calendar side by side
Statistics open in two columns, an exercise list beside its chart, and your workout history sits beside the training calendar.
About RepCount
RepCount is a gym workout tracker from Siper Apps, a Swedish studio, on the App Store since 2013. Log sets, reps, weights and notes as you train, save routines, add your own exercises and look back at your training on a calendar. Logging, routines and custom exercises are free and unlimited, and it works offline; Premium adds detailed charts, personal records, supersets and drop sets.
Version 10.11.0 added iPhone Duo layouts. Closed, you log your sets on the cover. Open, a companion column puts the session’s time, volume, sets, reps and rest timer beside your exercises, statistics open in two columns, and the workout history sits beside the calendar. The developer’s captures from the simulator show each of these.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· Simulator screenshots reviewed
Simulator verified · iphone-duo
Checked the five unframed captures on the RepCount iPhone Duo page, with the Duo status ring and the bar down the side: the cover with a deadlift's sets; open, the same sets beside a column with the workout time, volume, sets, reps and a 1:30 rest timer; an exercise list beside a one-rep-max chart; a saved routine; and the workout log beside the October calendar.
Poses shown: Closed, Open. These are observations of the evidence, not a test of every interaction.
App version: 10.11.0. Environment: iPhone Duo simulator.
Still captures with no Xcode version; the half-folded and Split View layouts aren't shown. No build was tested.
View reviewed evidence ↗
Related guides
The best iPhone Duo apps so far (October 2026)
The apps worth installing now that iPhone Duo is on sale, from the apps Apple named as launch partners to indie apps whose developers have shown a real iPhone Duo layout, picked for what they do when you open the phone.
Do your apps work on iPhone Duo? What happens before they're updated
Every iPhone app opens on iPhone Duo, but only updated ones fill the inner display. What an app looks like before its developer adapts it, how to tell which are ready, and which popular apps have said so.
Is this your app?
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Sources: RepCount on iPhone Duo (repcountapp.com) · RepCount on the App Store (apps.apple.com)
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