Comparison

Standard Time Berlin vs Slappy Hands

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Standard Time Berlin

Read full description

Standard Time Berlin: A Digital Artwork by Mark Formanek Standard Time Berlin is a unique digital artwork that transforms the concept of time into a captivating experience. Originally realized in Berlin in 2007, the award-winning performance involved seventy workers building a wooden time display in real time for 24 hours, with 1611 changes—a race against the clock. This fascinating performance is seamlessly documented in a single-shot video. The app synchronizes this video with your device’s time, allowing you to experience the artwork in real-time. However, please note that access to the full experience, including the complete video and all associated features, requires an in-app purchase. In-App Purchase Required for Full Functionality: To unlock the entire video and fully immersive experience, users will need to make an additional purchase within the app. Every time you look at your watch, you will forget the time. Immerse yourself in this remarkable piece of digital art by Mark Formanek, realized by Datenstrudel in 2007.

About

Slappy Hands

This app translates wrist movements into escalating sound effects, starting realistic and progressing to absurd explosions. It offers instant response and visual feedback, designed for a continuous, engaging experience without menus or tracking.

Highlights
  • Motion-activated slap sounds
  • Escalating sound tiers
  • Instant response
  • Visual feedback on hits
  • Rage-shake detection
  • Works on either wrist
  • Launches from watch face
Features
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Slap the air. Your watch cracks back. Slappy Hands turns a flick of your wrist into a sound you can feel. Motion in, sound out — no menus, no setup, no waiting. That tight little loop is the whole point, and it's the reason people keep doing it long after the joke has landed. Then it escalates. The first slaps sound real. Keep going and they drift into cartoon, then absurd, then full explosions — a designed arc, not random noise — with rotating one-liners along the way. Tap the flame to skip straight to chaos. Built for feel: • Instant response — motion detection tuned by ear, not by spec sheet • Four sound tiers that escalate as you go, then reset so the arc can run again • No sound repeats back-to-back, so it stays alive the hundredth time • Keeps sounding even when the screen dims mid-session • Visual feedback timed to every hit: pulsing ring, color shift, flash • Rage-shake detection for when you really commit • Works on either wrist, arms itself when you raise it, sleeps when you don't • Launches straight from a watch face complication • Tap to see your slap count for the session No account. No ads. No tracking. Nothing leaves your watch. Just slap.

Screenshots

Standard Time Berlin4 screens

Verdict

The call

The clearest difference is in-app purchases: Slappy Hands at none against Standard Time Berlin's 2. Standard Time Berlin's advantage is update cadence (fortnightly vs monthly) and device support (5 vs 3). On price, ads and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Standard Time Berlin sells 2 one-off in-app purchases. Slappy Hands asks for nothing beyond the download.

UpkeepUpdate frequency

Standard Time Berlin ships an update fortnightly, Slappy Hands monthly. The most recent releases landed on October 7, 2026 and October 17, 2026 respectively.

Scorecard3 real differences · 6 level
Standard Time Berlin versus Slappy Hands: the parameters behind the verdict, then further details
ParameterStandard Time BerlinSlappy Hands
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, Mac, Apple TV, Apple Watch — betteriPhone, iPod, Apple Watch
Requires iOS16.115.0 — better
Further details — not scored
Size7 MB3 MB
Age rating4+9+
DeveloperdatenstrudelTom Pardee

In-app purchases

2 purchases

Standard Time Berlin

One-time2
  • Mobile$8.99
  • Srandard4K$22.99
None

Slappy Hands

No in-app purchases

Questions

Is Standard Time Berlin free?
Standard Time Berlin is free to download, with in-app purchases available.
Is Slappy Hands free?
Slappy Hands is free to download, with no in-app purchases.
Do Standard Time Berlin or Slappy Hands have ads?
Neither Standard Time Berlin nor Slappy Hands shows ads.
Which is updated more often, Standard Time Berlin or Slappy Hands?
Standard Time Berlin ships an update fortnightly, and Slappy Hands monthly. Most recently, Standard Time Berlin was updated on October 7, 2026 and Slappy Hands on October 17, 2026.

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