Comparison

gravity clock vs WoolWallet

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

Head to head
About

gravity clock

Experience time's passage through a visually stunning clock that destroys and reconstructs its face. Numbers break off and fall, creating a dynamic and beautiful display of seconds ticking by.

Highlights
  • Realistic gravity/physics simulation
  • Digital and analog modes
  • Customizable gravity strength and direction
  • Night mode
  • Time speaking functionality
  • Customizable colors
Features
Read full description

Watching the time pass has never been so beautiful! Gravity Clock visualizes the passage of time by the permanent destruction and reconstruction of the clock-face. Every second the hand breaks numbers out of the dial and lets them drop to the floor where they get buried by the following numbers and eventually wither away to make room for the endless succession of time. Watch the video here: http://joerg.piringer.net/gravityclock Features: - realistic gravity/physics simulation, numbers fall as if they were real objects - digital and analog mode - control strength and direction of gravity with presets or customize them - night mode with reduced brightness - can speak the time every minute, every 5 minutes etc. - change colors with presets or customize them - universal app supports iPhone/iPod touch and iPad in all orientations, resolutions and window sizes - looks perfect in an iPhone/iPad-dock

About

WoolWallet

Keep track of your yarn stash with this digital organizer. Catalog your skeins, colors, and quantities to avoid buying duplicates and always know what you have on hand for your next crafting project.

Highlights
  • Digital yarn inventory
  • Track skeins, colors, and quantities
  • Avoid duplicate purchases
  • Organize crafting supplies
Features
Read full description

Calling all crafters! WoolWallet is the knitting and crochet companion for your stash, patterns, and works in progress. Log every skein with photos, dyer, weight, yardage, fiber content, and colorways. Track sock sets, minis, partials, and leftover grams. Archive what you’re not using, and find anything fast with search and filters. Point your camera at a yarn label and WoolWallet reads the details: name, weight, yardage, composition, and more. Checking a label outside of the home? See if it’s already in your stash before you buy, then add skeins or start a new entry. Save knit, crochet, and Tunisian patterns with yarn requirements, needles and hooks, techniques, and notions. Import PDFs from Files or the web, scan paper patterns, or fill the form from a photo. Read patterns in-app with remembered page and an optional keep-awake screen. Queue ideas, track WIPs, and celebrate finishes. Pair each color with yarn from your stash, keep project photos and notes, and use multiple named row counters—plus a history chart of your daily progress. When you finish, optionally deduct yarn so your stash stays honest. See which stashed yarns fit a pattern’s requirements, and which patterns a yarn could make. Star favorite pairings so starting the next project is one tap away. A dashboard that tells you what’s in the works, what’s queued, finished this month, stash by weight, and more—so you always know where things stand. Export a polished summary image for any yarn or project—perfect for Messages, Instagram, or showing off your latest FO. Built for knitters and crocheters who love their stash as much as their projects.

Screenshots

gravity clock4 screens
WoolWallet4 screens

Verdict

The call

The clearest difference is price: WoolWallet at Free against gravity clock's $0.99. WoolWallet also leads on rating (5.0 vs 4.8) and review sentiment (100% vs 89%). gravity clock's advantage is update cadence (every 2 months vs every 11 months) and ratings volume (18 vs 2). On 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

CostPrice · In-app purchases · Ads · Monetization

WoolWallet is free to download; gravity clock costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

WoolWallet holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: gravity clock has 18 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 89% of gravity clock's written reviews are positive against 100% of WoolWallet's.

UpkeepUpdate frequency

gravity clock ships an update every 2 months, WoolWallet every 11 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 3 level
gravity clock versus WoolWallet: the parameters behind the verdict, then further details
Parametergravity clockWoolWallet
Price$0.99Free — better
Rating4.8 (18 ratings)5.0 (2 ratings) — better
Positive reviews88.8% of reviews100.0% of reviews — better
Number of ratings18 — better2
Update frequencyEvery 2 months — betterEvery 11 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.3 — better17.2
Further details — not scored
Size6 MB29 MB
Age rating4+4+
Developerjoerg piringerLogan Werner

Customer experience

gravity clock

All ratings18 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews242 reviews
Positive88.8%
Neutral6.2%
Negative5.0%

WoolWallet

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

gravity clock

Reported bugs

2 issues
  • Crashes at midnight
  • Twitter integration not working

Requested features

5 requests
  • Add Arabic-Indic numerals
  • Restore alarm function
  • Implement 64-bit support for iOS 11
  • Add countdown timer
  • Allow setting clock as device screensaver

WoolWallet

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

gravity clock

No in-app purchases

None

WoolWallet

No in-app purchases

Questions

Is gravity clock free?
gravity clock costs $0.99, with no in-app purchases.
Is WoolWallet free?
WoolWallet is free to download, with no in-app purchases.
Which has better reviews, gravity clock or WoolWallet?
WoolWallet is rated higher. gravity clock averages 4.8 out of 5 from 18 ratings, while WoolWallet averages 5.0 from 2 ratings.
Do gravity clock or WoolWallet have ads?
Neither gravity clock nor WoolWallet shows ads.
Which is updated more often, gravity clock or WoolWallet?
gravity clock ships an update every 2 months, and WoolWallet every 11 months. Most recently, gravity clock was updated on October 29, 2026 and WoolWallet on October 24, 2026.

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